Waste Medical Cotton Reinforced Chitosan Biocomposite Film Using Tannic Acid as the Crosslinking Agent

ABSTRACT

Sustainable biocomposites were prepared from the reinforcement of waste medical grade cotton (MGC) in a chitosan matrix. This work presents an investigation of the influence of tannic acid on the chitosan-MGC biocomposite. A series of samples comprising pure chitosan film, MGC and chitosan-MGC biocomposites were crosslinked with tannic acid. The interfacial interaction among the components in biocomposite was established by FTIR and SEM study. The crystallinity of biocomposite was in between chitosan film and MGC sample as shown by XRD. Crosslinked chitosan-MGC biocomposite shows improvement in mechanical properties. The thermal stability of the composite sample is considerable stabler than MGC.

摘要

以医用废棉（MGC）为增强材料在壳聚糖基质中制备了生物复合材料.本文研究了单宁酸对壳聚糖医用棉生物复合材料的影响.以纯壳聚糖膜、医用棉和壳聚糖医用棉生物复合材料为原料与单宁酸进行交联.通过FTIR和SEM研究建立了生物复合材料中各组分之间的界面相互作用.XRD分析表明生物复合材料的结晶度介于壳聚糖膜与医用棉样品之间.交联壳聚糖医用棉生物复合材料力学性能提高.复合试样的热稳定性明显优于医用棉.

KEYWORDS:

• Waste medical cotton
• chitosan
• biocomposite
• tannic acid
• crosslinking agent
• mechanical property

关键词:

• 废药棉
• 芝加哥
• 生物复合材料
• 单宁酸
• 交联剂
• 机械性能

Acknowledgments

Authors would like to acknowledge FIST – DST project, Govt. of India and World Bank-funded TEQIP-II for providing the machinery for this research project.