半芳族共聚酰胺合成及表征  

Synthesis and Characterization of Semi-aromatic Copolyamides

作　　者：尹红[1] 黄勇[1] 周贵阳 贾锦波 陈志荣[1] 袁慎峰[1] 邓杭军 YIN Hong;HUANG Yong;ZHOU Guiyang;JIA Jinbo;CHEN Zhirong;YUAN Shenfeng;DENG Hangjun(College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China;Zhejiang NHU Special Materials Co.,Ltd.,Shangyu 312369,China)

机构地区：[1]浙江大学化学工程与生物工程学院,浙江杭州310027 [2]浙江新和成特种材料有限公司,浙江上虞312369

出　　处：《材料科学与工程学报》2022年第1期1-5,10,共6页Journal of Materials Science and Engineering

基　　金：浙江省重点研发计划资助项目(2019C01103)。

摘　　要：采用低温溶液法制备不同链长的均聚酰胺、交替共聚酰胺和嵌段共聚酰胺,探究反应条件对聚酰胺序列结构的影响。结果表明,红外可定性区分半芳族及脂肪族聚酰胺,二胺链节中间碳原子的^(13)C-NMR化学位移和峰裂分情况可用于鉴别不同碳链长度的均聚酰胺、交替共聚酰胺及嵌段共聚酰胺。交替共聚酰胺PA6T/66、PA4T/46和PA3T/36特征碳原子的^(13)C-NMR化学位移分别为25.96、25.80和28.16。嵌段共聚酰胺特征碳原子出峰位移存在裂分,PA4T/46裂分位移最大。热重分析表明半芳族聚酰胺热分解温度高于脂肪族聚酰胺,碳链长度越长,热分解温度越高。The homopolyamides,alternating copolyamides and block copolyamides with different chain lengths were prepared by solution method at low temperatures,and the effect of reaction conditions on the sequences structure of polyamide was explored.The results show that infrared spectrum can distinguish semi-aromatic and aliphatic polyamides qualitatively.The ^(13)C-NMR chemical shift and peak splitting of the middle carbon atoms in the diamine chain can be used to identify homopolyamides,alternating copolyamides and block copolyamides with different carbon chain lengths.The ^(13)C-NMR chemical shifts of the characteristic carbon atoms of alternating copolyamides PA6T/66,PA4T/46 and PA3T/36 are 25.96,25.80 and 28.16,respectively.There is peak splitting for characteristic carbon atoms in block copolyamides,and PA4T/46 has the largest split.Thermogravimetric analysis shows that the thermal decomposition temperature of semi-aromatic polyamides is higher than that of aliphatic polyamides.The longer the carbon chain length is,the higher the thermal decomposition temperature.

关 键 词：共聚酰胺 序列结构 低温缩聚 构效关系 

分 类 号：O636[理学—高分子化学]