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Ongoing work.
A)
B)
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Work carried out at IITK
20. Patwal, R.; Sarkar, R.* High-strength, robust, and recyclable BPA-free epoxy resins based on dynamic transetherification. RSC Applied Polymers 2026, Just accepted
Invited article (emerging investigator)
https://doi.org/10.1039/D6LP00368K
19. Chaurasia, H.; Dixit, A.#; Yadav, N.#; Singh, S.; Misra, S. K.*; Sarkar, R.* Functionalization of Dual-Stimuli Responsive Double-Network Hydrogels with Silver Nanoparticles for Antibacterial Performance. Macromol. Chem. Phys. 2026, 227, 70315.
(Invited article)
# contributed equally
https://doi.org/10.1002/macp.70315
18. Gupta, V.; Sarkar, R.* Design of High-Performance, Robust, and Recyclable Epoxy Resins. ACS Appl. Mater. Interfaces 2026, 18, 41566–41580.
17. Ali, S. A.; Ashish, P. K.*; Sarkar, R.; Sikhwal, K.; Das, D.; Thakur, A.; Cai, X.; Sreeram, A. Hydrophobic Asphalt Emulsion to Reduce Adhesion between Ice and Asphalt Pavement Surface: Development and Evaluation for Its Application over Asphalt Roads in Subzero Temperature Regions. Cold Reg. Sci. Technol. 2026, 251, 105052.
16. Das, S.; Gupta, V.; Sarkar, R.* Upcycling of Waste PET Via Recyclable Crosslinked Polyimine Network. Polymer 2026, 360, 130365.
https://doi.org/10.1016/j.polymer.2026.130365
15. Sharma, N.* K.; Ashraf, Y.; Srivastava, E.; Gupta, V.; Sarkar, R.; Kumar, A.; Ghatak, A. Castor Oil and Maleic Acid-Derived Elastomers: Towards the Bio-Derived, Biocompatible, Degradable Alternative of the Conventional Elastomer. J. Polym. Res. 2026, 33, 240. https://doi.org/10.1007/s10965-026-04974-8.
https://link.springer.com/article/10.1007/s10965-026-04974-8
14. "High-Performance and Recyclable Epoxy Resins for High-Temperature Adhesives" Vatsalya Gupta, Ramkrishna Sarkar, (2026), Indian Patent Filled
13. Singh, S.; Sarkar, R.* Design of Bio-Based Polycondensates: Structural Regulation of Properties and Closed-Loop Recycling. Macromolecules 2026, 59, 6197–6208.
https://doi.org/10.1021/acs.macromol.6c00313
2026
11. Patwal, R.# ; Kumar, P.# ; Gupta, V.; Sarkar, R.* Enabling the Recyclability of Epoxy Networks via Dynamic Ether Linkages. Macromolecules 2025, 58, 13169–13179.
https://doi.org/10.1021/acs.macromol.5c02289
# Contributed equally
10. Amphiphilic copolymer based solid-state composite electrolyte for room temperature Na-ion batteries. Vatsalya Gupta, Ramkrishna Sarkar, Nelofer, Sudarshan Narayanan, Mayanglambam Dinachandra Singh, Karanpal Singh. (2025), Indian Patent Granted
In this study, we developed a specially designed fluorocarbon–PEO graft copolymer–based solid polymer electrolyte that delivers:
🔹 ~10× higher ionic conductivity than pristine PEO at room temperature.
🔹 A high Na⁺ transference number (~0.46), among the highest reported for PEO-based systems.
🔹 Superior thermal stability, making it a strong candidate for safer, high-performance all-solid-state sodium-ion batteries.
9. Kumar, P.#; Patwal, R.#; Sarkar, R.* Design of a Recyclable Thiol-Ene Network with Dynamic Ether Linkages: Regulation of Creep and Dynamicity. Macromolecules 2025, 58, 12378–12387.
https://doi.org/10.1021/acs.macromol.5c02805
# Contributed equally
8. Nelofer#; Gupta, V.#; Singh, K.; Singh, M. D.; Nalwa, K. S.; Narayanan, S.*; Sarkar, R.* Designing Fluorocarbon-Based Polymeric Electrolytes with High Cationic Transference Number for All-Solid-State Sodium-Ion Batteries. Polymer 2025, 340, 129210.
https://doi.org/10.1016/j.polymer.2025.129210
# Contributed equally
7. Singh, S.; Sarkar, R.* Upcycling of Polymer Waste to Closed-Loop Recyclable Polymers. Polym. Chem. 2025, 16, 4870–4880.
https://doi.org/10.1039/D5PY00858A
6. Gupta, V.; Sarkar, R.* Benzyl Thioether: A Dynamic Covalent Motif for Covalent Adaptable Networks. Macromolecules 2025, 58, 10856–10867.
5. Dixit, A.; Sarkar, R.* Designing Super Tough, Highly Stretchable, and Multi-Responsive Hydrogels with Self-Healing Properties. Polymer 2025, 338, 129068.
4. Kumar, P.Ϯ; Agarwal, Y.Ϯ; Majumdar, S.; Sarkar, R.* Closed-Loop Recyclable Cross-Linked Polymeric Materials via Dynamic Transetherification. Chem. Commun. 2025, 61, 14641–14644
https://doi.org/10.1039/D5CC02506K
ϮAuthors contributed equally
(Appeared as "ChemComm Most Popular 2025 Articles")
This work is dedicated to Prof. S. Ramakrishnan, IISc Bangalore, on the occasion of his 65th birthday
3. Gupta, V.; Majumdar, S.; Das, D.; Ashish, P. K.; Sarkar, R.* Upcycling of Waste PET via Reprocessable Thermoset-like Covalent Adaptable Networks (CANs). Polymer 2025, 328, 128438.
2. Gupta, V.; Sarkar, R.* Closed-Loop Recycling of Covalent Adaptable Network (CAN) Derived from Dopamine and Waste PET. J. Polym. Sci. 2025, 63, 2237–2247.
1. Kumar, P.; Gupta, V.; Majumdar, S.; Patwal, R.; Das, D.; Ashish, P. K.; Sarkar, R.* Benzyl Ether: A Dynamic Covalent Motif for Designing a Trans-Ether Based Covalent Adaptable Network (CAN). Chem. Commun. 2025, 61, 5621–5624.
https://doi.org/10.1039/D5CC00788G
This article is part of the themed collection: ChemComm Milestones – First Independent Articles.
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