Preparation and Characterization of Chitosan/Agar Blended Films: Part 2. Thermal, Mechanical, and Surface Properties

E. A. Elhefian, M. Nasef, A. Yahaya
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引用次数: 51

Abstract

Chitosan/agar (CS/AG) films were prepared by blending different proportions of chitosan and agar (considering chitosan as the major component) in solution forms. The thermal stability of the blended films was studied using thermal gravimetric analysis (TGA). It was revealed that chitosan and agar form a compatible blend. Studying the mechanical properties of the films showed a decrease in the tensile strength and elongation at break with increasing agar content. Blending of agar with chitosan at all proportions was found to form hydrogel films with enhanced swelling compared to the pure chitosan one. Static water contact angle measurements confirmed the increasing affinity of the blended films towards water suggesting that blending of agar with chitosan improves the wettability of the obtained films.
壳聚糖/琼脂混合膜的制备与表征:第2部分。热,机械和表面性能
以壳聚糖为主要成分,将不同比例的壳聚糖与琼脂溶液混合,制备了壳聚糖/琼脂(CS/AG)膜。采用热重分析(TGA)对共混膜的热稳定性进行了研究。结果表明,壳聚糖与琼脂形成了一种相容性良好的共混物。对薄膜力学性能的研究表明,随着琼脂含量的增加,薄膜的抗拉强度和断裂伸长率下降。与纯壳聚糖相比,琼脂与壳聚糖以各种比例混合形成的水凝胶膜具有增强的膨胀性。静态水接触角测试证实了混合膜对水的亲和力增加,这表明琼脂与壳聚糖的混合提高了所得到的膜的润湿性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
E-journal of Chemistry
E-journal of Chemistry CHEMISTRY, MULTIDISCIPLINARY-
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