乙基纤维素修饰PET纤维的结晶性能  

Crystallization Behaviors of Poly(Ethylene Terephthalate) Fibres Surface-Modified by Ethyl Cellulose

作　　者：董知之[1] 张志英[1] 陈莉[1] 王曙光[1] 印明明[1] 

机构地区：[1]天津工业大学材料化工学院,改性与功能纤维天津市重点实验室,天津300160

出　　处：《高分子材料科学与工程》2009年第2期81-84,共4页Polymer Materials Science & Engineering

基　　金：天津市科技发展计划项目(06TXTJJC14400);天津市科技攻关计划重大项目(05YFGDGX10000);天津工业大学“重中之重”人才配套项目(20060526)

摘　　要：采用乙基纤维素对拉伸后的聚对苯二甲酸乙二酯纤维(PET)进行表面修饰,研究PET纤维被修饰后的结晶行为。在差示扫描量热仪(DSC)上进行非等温实验,发现未修饰PET纤维的结晶峰尖锐且峰值高,而修饰后PET纤维的结晶峰变宽、变小;随着拉伸比的增加,未修饰PET纤维的结晶峰变化不明显,而修饰后的PET纤维,随着拉伸比的增加,结晶峰峰位逐渐向低温方向移动。修饰后PET纤维的过冷程度、结晶最快时间和结晶半时间均大于未修饰PET纤维,表明表面修饰后的PET纤维结晶速率较慢。The confined crystallization behavior of poly （ethylene terephthalate） （PET） fibers surface-modified by ethyl cellulose at different draw ratios was studied using differential scanning calorimetry（DSC）. The non-isothermal DSC curves show that the peak of crystallization of normal PET fibers is sharp and has a higher peak value. The peak width of surface-modified PET fibres increases and has a smaller peak value. With the increase of the drawn ratio, the change of the peak of the normal PET fibers is unconspieuous and the peak of crystallization shifts to lower temperature after the PET fibers was surface-modified. The values of supercooling degree, maximum crystallization time, and crystallization half time of surface-modified PET fibers are all bigger than those of the normal PET fibers. All results show that the crystallization of surface-modified PET fibers is slower.

关 键 词：表面修饰 聚对苯二甲酸乙二酯纤维 结晶 受限 

分 类 号：TQ342.21[化学工程—化纤工业]