丁秀臣,陈蕾,于俊荣,诸静,胡祖明
DING Xiu-chen,CHEN Lei,YU Jun-rong,ZHU Jing,HU Zu-ming (State Key Laboratory for Modification of Chemical Fibers and Polymer Materials

• 1:东华大学纤维材料改性国家重点实验室

摘要(Abstract)：

通过测量不同条件下聚对苯二甲酰对苯二胺(PPTA)溶液的比浓对数黏度,分析在PPTA纺丝前可能引起聚合物降解的因素,这些因素包括纺丝液浓度、残余的CaCl2、N-甲基-2-吡咯烷酮、水分和氢氧化钙等,最终得到水分和氢氧化钙对PPTA的降解影响很大,其余影响较小的结论。同时,分析了降解前后聚合物的结构和性能,发现降解结果是部分端胺基被氧化成硝基。
The factors that may cause degradation of poly(p-phenylene terephthalamide)(PPTA) during preparation were studied by measuring the inherent viscosity.The degradation rate of PPTA was influenced by the factors such as procession time,spinning solution concentration,CaCl2 content in the spinning solution as well as 1-Methyl-2-pyrrolidinone(NMP),H2O and Ca(OH)2 in the spinning solution.The results showed that H2O and Ca(OH)2 had more effect on the degradation of PPTA than the others and some-NH2 was oxidated to-NO2.

关键词(KeyWords)： 聚对苯二甲酰对苯二胺;降解;比浓对数黏度
PPTA,degradation,inherent viscosity

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 丁秀臣,陈蕾,于俊荣,诸静,胡祖明
DING Xiu-chen,CHEN Lei,YU Jun-rong,ZHU Jing,HU Zu-ming (State Key Laboratory for Modification of Chemical Fibers and Polymer Materials

参考文献(References)：

• [1]陈稀,黄象安主编.化学纤维实验教程[M].纺织工业出版社,1988:50-57.
• [2]潘智存等.高分子量聚对苯二甲酰对苯二胺硫酸溶解热稳定性的研究[J].合成纤维工业,1989,12(3):34-36.
• [3]W.施纳贝尔著,陈用烈等译.聚合物降解原理及应用[M].化学工业出版社,1988:66-81.
• [4]张留城,李佐邦编.缩合聚合[M].北京:化学工业出版社,1986:261-274.
• [5]何曼君,陈维孝,董西侠编.高分子物理[M].上海:复旦大学出版社,1988:139-148.
• [6]Hayley A Every,Gaby J M,et al.Performance analysis of sulfonatedPPTA polymers as potential fuel cell membranes[J].Journal of PowerSources,2006,162:380-387.
• [7]沈德言.红外光谱法在高分子研究中的应用[M].科学出版社,1982.105-124.