高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (12): 1944.

• 论文 • 上一篇    下一篇

高T_g可溶含偶氮三嗪染料基团的侧链型共聚聚酰亚胺的合成与表征

隋郁, 郭晓霞, 印杰, 刘燕刚, 高剑, 朱子康, 黄德音, 王宗光   

  1. 上海交通大学化学化工学院, 上海 200240
  • 收稿日期:2000-01-21 出版日期:2000-12-24 发布日期:2000-12-24
  • 通讯作者: 印　杰(1964年出生)男,博士,教授,主要从事功能高分子领域的研究工作.
  • 基金资助:

    上海市科委新材料研究中心重点基金(批准号:97JC14014);上海交通大学青年基金资助

Synthesis and Characterization of High TgOrgano-Soluble Side-Chain Copolyimides Containing a Triazine-Azo Chromophore

SUI Yu, GUO Xiao-Xia, YIN Jie, LIU Yan-Gang, GAO Jian-ZHU, Zi-Kang, HUANG De-Yin, WANG Zong-Guang   

  1. School of Chemistry and Chemical Technology, Shanghai Jiaotong University, Shanghai 200240, China
  • Received:2000-01-21 Online:2000-12-24 Published:2000-12-24

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被引次数

19

摘要： 采用两步法合成了两个系列侧链含新型偶氮三嗪染料发色团的共聚聚酰亚胺OPI(x)和PPI(x).用红外光谱、紫外-可见光谱、DSC和TGA等手段对其进行表征.它们均溶于强极性非质子溶剂,如NMP,DMAc,DMF,DMSO和1,4-丁内酯等.其截止吸收波长小于500nm,在大于500nm波长范围内基本透明.这些共聚物的特性粘数在0.25～0.50dL/g范围内.它们都表现出较高的玻璃化转变温度(Tg).以刚性相对较大的均苯四甲酸二酐(PMDA)为二酐单体的PPI(x)的Tg在573K左右;以二苯醚-3,3′,4,4′-四甲酸二酐(OPDA)为单体的OPI(x)的Tg在533～543K之间,且基本与染料发色团含量无关.所有的共聚聚酰亚胺都表现出优良的高温稳定性,其5%热失重温度比相应聚合物的Tg高100K以上

关键词: 共聚聚酰亚胺, 三嗪类偶氮染料发色团, 侧链型, 高Tg

Abstract: Two series of copolyimides, OPI( x ) and PPI( x ), containing a triazine azo chromophore were prepared by a two step process, which includes a solution polycondensation followed by a chemical imidization.The copolyimides obtained were characterized by FTIRspectroscopy, UV-Vis spectroscopy, DSCand TGA.The obtained copolyimides are soluble in aprotic organic solvents such as N-methyl-2-pyrrolidone(NMP), N,N-dimethyl acetamide(DMAc), N,N-dimethyl formamide(DMF), dimethylsulfone (DMSO) and1,4-butyrolactone.They are almost completely transparent at wavelengths greater than500 nm.The intrinsic viscosities of OPI( x ) and PPI( x ) are in the range0.25-0.50 dL/g.All copolyimides possess high Tg and thermal stability.Tgs are about573 Kfor copolyimides based on pyromellitic dianhydride(PMDA) and533-543 Kfor those based on 3,3′,4,4′ diphenylethertetracarboxylic dianhydride(OPDA) and are almost independent of the chromophore loading level.The5% weight loss temperatures of the copolyimides are more than100 Khigher than the corresponding Tgs and this high thermal stability would ensure high temperature poling of the copolyimides

Key words: Copolyimide, Triazine-azo chromophore, Side-chain, High Tg

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