Structural and electrical properties of cashew gum thin film deposited by spray pyrolysis

Q2 Materials Science

Polymers from Renewable Resources Pub Date : 2023-04-27 DOI:10.1177/20412479231173235

M. Erouel, Meriem Saadi, Abdoulaye Tall, B. Tiss, Mané Seck, A. Diallo, El Hadji Babacar Ly, D. Kobor, N. Bouguila, K. Khirouni

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引用次数: 0

Abstract

Biopolymers obtained from renewable resources became the center of public interest by virtue of their environmental and commercial advantages. Natural polymers such as starch, almond gum, chitosan and arabic gum were investigated to get fully or partially biodegradable dielectric material. Thus, in this article we study the material properties of cashew gum. This biopolymer is an exudate collected from occidental anacardium tree. For this investigation, scanning electron microscopy of powder and thin film cashew gum showed homogenous and slightly rough surface morphology with visible wrinkles. The thermal analyses such as thermogravimetric (TGA) and differential scanning calorimeter were realized. thermogravimetric thermogram shows two distinct stages of decomposition. The first around 150°C is attributed to moisture evaporation with loss in weight of 9.7%. The second transition, between 255°C and 330°C, is related to the decomposition of cashew gum with loss in weight of 50%. UV-visible spectra of the cashew gum thin film show a low absorbance and high transmittance. For this material, we obtained a direct optical band gap around 4.56 eV. In addition, the dielectric and electrical characterizations lead to conclude that cashew gum may be interesting for transistor applications as a gate dielectric.

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喷雾热解制备腰果胶薄膜的结构和电学性能

从可再生资源中获得的生物聚合物因其环境和商业优势而成为公众关注的焦点。研究了淀粉、杏仁胶、壳聚糖和阿拉伯胶等天然聚合物制备完全或部分可生物降解的介质材料。因此，本文对腰果胶的材料性能进行了研究。这种生物聚合物是一种从西方心梗树中收集的渗出物。在本研究中，粉末和薄膜腰果胶的扫描电镜显示，表面形貌均匀且略粗糙，并有可见的皱纹。实现了热重法(TGA)和差示扫描量热法等热分析。热重热图显示了两个不同的分解阶段。第一次大约150°C是由于水分蒸发造成的，重量损失为9.7%。第二次转变在255°C和330°C之间，与腰果胶的分解有关，重量损失50%。腰果胶薄膜的紫外可见光谱显示出低吸光度和高透射率。对于这种材料，我们获得了约4.56 eV的直接光学带隙。此外，电介质和电学特性得出结论，腰果胶可能是晶体管栅极电介质的有趣应用。

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来源期刊

Polymers from Renewable Resources Materials Science-Polymers and Plastics

CiteScore

3.50

自引率

0.00%

发文量

期刊介绍： Polymers from Renewable Resources, launched in 2010, publishes leading peer reviewed research that is focused on the development of renewable polymers and their application in the production of industrial, consumer, and medical products. The progressive decline of fossil resources, together with the ongoing increases in oil prices, has initiated an increase in the search for alternatives based on renewable resources for the production of energy. The prevalence of petroleum and carbon based chemistry for the production of organic chemical goods has generated a variety of initiatives aimed at replacing fossil sources with renewable counterparts. In particular, major efforts are being conducted in polymer science and technology to prepare macromolecular materials based on renewable resources. Also gaining momentum is the utilisation of vegetable biomass either by the separation of its components and their development or after suitable chemical modification. This journal is a valuable addition to academic, research and industrial libraries, research institutions dealing with the use of natural resources and materials science and industrial laboratories concerned with polymer science.