Reuse polyester/cotton blend fabrics to prepare fiber reinforced composite: Fabrication, characterization, and interfacial properties evaluation,Polymer Composites

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Reuse polyester/cotton blend fabrics to prepare fiber reinforced composite: Fabrication, characterization, and interfacial properties evaluation
Polymer Composites ( IF 4.8 ) Pub Date : 2020-09-29 , DOI: 10.1002/pc.25814
Yuan Chen ₁ , Xiaoqing Wu ₁ , Junfu Wei _{2,

3,

4} , Hailiang Wu _{1,

5} , Jing Fang ₁

Affiliation

Substantial amount of polyethylene terephthalate/cotton (PET/cotton) blend fabrics have been handled as waste especially in recent decades on account of the technological barrier and/or low economic benefit of recycling PET from PET/cotton fabrics. Herein, a facile and effective approach was utilized to modify PET/cotton fabrics with co‐deposition of polyethyleneimine (PEI) and catechol (CCh) to improve the interfacial bonding of fiber‐matrix. The surface morphology and composition of fabrics were investigated by FESEM, ATR/FTIR, and XPS. Meanwhile, the surface properties were analyzed via dynamic contact angle. The results indicated that the PEI‐CCh co‐deposition aggregates were modified onto fabric surface through the synergy of intermolecular hydrogen bonding and π‐π stacking. Interlaminar shear strength (ILSS) and interfacial shear strength (IFSS) of modified PET/cotton reinforced composites were 39.71% and 50.25% higher than that of untreated PET/cotton reinforced composites, respectively. Furthermore, the enhancement mechanisms of composites are systematically discussed.

中文翻译：

重复使用聚酯/棉混纺织物以制备纤维增强复合材料：制备，表征和界面性能评估

由于技术壁垒和/或从PET /棉织物中回收PET的低经济利益，特别是在最近几十年中，已经将大量的聚对苯二甲酸乙二酯/棉（PET /棉）混合织物作为废物处理。本文中，一种简便有效的方法是通过将聚乙烯亚胺（PEI）和邻苯二酚（CCh）共沉积来改性PET /棉织物，以改善纤维基质的界面粘合。用FESEM，ATR / FTIR和XPS研究了织物的表面形态和组成。同时，通过动态接触角分析了表面性质。结果表明，PEI-CCh共沉积聚集体通过分子间氢键合和π-π堆积的协同作用而被修饰到织物表面上。改性PET /棉增强复合材料的层间剪切强度（ILSS）和界面剪切强度（IFSS）分别比未处理的PET /棉增强复合材料高39.71％和50.25％。此外，系统地讨论了复合材料的增强机理。

更新日期：2020-09-29

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