Centre for Advanced Materials
Sustainable Development Goals (SDGs)
Chairman & Members
Chairman:
Ir. Dr Ng Chui Kim
Members:
Ts. Dr Ho Mui Yen
Ts. Dr Chew Khoon Hee
Ts. Ong Thai Kiat
Ts. Dr Chan Ming Yeng
Dr Tan Kang Huai
Dr Lee Yap Chen
Dr Ng Yong Sing
Dr Intan Fatihah Binti Ahmad
Dr Ho Shuh Huey
Dr Mohammad Khairul Azmi Bin Mohd Kassim
Objectives
To foster and facilitate research and development (R&D) activities in advanced materials.
Vision Statement
To be a globally recognized centre of excellence in research and development of advanced materials that can be beneficial to our country’s economy and infrastructure.
Rationale and Research Plan
The centre will conduct research and develop applications with commercial potential in the following areas:
Advanced ceramics (bioceramics, electroceramics)
Nanomaterials
Corrosion resistant coating
Polymeric composites
Quantum dot-sensitized solar cells
Semiconductor packaging
Geopolymer
Bioscience
Welding materials
Powder metallurgy
Operations and Activities
Our research team is presently involved in the development of advanced ceramics with applications in biomedical and high-temperature fields. Furthermore, we are exploring energy materials suitable for fuel cells and ultracapacitors, as well as nanomaterials that have potential uses in coatings, sensing technologies, solar cells, and advancements in biomedicine. We have achieved successful synthesis of diverse types of advanced materials, including bioceramics, graphene-based materials, conducting polymers, and nanostructured metal oxides. These accomplishments have been made feasible through the adoption of cost-effective synthesis and fabrication techniques, including 3D printing, ball milling, hydrothermal processes, ultrasonication, sonochemical techniques, electrochemical methods, microwave heating, and polycondensation.
Funding/Research Activities
Principal Investigator: Ir. Dr. Ng Chui Kim
Faculty: Faculty of Engineering and Technology (FOET)
Type of Grant: Fundamental Research Grant Scheme (FRGS)
Project Title: Evaluating the Compatibility and Interaction Mechanism of Biowaste-Derived Hydroxyapatite Composites as Feedstock for Material Extrusion-Based 3D Printing
Duration: 01.08.2024 - 31.07.2026 (2 years)
Approved Budget: RM 84,615.00
Principal Investigator: Dr. Chan Ming Yeng
Faculty: Faculty of Engineering and Technology (FOET)
Type of Grant: TAR UMT Internal Research Grant
Project Title: Fabrication of Recycled Polymer Composite Filament from Post-Consumer Plastic and Utensil for Fused Deposition Modeling
Duration: 01.03.2023 - 28.02.2025 (2 years)
Approved Budget: RM 118,475.00
Principal Investigator: Dr Ng Chui Kim
Faculty: Faculty of Engineering and Technology (FOET)
Type of Grant: TAR UMT internal grant
Project Title: Synthesis and Sintering of Biowaste-derived Hydroxyapatite
Duration: 1.8.2021- 31.7.2023 (2 years)
Approved Budget: RM91,800.00
Principal Investigator: Dr Chew Khoon Hee
Faculty: Faculty of Engineering and Technology (FOET)
Type of Grant: Industrial grant –Top Glove International Sdn. Bhd.
Project Title: Renewable Filler as Glove Reinforcing Agent
Duration: 1.11.2020- 31.07.2023 (2 year 8 months)
Approved Budget: RM 88,472.00
Principal investigator: Dr Ho Mui Yen
Faculty: Faculty of Engineering and Technology (FOET)
Type of Grant: TAR UMT internal grant
Project Title: Graphene Based Ternary Electrode for Non-Enzymatic Glucose Sensing Applications
Duration: 01.04.2018 - 31.03.2020 (2 years)
Approved Budget: RM 73,600.00
Postgraduate Supervision
Master of Engineering Science (TAR UMT)
Student Name: Teoh Min Wei
Title: Synthesis and Sintering of Biowaste-Derived Hydroyapatite
Supervision: Dr. Ng Chui Kim (Main)
Status: In progress
Student Name: Kannan A/L Velo
Title: Renewable Filler as Glove Reinforcing Agent
Supervision: Dr. Chew Khoon Hee (Main)
Status: In progress
Student Name: Leong Khok Lun
Title: Graphene Based Ternary Electrode for Nonenzymatic Glucose Sensing Application
Supervision: Dr. Ho Mui Yen (Main)
Status: Completed
Publication on Environmental Sustainability:
TITLE: Synthesis and Characterization of Chicken Bone-Derived Hydroxyapatite Incorporating Pectin
SOURCE: Chemical Engineering & Technology
AUTHOR: NG CHUI KIM (Main Author) RESEARCH CENTRE: CAM
SDG: 3,12,9
ABSTRACT: Hydroxyapatite (HA) was synthesized from chicken bone waste by calcination. Pectin was extracted from orange peels by microwave irradiation, and 1 and 3 wt % of pectin was incorporated into the HA. The resulting powders were then pressed into disk samples before being sintered at temperatures of 1050, 1150, and 1250 °C for 2 h. Various analytical techniques, including Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, density measurement, and Vickers microhardness tests, were used to evaluate the characteristics and mechanical properties of the samples. The incorporation of pectin did not interfere with the pure phases of HA, and minimal amounts of β-tricalcium phosphate were detected in the XRD patterns. Both ball milling and the addition of pectin effectively reduced the particle size of HA. However, the addition of pectin above 1 wt % did not contribute significantly to the densification and hardness of chicken bone-derived HA (CHA) compared with ball-milled CHA. Samples sintered at 1050 °C had the lowest relative density, owing to incomplete particle fusion. Increasing the sintering temperature resulted in a maximum relative density of ca. 95 % and a Vickers microhardness of 4.12 GPa for ball-milled CHA samples sintered at 1250 °C. Sintering temperature and ball milling were observed to play a more significant role in the densification and hardness of CHA compared with the addition of pectin.
SDG:
TITLE: Characterization and Sintering Properties of Hydroxyapatite Bioceramics Synthesized From Clamshell Biowaste
SOURCE: IIUM Engineering Journal
AUTHOR: NG CHUI KIM (Main Author)
RESEARCH CENTRE: CAM
SDG: 3,12,9
CITATION: Ng, C. K., Lee, S. K. Y., Tan, C. H., Singh, R., Ting, C. H. ., Chuah, Y. D., Tan, C. Y. ., & SUTHARSINI, . U. (2022). Characterization and Sintering Properties of Hydroxyapatite Bioceramics Synthesized From Clamshell Biowaste. IIUM Engineering Journal, 23(2), 228–236. https://doi.org/10.31436/iiumej.v23i2.2143
ABSTRACT: Hydroxyapatite (HA) is a type of calcium phosphate-based bioactive ceramic that resembles the mineral phase of bone and teeth with great potential for bone substitution and biomedical implants. Biogenic-derived HA emerges as a cheap and eco-sustainable alternative to improve waste utilization. However, hydroxyapatite has limited applications due to its apparent brittleness, thus prompting investigation for enhanced sintering properties. In the present study, the combination of calcination and chemical precipitation technique was used to extract hydroxyapatite (HA) from ark clamshells (Anadara granosa). The method successfully produced HA powder with a Ca/P ratio of 1.6 and characteristic bands corresponded to pure HA via Fourier Transform Infrared Spectroscopy (FTIR). The synthesized HA powder was then sintered at temperatures ranging from 1200 °C to 1300 °C, followed by mechanical evaluation of the density, Vickers hardness, fracture toughness and grain size. It was revealed that the samples sintered at 1250 °C achieved a relative density of ~88%, Vickers hardness of 5.01 ± 0.39 GPa, fracture toughness of 0.88 ± 0.07 MPa.m1/2 and average grain size of ~3.7 µm. Overall, the results suggest that ark clamshell synthesized HA (ACS) had the potential to be used as functional bioceramics for biomedical applications.
SDG:
TITLE: Synthesis of Graphene / Silver/ Molybdenum Disulphide Composite for Supercapacitor Application
SOURCE: Materials Science Forum
AUTHOR: HO MUI YEN (Main Author)
RESEARCH CENTRE: CAM
SDG: 7,9
CITATION: Yao, G. T. S., Yen, H. M., Lun, L. K., Wei, O., & Xiang, L. J. (2022). Synthesis of Graphene/Silver/Molybdenum Disulphide Composite for Supercapacitor Application. In Materials Science Forum (Vol. 1054, pp. 21–30). Trans Tech Publications, Ltd. https://doi.org/10.4028/p-u48e5d
ABSTRACT: In this study, pristine graphene/silver/molybdenum disulphide (G/Ag/MoS2) and reduced graphene oxide/silver/molybdenum disulphide (rGO/Ag/MoS2) composites materials were prepared via green solvothermal synthesis method and evaluated as supercapacitor electrodes. The morphology and structure of composites were examined by using Scanning Electron Microscopy (SEM), Energy dispersive spectroscopy (EDX), X-ray diffraction spectroscopy (XRD), and Raman spectroscopy. SEM and TEM indicate successful reduction of silver nitrate (AgNO3) to spherical Ag nanoparticles (NPs) by sodium citrate. The Ag NPs were observed to be evenly deposited on sheets of rGO and MoS2. From the XPS analysis, the spherical Ag NPs exist in zero-valent state, reflecting successful reduction. Based on cyclic voltammetry (CV) performed under 50 mV/s scan rate, G/Ag/MoS2 ternary composite exhibits the highest specific capacitance of 56.38 F/g which is 31 % and 29 % enhancement in specific capacitance of rGO/Ag/MoS2 ternary composite and Ag/MoS2 binary composite, respectively. It is believed that the presence of graphene may provide conductive pathway and a larger surface area for the distribution of Ag NPs.
SDG:
Others Publication:
Journal
Ting, C.H., Ting, M.L., Chin, K.L., Yew, M.C., Jun, H.K., Liang, M.S., Ng, C.K. and Ramesh, S., 2023. Fabrication of hydrothermal ageing resistant of 3 mol% yttria‐stabilised tetragonal zirconia polycrystalline via microwave sintering. Materials Science and Engineering Technology, 54(10), pp.1232-1239. DOI: https://doi.org/10.1002/mawe.202200152
Lee, Y.K., Liew, C.P., Kiew, P.L., Foo, B.C.Y., Yeoh, W.M. and Ho, M.Y., 2023. Orange Peel-Derived Activated Carbon as a Potential Electrode Material for Supercapacitor Application. Chemical Engineering Transactions, 106, pp.1285-1290. DOI: https://doi.org/10.3303/CET23106215
Ong, H.R., Iskandar, W.M.E., Chong, J., Khan, M.M.R., Ong, T.K. and Chua, B.K., 2023. Investigation on Silane Concentration of SiO2 Nanoparticle: FTIR Analysis. Chemical Engineering Transactions, 106, pp.1345-1350. DOI: https://doi.org/10.3303/CET23106225
Yap, L.K., Chun, K.S., Yeng, C.M., Ong, T.K.., Huey, H.S., Hunt, T.C. and Meng, P.M., 2024. Effects of corn husk fiber as filler in recycled single‐use polypropylene for fused filament fabrication. Journal of Vinyl and Additive Technology, 30(2), pp.620-634. DOI: https://doi.org/10.1002/vnl.22074
Rahman, N.F.A., Abd Rahman, H., Yusop, U.A. and Tan, K.H., 2023. An Approach to the Development of LSCF/YSZ-SDCC Dual Composite Cathodes for Intermediate Temperature SOFCs. Journal of Advanced Research in Applied Mechanics, 108(1), pp.98-110. DOI: https://doi.org/10.37934/aram.108.1.98110
Azami, M.S., Fatihh, A.R., Nordin, A.H., Tan, K.H., Jamluddin, N., Izzudin, N.M. and Azmi, A.A., 2023. Effect of Transition Metal/Graphitic Carbon Nitride for Photoreduction of Hexavalent Chromium. Malaysian Journal of Catalysis, 7(2), pp.54-58. DOI: https://doi.org/10.11113/mjcat.v7n2.176
Teoh, M.W., Ng, C.K., Lee, K.Y.S., Singh, R., Ting, C.H., Chuah, Y.D., Lim, Y.I., Tan, C.Y. and Yeo, W.H., 2023. Synthesis and Characterization of Chicken Bone‐Derived Hydroxyapatite Incorporating Pectin. Chemical Engineering & Technology. https://doi.org/10.1002/ceat.202300019
Lim, I.Y., Ting, C.H., Ng, C.K., Tey, J.Y., Yeo, W.H., Ramesh, S., Lee, K.S., Chuah, Y.D. and Teng, W.D., 2023. 3D printing of high solid loading zirconia feedstock via screw-based material extrusion. Ceramics International. 49 (15), 24852-24860. https://doi.org/10.1016/j.ceramint.2023.05.011
Ng, C.K., Lee, S.K.Y., Tan, C.H., Singh, Ramesh., Ting, C.H., Chuah, Y.D., Tan, C.Y. and Sutharsini, U., 2022. Characterization and Sintering Properties of Hydroxyapatite Bioceramics Synthesized from Clamshell Biowaste. IIUM Engineering Journal, 23(2), pp.228-236. https://doi.org/10.31436/iiumej.v23i2.2143
U Sutharsini, U., Thanihaichelvan, M., Ramesh, S. and Ng, C.K., 2020. Surface yttria content and hydrothermal ageing behaviour of two step sintered 3Y-TZP ceramics. 49 (2): 219-225. http://dx.doi.org/10.4038/jnsfsr.v49i2.10029
Ting, M.L., Chin, K.L., Jun, H.K., Ting, C.H., Ng, C.K. and Ramesh, S., 2020. The Influence of Manganese Oxide on the Densification and Mechanical Properties of 3Y-TZP Ceramics. Applied Science and Engineering Progress, 13(3), pp.268-273. https://doi.org/10.14416/j.asep.2020.04.002
Ng, C.K., Ng, Z.L., Ramesh, S., Tan, C.Y., Ting, C.H., Chuah, Y.D. and Sutharsini, U., 2020. Synthesis and properties of bio‐waste‐based hydroxyapatite via hydrothermal process. Materialwissenschaft und Werkstofftechnik, 51(6), pp.706-712. https://doi.org/10.1002/mawe.202000010
Ng, C.K., Ramesh, S., Tan, C.Y., Muchtar, A. and Somalu, M.R., 2016. Microwave sintering of ceria-doped scandia stabilized zirconia as electrolyte for solid oxide fuel cell. International Journal of Hydrogen Energy, 41(32), pp.14184-14190. https://doi.org/10.1016/j.ijhydene.2016.06.146
Ng, C.K., Ramesh, S., Tan, C.Y., Ching, C.Y., Lwin, N. and Muchtar, A., 2016. Effect of manganese oxide on the densification and properties of ceria-doped scandia stabilized zirconia. Journal of Ceramic Processing Research, 17(5), pp.443-447. https://doi.org/10.36410/jcpr.2016.17.5.44
Chong, F.D., Tan, C.Y., Singh, R., Muchtar, A., Somalu, M.R., Ng, C.K., Yap, B.K., Teh, Y.C. and Tan, Y.M., 2016. Effect of manganese oxide on the sinterability of 8 mol% yttria-stabilized zirconia. Materials Characterization, 120, pp.331-336. https://doi.org/10.1016/j.matchar.2016.09.001
Ng, G.T. and Ng, C.K., 2014. Development of Natural Bio-Plantation Waste as Pulp for Paper Making. Advanced Materials Research, 1043, pp.209-213. https://doi.org/10.4028/www.scientific.net/AMR.1043.209
Ng, C.K., Yeo, P.K. and Fam, C.M., 2014. Reclamation of Sodium Silicate Sand Moulding. Australian Journal of Basic and Applied Sciences, 8(19), pp.365-368. http://www.ajbasweb.com/old/ajbas/2014/Special%2012/365-368.pdf
S. Ng, P. L. Kiew, M. K. Lam, W. M. Yeoh & M. Y. Ho. Preliminary evaluation of the properties and biodegradability of glycerol-and sorbitol-plasticized potato-based bioplastics. International Journal of Environmental Science and Technology. 2022. https://doi.org/10.1007/s13762-021-03213-5
Shei Li Chung, Maxine Swee-Li Yee, Ling-Wei Hii, Wei-Meng Lim, Mui Yen Ho, Poi Sim Khiew, Chee-Onn Leong. Advances in Nanomaterials Used in Co-Delivery of siRNA and Small Molecule Drugs for Cancer Treatment. Nanomaterials. 2021. https://doi.org/10.3390/nano11102467
Rowen Lim, Peck Loo Kiew, Man Kee Lam, Wei Ming Yeoh, Mui Yen Ho. Corn starch/PVA bioplastics – The Properties and biodegradability study using Chlorella vulgaris cultivation. Asia-Pacific Journal of Chemical Engineering. 2021. https://doi.org/10.1002/apj.2622
Khok Lun Leong, Mui Yen Ho, Xiau Yeen Lee, and Maxine Swee-Li Yee . A Review on the Development of Non-Enzymatic Glucose Sensors based on Graphene-Based Nanocomposites. Nano, 2020. https://doi.org/10.1142/S1793292020300042
Ho Mui Yen, Luther Chong Yuong Oai, Khiew Poi Sim. Graphene-based Coating for Corrosion Application. International Journal of Recent Technology and Engineering. 2019. https://www.ijitee.org/wp-content/uploads/papers/v8i6s4/F10760486S419.pdf
Ho Mui Yen, Jim Lim Hui Kern, Khiew Poi Sim, Chiu Wee Siong. A Green Synthesis of Graphene Based Composite for Energy Storage Application. International Journal of Innovative Technology and Exploring Engineering. 2019. https://www.ijitee.org/wp-content/uploads/papers/v8i6s4/F10790486S419.pdf
Ho, M.Y., Khiew, P.S., Isa, D., Chiu, W.S. and Chia, C.H., 2017. Solvothermal synthesis of molybdenum oxide on liquid-phase exfoliated graphene composite electrodes for aqueous supercapacitor application. Journal of Materials Science: Materials in Electronics, 28, pp.6907-6918. https://DOI:10.1007/s10854-017-6391-y
M.Y. Ho, P.S. Khiew, D. Isa, T.K. Tan, W.S. Chiu, C.H. Chia. Charge storage performance of lithiated iron phosphate/activated carbon composite as symmetrical electrode for electrochemical capacitor. Current Applied Physics. 2014. https://doi.org/10.1016/j.cap.2014.09.001.
Mui Yen Ho, Poi Sim Khiew, Dino Isa, and Wee Siong Chiu. Electrochemical studies on nanometal oxide-activated carbon composite electrodes for aqueous supercapacitors. Functional Materials Letters. 2014. https://doi.org/10.1142/S1793604714400128
M Y Ho, P S Khiew, D Isa, W S Chiu, M.A.A.Hamid & R.Shamsudin. Nano Fe3O4 - Activated Carbon Composites for Aqueous Supercapacitors. Sains Malaysiana. 2014. https://www.ukm.my/jsm/pdf_files/SM-PDF-43-6-2014/10%20M.Y.%20Ho.pdf
Y. Ho, P. S. Khiew, D. Isa, T. K. Tan, W. S. Chiu, And C. H. Chia. A Review of Metal Oxide Composite Electrode Materials for Electrochemical Capacitors. Nano. 2014. https://doi.org/10.1142/S1793292014300023
Tan, Y.A., Chan, M.Y., Koay, S.C. and Ong, T.K., 2023. 3D polymer composite filament development from post‐consumer polypropylene and disposable chopstick fillers. Journal of Vinyl and Additive Technology. DOI: https://doi.org/10.1002/vnl.22026
Lee Hong, C., Ming Yeng, C., Seong Chun, K. and Thai Kiat, O., 2023. Denim fabric-reinforced unsaturated polyester: effect of different fabrication methods on mechanical properties and water absorption properties. Polymer Bulletin, pp.1-19. DOI: https://doi.org/10.1007/s00289-023-04845-y
Ariel Leong, J.J., Koay, S.C., Chan, M.Y., Choo, H.L., Tshai, K.Y. and Ong, T.K., 2022. Composite filament made from post-used styrofoam and corn husk fiber for fuse deposition modeling. Journal of Natural Fibers, 19(13), pp.7033-7048. DOI: https://doi.org/10.1080/15440478.2021.1941488
Chu, J.S., Koay, S.C., Chan, M.Y., Choo, H.L. and Ong, T.K., 2022. Recycled plastic filament made from post‐consumer expanded polystyrene and polypropylene for fused filament fabrication. Polymer Engineering & Science, 62(11), pp.3786-3795. DOI: https://doi.org/10.1002/pen.26144
Chun, K.S., Thangamuthu, S., Yeng, C.M. and Kiat, O.T., 2022. Effect of Coupling Agent on Properties of Composites Made from Styrofoam Waste and Coconut Shell. Journal of Physical Science, 33(3), pp.1-15. DOI: https://doi.org/10.21315/jps2022.33.3.1
K. Ong, K. Y. Tshai, P. S. Khiew, and E. H. Yap, “Thermal and mechanical properties of chemically treated oil palm fiber filled acrylonitrile butadiene styrene composites,” Materwiss. Werksttech., vol. 50, no. 3, pp. 240–247, Mar. 2019.
C. Koay, M. Y. Chan, P. M. Chou, K. Y. Tshai, T. K. Ong, and K. H. Cheah, “Effect of Coupling Agent Content on Properties of Composites Made from Polylactic Acid and Chrysanthemum Waste,” J. Vinyl Addit. Technol., vol. 3, no. 2, pp. 86–93, 2019.
K. Ong, K. Y. Tshai, H. L. Choo, P. S. Khiew, and S. L. Chung, “Mechanical performance and biodegradability of polyvinyl alcohol nanocomposite films,” Materwiss. Werksttech., vol. 51, no. 6, pp. 740–749, 2020.
S. Chun, T. Maimunah, C. M. Yeng, T. K. Yeow, and T.K. Ong, “Properties of corn husk fibre reinforced epoxy composites fabricated using vacuum-assisted resin infusion,” J. Phys. Sci., vol. 31, no. 3, pp. 17–31, 2020.
Mir Md, S.S., Chan, M.Y. and Koay, S.C., 2021. Mechanical properties of polyester/corn husk fibre composite produced using vacuum infusion technique. Polymers and Polymer Composites, 29(9_suppl), pp.S1532-S1540. DOI: 10.1177/09673911211056782 .
Tan, C.S., Chan, M.Y. and Koay, S.C., 2021. Preliminary Study of the Mechanical Properties of Hybrid Fibres Reinforced Unsaturated Polyester Composites. Journal of Physical Science, 32(3), pp. 45-59. DOI: https://doi.org/10.21315/jps2021.32.3.4
Yap, P.V., Chan, M.Y. and Koay, S.C., 2021. Preliminary Study on Mechanical Properties of 3D Printed Multi-materials ABS/PC Parts: Effect of Printing Parameters. Journal of Physical Science, 32(2), pp. 87-104. DOI: https://doi.org/10.21315/jps2021.32.2.7
Tong, D.J.Y., Koay, S.C., Chan, M.Y., Tshai, K.Y., Ong, T.K. and Buys, Y.F., 2021. Conductive Polymer Composites Made from Polypropylene and Recycled Graphite Scrap. Journal of Physical Science, 32(3), pp.31-44. DOI: https://doi.org/10.21315/jps2021.32.3.3
Yusoff, N. I. S. M., Wahit, M. U., Tham, W. H., Wong, T. W., Lee, X. Y., & Jamaludin, F. H. (2022). Biodegradable polymer blends and composites for biomedical applications. In Biodegradable Polymers, Blends and Composites (pp. 573-590). Woodhead Publishing.
Leong, K.L., Ho, M.Y., Lee, X.Y. and Yee, M.S.L., (2020). A review on the development of non-enzymatic glucose sensor based on graphene-based nanocomposites. Nano, 15(11), p.2030004.
Yusop, U. A., Osman, M. N. F., Ghani, M. Z. I. A., Azmi, M. A., Huai, T. K., Baharuddin, N. A., & Abd Rahman, H. (2023). Characterisation And Area-Specific Resistance Analysis Of Barium Strontium Cobalt Ferrite-Samarium Doped Ceria Carbonate-Argentum For Solid Oxide Fuel Cells. Malaysian Journal Of Microscopy, 19(1), 214-225.
Jaidi, Z., Azmi, M. A., Abd Rahman, H., Huai, T. K., Yusop, U. A., Ghani, M. Z. I. A., & Roslan, M. F. (2023). The Effect Of Milling Duration To The Structural Properties Of Silica From Rice Husk. Malaysian Journal Of Microscopy, 19(1), 193-201.
Tan, M.C., Chan, C.S., Lai, W.K., Chew, K.H. and Chua, P.Y., 2018. A novel computer vision approach to classify the mechanical stability of natural rubber latex concentrate. Intelligent Decision Technologies, 12(3), pp.323-334. https://doi.org/10.14416/j.asep.2020.04.002
S. Ng, P. L. Kiew, M. K. Lam, W. M. Yeoh & M. Y. Ho. Preliminary evaluation of the properties and biodegradability of glycerol-and sorbitol-plasticized potato-based bioplastics. International Journal of Environmental Science and Technology. 2022. https://doi.org/10.1007/s13762-021-03213-5
Shei Li Chung, Maxine Swee-Li Yee, Ling-Wei Hii, Wei-Meng Lim, Mui Yen Ho, Poi Sim Khiew, Chee-Onn Leong. Advances in Nanomaterials Used in Co-Delivery of siRNA and Small Molecule Drugs for Cancer Treatment. Nanomaterials. 2021. https://doi.org/10.3390/nano11102467
Rowen Lim, Peck Loo Kiew, Man Kee Lam, Wei Ming Yeoh, Mui Yen Ho. Corn starch/PVA bioplastics – The Properties and biodegradability study using Chlorella vulgaris cultivation. Asia-Pacific Journal of Chemical Engineering. 2021. https://doi.org/10.1002/apj.2622
Khok Lun Leong, Mui Yen Ho, Xiau Yeen Lee, and Maxine Swee-Li Yee . A Review on the Development of Non-Enzymatic Glucose Sensors based on Graphene-Based Nanocomposites. Nano, 2020. https://doi.org/10.1142/S1793292020300042
Ho Mui Yen, Luther Chong Yuong Oai, Khiew Poi Sim. Graphene-based Coating for Corrosion Application. International Journal of Recent Technology and Engineering. 2019. https://www.ijitee.org/wp-content/uploads/papers/v8i6s4/F10760486S419.pdf
Ho Mui Yen, Jim Lim Hui Kern, Khiew Poi Sim, Chiu Wee Siong. A Green Synthesis of Graphene Based Composite for Energy Storage Application. International Journal of Innovative Technology and Exploring Engineering. 2019. https://www.ijitee.org/wp-content/uploads/papers/v8i6s4/F10790486S419.pdf
Ho, M.Y., Khiew, P.S., Isa, D., Chiu, W.S. and Chia, C.H., 2017. Solvothermal synthesis of molybdenum oxide on liquid-phase exfoliated graphene composite electrodes for aqueous supercapacitor application. Journal of Materials Science: Materials in Electronics, 28, pp.6907-6918. https://DOI:10.1007/s10854-017-6391-y
M.Y. Ho, P.S. Khiew, D. Isa, T.K. Tan, W.S. Chiu, C.H. Chia. Charge storage performance of lithiated iron phosphate/activated carbon composite as symmetrical electrode for electrochemical capacitor. Current Applied Physics. 2014. https://doi.org/10.1016/j.cap.2014.09.001
Mui Yen Ho, Poi Sim Khiew, Dino Isa, and Wee Siong Chiu. Electrochemical studies on nanometal oxide-activated carbon composite electrodes for aqueous supercapacitors. Functional Materials Letters. 2014. https://doi.org/10.1142/S1793604714400128
M Y Ho, P S Khiew, D Isa, W S Chiu, M.A.A.Hamid & R.Shamsudin. Nano Fe3O4 - Activated Carbon Composites for Aqueous Supercapacitors. Sains Malaysiana. 2014. https://www.ukm.my/jsm/pdf_files/SM-PDF-43-6-2014/10%20M.Y.%20Ho.pdf
Y. Ho, P. S. Khiew, D. Isa, T. K. Tan, W. S. Chiu, And C. H. Chia. A Review of Metal Oxide Composite Electrode Materials for Electrochemical Capacitors. Nano. 2014. https://doi.org/10.1142/S1793292014300023
Tan, Y.A., Chan, M.Y., Koay, S.C. and Ong, T.K., 2023. 3D polymer composite filament development from post‐consumer polypropylene and disposable chopstick fillers. Journal of Vinyl and Additive Technology. DOI: https://doi.org/10.1002/vnl.22026
Lee Hong, C., Ming Yeng, C., Seong Chun, K. and Thai Kiat, O., 2023. Denim fabric-reinforced unsaturated polyester: effect of different fabrication methods on mechanical properties and water absorption properties. Polymer Bulletin, pp.1-19. DOI: https://doi.org/10.1007/s00289-023-04845-y
Ariel Leong, J.J., Koay, S.C., Chan, M.Y., Choo, H.L., Tshai, K.Y. and Ong, T.K., 2022. Composite filament made from post-used styrofoam and corn husk fiber for fuse deposition modeling. Journal of Natural Fibers, 19(13), pp.7033-7048. DOI: https://doi.org/10.1080/15440478.2021.1941488
Chu, J.S., Koay, S.C., Chan, M.Y., Choo, H.L. and Ong, T.K., 2022. Recycled plastic filament made from post‐consumer expanded polystyrene and polypropylene for fused filament fabrication. Polymer Engineering & Science, 62(11), pp.3786-3795. DOI: https://doi.org/10.1002/pen.26144
Chun, K.S., Thangamuthu, S., Yeng, C.M. and Kiat, O.T., 2022. Effect of Coupling Agent on Properties of Composites Made from Styrofoam Waste and Coconut Shell. Journal of Physical Science, 33(3), pp.1-15. DOI: https://doi.org/10.21315/jps2022.33.3.1
K. Ong, K. Y. Tshai, P. S. Khiew, and E. H. Yap, “Thermal and mechanical properties of chemically treated oil palm fiber filled acrylonitrile butadiene styrene composites,” Materwiss. Werksttech., vol. 50, no. 3, pp. 240–247, Mar. 2019.
C. Koay, M. Y. Chan, P. M. Chou, K. Y. Tshai, T. K. Ong, and K. H. Cheah, “Effect of Coupling Agent Content on Properties of Composites Made from Polylactic Acid and Chrysanthemum Waste,” J. Vinyl Addit. Technol., vol. 3, no. 2, pp. 86–93, 2019.
K. Ong, K. Y. Tshai, H. L. Choo, P. S. Khiew, and S. L. Chung, “Mechanical performance and biodegradability of polyvinyl alcohol nanocomposite films,” Materwiss. Werksttech., vol. 51, no. 6, pp. 740–749, 2020.
S. Chun, T. Maimunah, C. M. Yeng, T. K. Yeow, and T.K. Ong, “Properties of corn husk fibre reinforced epoxy composites fabricated using vacuum-assisted resin infusion,” J. Phys. Sci., vol. 31, no. 3, pp. 17–31, 2020.
Mir Md, S.S., Chan, M.Y. and Koay, S.C., 2021. Mechanical properties of polyester/corn husk fibre composite produced using vacuum infusion technique. Polymers and Polymer Composites, 29(9_suppl), pp.S1532-S1540. DOI: 10.1177/09673911211056782 .
Tan, C.S., Chan, M.Y. and Koay, S.C., 2021. Preliminary Study of the Mechanical Properties of Hybrid Fibres Reinforced Unsaturated Polyester Composites. Journal of Physical Science, 32(3), pp. 45-59. DOI: https://doi.org/10.21315/jps2021.32.3.4
Yap, P.V., Chan, M.Y. and Koay, S.C., 2021. Preliminary Study on Mechanical Properties of 3D Printed Multi-materials ABS/PC Parts: Effect of Printing Parameters. Journal of Physical Science, 32(2), pp. 87-104. DOI: https://doi.org/10.21315/jps2021.32.2.7 .
Tong, D.J.Y., Koay, S.C., Chan, M.Y., Tshai, K.Y., Ong, T.K. and Buys, Y.F., 2021. Conductive Polymer Composites Made from Polypropylene and Recycled Graphite Scrap. Journal of Physical Science, 32(3), pp.31-44. DOI: https://doi.org/10.21315/jps2021.32.3.3
Yusoff, N. I. S. M., Wahit, M. U., Tham, W. H., Wong, T. W., Lee, X. Y., & Jamaludin, F. H. (2022). Biodegradable polymer blends and composites for biomedical applications. In Biodegradable Polymers, Blends and Composites (pp. 573-590). Woodhead Publishing.
Leong, K.L., Ho, M.Y., Lee, X.Y. and Yee, M.S.L., (2020). A review on the development of non-enzymatic glucose sensor based on graphene-based nanocomposites. Nano, 15(11), p.2030004.
Yusop, U. A., Osman, M. N. F., Ghani, M. Z. I. A., Azmi, M. A., Huai, T. K., Baharuddin, N. A., & Abd Rahman, H. (2023). Characterisation And Area-Specific Resistance Analysis Of Barium Strontium Cobalt Ferrite-Samarium Doped Ceria Carbonate-Argentum For Solid Oxide Fuel Cells. Malaysian Journal Of Microscopy, 19(1), 214-225.
Jaidi, Z., Azmi, M. A., Abd Rahman, H., Huai, T. K., Yusop, U. A., Ghani, M. Z. I. A., & Roslan, M. F. (2023). The Effect Of Milling Duration To The Structural Properties Of Silica From Rice Husk. Malaysian Journal Of Microscopy, 19(1), 193-201.
Tan, M.C., Chan, C.S., Lai, W.K., Chew, K.H. and Chua, P.Y., 2018. A novel computer vision approach to classify the mechanical stability of natural rubber latex concentrate. Intelligent Decision Technologies, 12(3), pp.323-334.
Conference Proceedings
Teoh, M.W., Ng, C.K., Lee, S.K., Ramesh, S., Ting, C.H., Chuah, Y.D., Lim, I.Y., Tan, C.Y. and Sutharsini, U., 2023. Densification behaviors of hydroxyapatite/pectin bio-ceramics. Materials Today: Proceedings. https://doi.org/10.1016/j.matpr.2023.04.388
Teoh, M.W., Ng, C.K., Lee, K.Y., Ramesh, S., Ting, C.H., Chuah, Y.D., Tan, C.Y. and Sutharsini, U., 2023, January. Effect of pectin integration in biowaste chicken bones to produce hydroxyapatite. In AIP Conference Proceedings (Vol. 2643, No. 1). AIP Publishing. https://doi.org/10.1063/5.0110307
Yuze, I.L., Ng, C.K., Poon, K.L., Ting, C.H., Ramesh, S., Chuah, Y.D., Tan, C.Y., Lee, K.Y. and Sutharsini, U., 2023, January. Effects of sintering on the properties of ceria co-doped scandia stabilised zirconia. In AIP Conference Proceedings (Vol. 2643, No. 1). AIP Publishing. https://doi.org/10.1063/5.0110315
Wanniarachchi, W.A., Janani, V., Sutharsini, U., Thanihaichelvan, M., Ramesh, S. and Ng, C.K., 2023, January. Synthesis and sintering studies of hydroxyapatite derived from biogenic waste materials. In AIP Conference Proceedings (Vol. 2643, No. 1). AIP Publishing. https://doi.org/10.1063/5.0113860
Lee, K.S., Ya'akub, S.R.P., Ng, C.K. and Ramesh, S., 2022. Low-temperature degradation behaviour of microwave sintered CuO-doped Y-TZP ceramics. Materials Today: Proceedings, 66, pp.2791-2795. https://doi.org/10.1016/j.matpr.2022.06.517
Theenagaran, S., Ting, C.H., Chin, K.L., Yeo, W.H., Ng, C.K., Ramesh, S. and Teng, W.D., 2021, March. The effects of sintering additives on the sintering of 3Y-TZP ceramic. In IOP Conference Series: Materials Science and Engineering (Vol. 1117, No. 1, p. 012010). IOP Publishing. https://doi.org/10.1088/1757-899X/1117/1/012010
Theenagaran, S., Chin, K.L., Jun, H.K., Liang, M.S., Ng, C.K., Ramesh, S., Teng, W.D. and Ting, C.H., 2020, March. Influence of sintering profile on the mechanical properties of manganese oxide doped 3Y-TZP. In IOP Conference Series: Earth and Environmental Science (Vol. 463, No. 1, p. 012094). IOP Publishing. https://doi.org/10.1088/1755-1315/463/1/012094
Lim, J.X., Ong, T.K., Ng, C.K., Chua, I.W., Lee, Y.B., Yap, Z.Y. and Bakar, R.A., 2021, December. Development of particleboard from green coconut waste. In Journal of Physics: Conference Series (Vol. 2120, No. 1, p. 012034). IOP https://doi.org/10.1088/1742-6596/2120/1/012034
Ng, C.K., Ramesh, S., Tan, C.Y., Muchtar, A., Somalu, M.R., Lew, W.S., Ting, C.H., Chuah, Y.D. and Sutharsini, U., 2019, June. Thermal stability behaviour of Scandia stabilised zirconia. In IOP Conference Series: Earth and Environmental Science (Vol. 268, No. 1, p. 012078). IOP Publishing. https://doi.org/10.1088/1755-1315/268/1/012078
Ting, M.L., Ting, C.H., Chin, K.L., Yeo, W.H., Jun, H.K., Ng, C.K. and Singh, R., 2019, June. Microwave Sintering of Yttria-Stabilised Zirconia. In IOP Conference Series: Earth and Environmental Science (Vol. 268, No. 1, p. 012053). IOP Publishing. https://doi.org/10.1088/1755-1315/268/1/012053
Wei Ong, Mui Yen Ho, Peck Loo Kiew, Teck Hock Lim, Khok Lun Leong, Shuan Yao Tan, Jin Xiang Lim. In2O3/MoS2/Reduced Graphene Oxide Nanostructure as Composite Electrodes for Supercapacitors. Key Engineering Materials. 2022. https://doi.org/10.4028/p-bb4r2i
Shuan Yao Tan, Mui Yen Ho, Khok Lun Leong, Wei Ong, Jin Xiang Lim. Synthesis of Graphene / Silver/ Molybdenum Disulphide Composite for Supercapacitor Application. Materials Science Forum, 2022. https://doi.org/10.4028/p-u48e5d
M.Y. Ho, P.S. Khiew, W.S. Chiu. Green and Facile Synthesis of Molybdenum Oxide-Graphene Composite Electrodes for Supercapacitor Application. Materials Science Forum. 2016. DOI:10.1007/s10854-017-6391-y.
M.Y. Ho, P.S. Khiew, W.S. Chiu. LiFePO4 - Activated Carbon Composite Electrode as Symmetrical Electrochemical Capacitor in Mild Aqueous Electrolyte. Applied Mechanics and Materials. 2014. https://doi.org/10.4028/www.scientific.net/AMM.627.3
M.Y. Ho, Poi Sim Khiew. Heat-treated Fe3O4 –Activated carbon Nanocomposite for High Performance Electrochemical Capacitor. Advanced Materials Research, 2014. https://doi.org/10.4028/www.scientific.net/AMR.894.349
Chow, H.M., Koay, S.C., Choo, H.L., Chan, M.Y. and Ong, T.K., 2022, May. Investigating effect of compatibilizer on polymer blend filament from post-used styrofoam and polyethylene for fused deposition modelling. In Journal of Physics: Conference Series (Vol. 2222, No. 1, p. 012006). IOP Publishing.
Yap, E.P., Koay, S.C., Chan, M.Y., Choo, H.L., Ong, T.K. and Tshai, K.Y., 2021, December. Recycling polymer blend made from post-used styrofoam and polyethylene for fuse deposition modelling. In Journal of Physics: Conference Series (Vol. 2120, No. 1, p. 012021). IOP Publishing.
William, L.J.W., Koay, S.C., Chan, M.Y., Pang, M.M., Ong, T.K. and Tshai, K.Y., 2021, December. Recycling polymer blend made from post-used Styrofoam and polypropylene for fuse deposition modelling. In Journal of Physics: Conference Series (Vol. 2120, No. 1, p. 012020). IOP Publishing.
Juarez, C.Z.J., Koay, S.C., Chan, M.Y., Choo, H.L., Pang, M.M. and Ong, T.K., 2021. Finite element analysis study on lattice structure fabricated recycled polystyrene from post-used styrofoam waste. In MATEC Web of Conferences (Vol. 335, p. 03007). EDP Sciences.
Sulaiman, M.S.M., Koay, S.C., Chan, M.Y., Choo, H.L., Pang, M.M. and Ong, T.K., 2021. Finite Element Analysis Study on Lattice Structure Fabricated Using Corn Husk Fibre Reinforced Recycled Polystyrene Composite. In MATEC Web of Conferences (Vol. 335, p. 03011). EDP Sciences.
Lee, Y.D., Pang, M.M., Koay, S.C., Ong, T.K. and Tshai, K.Y., 2020, May. Effect of empty fruit bunch fibre loading on properties of plasticised polylactic acid biocomposites. In AIP Conference Proceedings (Vol. 2233, No. 1). AIP Publishing.
Y. Ng, S. C. Koay, M. Y. Chan, H. L. Choo, and T. K. Ong, “Preparation and characterisation of 3D printer filament from post-used styrofoam,” 2020, vol. 020022, no. May, p. 020022.
K. Ong, H. L. Choo, S. M. Lee, and K. Y. Kong, “Oil Palm Wastes as Sustainable Sound Absorbing Particleboard,” IOP Conf. Ser. Mater. Sci. Eng., vol. 815, no. 1, p. 012010, May 2020.
K. Ong, H. L. Choo, W. J. Choo, S. C. Koay, and M. M. Pang, Recycling of polylactic acid (pla) wastes from 3d printing laboratory. 2020.
P. Yap, S. C. Koay, M. Y. Chan, H. L. Choo, T. K. Ong, and K. Y. Tshai, “Recycling Polymer Blend made from Post-used Styrofoam and Polyethylene for Fuse Deposition Modelling,” J. Phys. Conf. Ser., vol. 2120, no. 1, p. 012021, Dec. 2021.
J. W. William, S. C. Koay, M. Y. Chan, M. M. Pang, T. K. Ong, and K. Y. Tshai, “Recycling Polymer Blend made from Post-used Styrofoam and Polypropylene for Fuse Deposition Modelling,” J. Phys. Conf. Ser., vol. 2120, no. 1, p. 012020, Dec. 2021.
S. M. Sulaiman, S. C. Koay, M. Y. Chan, H. L. Choo, M. M. Pang, and T. K. Ong, “Finite Element Analysis Study on Lattice Structure Fabricated Using Corn Husk Fibre Reinforced Recycled Polystyrene Composite,” MATEC Web Conf., vol. 335, p. 03011, Jan. 2021.
Z. J. Juarez, S. C. Koay, M. Y. Chan, H. L. Choo, M. M. Pang, and T. K. Ong, “Finite Element Analysis Study on Lattice Structure Fabricated Recycled Polystyrene from Post-used Styrofoam Waste,” MATEC Web Conf., vol. 335, p. 03007, Jan. 2021.
J. Y. Tong, S. C. Koay, M. Y. Chan, K. Y. Tshai, T. K. Ong, and Y. F. Buys, “Conductive Polymer Composites Made from Polypropylene and Recycled Graphite Scrap,” J. Phys. Sci., vol. 32, no. 3, pp. 31–44, Nov. 2021.
M. Chow, S. C. Koay, H. L. Choo, M. Y. Chan, and T. K. Ong, “Investigating effect of compatibilizer on polymer blend filament from post-used styrofoam and polyethylene for fused deposition modelling,” J. Phys. Conf. Ser., vol. 2222, no. 1, p. 012006, May 2022.
Mohd Eqhwan Iskandar, H. Ruey Ong, M. Maksudur Rahman Khan, R. Ramli, T. K. Ong, and C. S. Hong, “Influence of rice husk based nanosilica in rheological and stability of binary mixture fluid,” Mater. Today Proc., vol. 64, pp. A1–A5, 2022.
N. Arulnathan, B. C. W. Koay, W. K. Lai, T. K. Ong, and L. L. Lim, “Background Subtraction for Accurate Palm Oil Fruitlet Ripeness Detection,” in 2022 IEEE International Conference on Automatic Control and Intelligent Systems (I2CACIS), 2022, pp. 48–53.
Ko, R. V. K., Soon, K. H., Siddique, B. M., Jayamani, E., Lee, X. Y., & Palanisamy, S. (2023, May). A comparative study on graft copolymerization of MMA onto wood fiber under microwave and conventional heating. In Journal of Physics: Conference Series (Vol. 2484, No. 1, p. 012010). IOP Publishing.
Lee, X. Y.*, Fan, H. W. & Koh, H. J. (2020). Characterization of Electrically Conductive Hydrogels – Polyaniline/Polyacrylamide and Gephene/Polyacrylamide. Materials Science Forum.
Lai, W.K., Phoon, Z.H., Chew, K.H., Kam, M.G. and Ping, Y.C., 2016, November. Image multi-thresholding to characterise the mechanical stability of rubber latex concentrate. In 2016 International Conference on Digital Image Computing: Techniques and Applications (DICTA) (pp. 1-8). IEEE.
Weng Kin Lai, Wen Siu Low, Jay Ming Lim, Khoon Hee Chew, Ping Yong Chua, "A New Approach to Characterize the Quality of Colloids", Proceedings of the Second Asia Pacific Rubber Conference (APRC 2015), pp 82 - 86, October15 – October 16, 2015, Phuket, Thailand.
Tan, M.C., Chan, C.S., Lai, W.K., Chew, K.H. and Chua, P.Y., 2015, October. A Novel Particle Characterization Technique in Enhancing the Mechanical Stability Test for Natural Rubber Latex Concentrate. In Proceedings of the Second Asia Pacific Rubber Conference (APRC 2015 (pp. 72-76).