聚酰胺热塑性弹性体的热致转变  

Temperature-Dependent Transitions of Thermoplastic Polyamide Elastomer

作　　者：李楚新[1] 刘曦非[2] 周涛[2] 罗犟 张爱民[2] 

机构地区：[1]中国石化巴陵石油化工有限责任公司,湖南岳阳414014 [2]高分子材料工程国家重点实验室,四川大学高分子研究所,四川成都610065

出　　处：《高分子材料科学与工程》2013年第8期28-33,共6页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51003066);四川大学优秀青年基金(2011SCU04A13)

摘　　要：借助于移动窗口二维相关红外光谱对聚合物分子微观级别热运动的优势,对聚酰胺弹性体的热致转变行为的分子运动机理和相转变过程进行了研究,并利用其它相关的表征手段(差示扫描量热分析(DSC)和原子力显微镜(AFM))对结果做出验证。聚酰胺弹性体的熔融转变依赖于硬段晶区、过渡区域中不完整晶区的熔融热。在不同温度的热致转变过程中,硬、软段的活动秩序有所区别,其区别由转变温度所控制。Through the move window two-dimensional correlation infrared spectroscopy which is sensitive to the micro-level thermal motion of the polymer chains,the research for the mechanism of the thermotropic changes behavior and phase transition of the thermal motion of the thermoplastic polyamide elastomer was carried out.The relevant characterization methods（such as DSC,AFM） were used to confirm the results.The melt transition of the thermoplastic polyamide elastomer depends on the melting heat of the hard segment crystallization zone and the uncompleted crystal region of the transition zone.There are differences between the activity order of the hard and soft segments during the thermotropic transformation changes at the different temperatures,which are controlled by the transition temperature.

关 键 词：聚酰胺弹性体 二维相关红外光谱 热致转变 

分 类 号：TQ334[化学工程—橡胶工业]