高等学校化学学报

高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (3): 485.

• 论文 • 上一篇    下一篇

聚芳醚酮单体结构与反应活性的研究

柯杨船, 封继康, 郑玉斌, 吴忠文, 姬相玲   

  1. 吉林大学化学系, 长春 130023
  • 收稿日期:1995-03-06 出版日期:1996-03-24 发布日期:1996-03-24
  • 通讯作者: 郑玉斌
  • 作者简介:柯杨船,男,30岁,博士研究生,讲师.
  • 基金资助:

    国家“863重大项目”基金

Research on Monomer Structures and Reactivity of Poly(aryl ether ketone)s

KE Yang-Chuan, FENG Ji-Kang, ZHENG Yu-Bin, WU Zhong-Wen, JI Xiang-Ling   

  1. Department of Chemistry, Jilin University, Changchun 130023
  • Received:1995-03-06 Online:1996-03-24 Published:1996-03-24

PDF (PC)

被引次数

8

摘要： 利用从头算RHF方法研究了聚芳醚酮单体4,4'-对苯二酚、4,4'-联苯二酚及4,4'-二氟苯酮。结果表明,它们的苯环皆存在一定的扭转。首次给出联苯二酚全优化结构,其苯环二面角为51.8°,活性稍强于对苯二酚,但引入了更多的链支化活性点。含联苯基聚芳醚醚酮的链支化比不含联苯基的PEEK严重,故前者结晶性差。反应机理及实验还表明:前者凝胶化的浓硫酸溶液中存在一种羰基被极化后的红色阴离子。

关键词: RHF计算, 聚芳醚酮单体, 二面角, 链支化活性点

Abstract: Monomers of poly(aryl ether ketone)s famiy, such as,4,4'-hydroquinone(PD),4,4'-biphenol(S3)and 4,4'-difluorine benzophenone have been researched by ab initio RHFmethod.Results obtained show that these monomers have different torques in their aromatic rings.S3 has a dihedral angle of 51.8°,its reactivity is a bit stronger than that of PD, but it introduced more active branching points.Thus, polymer DPEEKfrom S3 has more serious chain branching and is more difficult in crystallizing than PEEKfrom PD.And also, it is found that there is a kind of red negative ion in DPEEK solution of concentrated H2SO4.

Key words: Ab initio RHF calculation, Monomers of poly (aryl ether ketone)s, Dihedral angle, Chain branching

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