Study on the improvement of water vapor permeability and moisture absorption of microfiber synthetic leather base by collagen

超细纤维 材料科学 热重分析 极限抗拉强度 复合材料 接触角 傅里叶变换红外光谱 吸水率 扫描电子显微镜 基础(拓扑) 纤维 化学工程 数学分析 数学 工程类
作者
Taotao Qiang,Xiaoqin Wang,Xuechuan Wang,Longfang Ren,Peiying Guo
出处
期刊:Textile Research Journal [SAGE Publishing]
卷期号:85 (13): 1394-1403 被引量:13
标识
DOI:10.1177/0040517514545262
摘要

The microfiber synthetic leather base pretreated by sulfuric acid was modified by collagen in which the organic phosphine FP was used as a cross-linking agent, for the purpose of increasing the active groups and improving its properties. Compared with the pretreated base, it was found that the amino content in the modified base was two times and the carboxyl content was three times. The water vapor permeability of the modified base increased by 65% and the moisture absorption increased by 181%. It was further found that the tensile strength of the modified base was 19.06 N/mm 2 , the elongation at break was 54% and the tear strength was 112.34 N/mm. The test results of Fourier transform infrared spectroscopy, scanning electron microscopy, atomic force microscopy, thermogravimetric analysis and water contact angle showed that the collagen molecules had evenly cross-linked with fiber. The modified base microfiber dispersion was greatly increased, the hydrophility was enhanced and the relative average roughness was decreased. Moreover, modification by collagen also affected the thermal properties of the base.
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