"Development of a biodegradable device based on starch and graphite (TPS-Gr) for application as an electrochemical sensor"

Autores: Amanda de Sousa Martinez de Freitas, Ana Paula Lemes, Marystela Ferreira.

Instituições: UNIFESP/SJC.

Autor apresentador: Amanda de Sousa Martinez de Freitas.

Resumo: The development of alternative devices for application such as electrochemical sensors, which make it possible to obtain results with low cost and environmental impact when compared to the most used materials is a challenge. These device development needs go hand in hand with concern about threats to the environment due to the generation of waste. Synthetic polymers, which have been widely used due to their superior properties and low aggregate cost. However, considering environmentally friendly consumption, there is a growing interest in the use of biodegradable polymers as substitutes for conventional polymeric materials. The use of thermoplastic starch (TPS), is a practical and economical way to improve the properties of native starch, however TPS does not have conductive properties that make its application in electrochemical sensors feasible. As a result, it was necessary to add the material with graphite (Gr) in order to form a conductive and biodegradable composite. The material developed based on thermoplastic starch with graphite (TPS-Gr), for the development of an electrochemical device. The conductive material obtained was analyzed by SEM, DR-X, FTIR, wettability, Electrochemical Impedance Spectroscopy (EIS) and Cyclic Voltammetry (CV). The next steps of the project aim to apply this device for the detection of pesticides.

KEYWORDS: Electrochemical sensor, biopolymer, conductive material, electrochemical detection.

Link do vídeo: https://youtu.be/8e9sAbPz10E

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