Abstract

Impact of Sodium Bromide salt on the microstructural properties of Poly (Vinyl Alcohol) and Sodium salt Carboxymethyl cellulose (PVA/NaCMC:70/30) blend biopolymer electrolyte films were investigated. The films were prepared by conventional solution casting method and were subjected to UV-Visible, XRD, SEM, AC, & DC conductivity studies. Microstructural properties of PVA/NaCMC blend system got affected due to complex-formation. Amorphosity of the poly blend-system increased upon doping indicating rearrangement of polymer chain due to the interaction of Na⁺with the functional group of PVA/NaCMC blend system. It is found that the degree of crystallinity of the PVA/NaCMC blend films decreased upon doping, due to molecular chain disorderness that facilitates the migration of ions due to enhancement in the free volume as observed from SEM.

摘要

研究了溴化钠盐对聚（乙烯醇）和钠盐羧甲基纤维素（PVA/NaCMC：70/30）混合生物聚合物电解质膜的微观结构特性的影响。薄膜是通过传统的溶液浇铸方法制备的，并进行了紫外-可见光、XRD、SEM、AC 和 DC 电导率研究。PVA/NaCMC 共混体系的显微结构由于络合物的形成而受到影响。掺杂后聚合物共混体系的无定形度增加，表明由于 Na ⁺的相互作用导致聚合物链的重排具有PVA/NaCMC共混体系的官能团。发现 PVA/NaCMC 共混膜的结晶度在掺杂后降低，这是由于分子链无序性导致自由体积增加导致离子迁移，如从 SEM 观察到的。