涤纶纤维筒子染色过程中白色粉末性质的探讨  

A discussion on properties of white powders yielded during package dyeing of polyester yarns

作　　者：江渊[1] 潘菊芳[1] 廉志军[1] 徐憬 

机构地区：[1]中国纺织科学研究院生物源纤维制造技术国家重点实验室,北京100025 [2]绍兴中纺院江南分院有限公司,浙江绍兴312071

出　　处：《纺织学报》2010年第5期24-29,共6页Journal of Textile Research

基　　金：浙江省重大科技专项项目(2006C11157);北京市自然科学基金资助项目(2092028)

摘　　要：通过傅里叶变换红外光谱分析、核磁共振氢谱分析、热分析、凝胶色谱分析等现代分析技术手段,结合传统的溶解实验,对涤纶筒子纱染色过程中出现的"白色粉末"的化学组成、空间结构、结晶性能等进行系统研究。溶解实验结果表明,该"白色粉末"可溶于三氯甲烷,不溶于四氯化碳和乙醚。热分析实验结果表明,该"白色粉末"的熔融温度在319℃附近,而非普通聚酯PET的265℃附近。傅里叶变换红外光谱分析和核磁共振氢谱分析结果进一步推断,该"白色粉末"的主要成分是三元环结构聚对苯二甲酸乙二酯的低聚物。Modern analytical technologies such as FTIR spectroscopy,1H NMR,thermal analysis （DSC）,gel permeation chromatography （GPC） in combination with conventional dissolving experiment were used to carry out a systematic study on the properties of white powders yielded during package dyeing of polyester yarns.The chemical composition,stereo structure,and crystalline properties were investigated.The results of dissolving experiment show that the white powders can be dissolved in chloroform,but not in carbon tetrachloride and ethyl ether.The results of thermal analysis reveal that the melting temperature of the white powders is around 319 ℃,not around 265 ℃ as normal PET.The results of FTIR and 1H NMR study further deduce that the main composition of the white powders is cyclictrimer of polyethylene terephthalate oligomers.

关 键 词：PET聚酯(聚对苯二甲酸乙二酯)纤维 筒子纱染色 白色粉末 低聚物 

分 类 号：TS101.9[轻工技术与工程—纺织工程]