波谱学杂志 ›› 1996, Vol. 13 ›› Issue (3): 219-230.

• 研究论文 • 上一篇    下一篇

聚芳醚酮链扩展单体及单分散齐聚物的分子结构研究

柯扬船1, 华士英2, 郑玉斌1, 张善举1, 吴忠文1   

  1. 1. 吉林大学化学系, 长春 130023;
    2. 吉林大学理论化学研究所, 长春 130023
  • 收稿日期:1995-09-25 修回日期:1995-11-26 出版日期:1996-06-05 发布日期:2018-01-17
  • 基金资助:
    国家"863"重大项目课题

MOLECULAR STRUCTURE OF CHAIN-EXTENDED MONOMERS AND MONO-DISPERSE OLIGOMERS FOR POLY(ARYL ETHER KETONE)S BY 13C NMR AND CALCULATION

Ke Yangchuan1, Hua Shiyin2, Zhen Yubin1, Zhaug Shanju1, Wu Zhongwen1   

  1. 1. Department of Chemistry, Jinlin University, Changchun 130023;
    2. Institute of Theoretical Chemistry, Jinlin University, Changchun 130023
  • Received:1995-09-25 Revised:1995-11-26 Online:1996-06-05 Published:2018-01-17

摘要: 为了全面表征聚芳醚酮齐聚物及高聚物分子结构,本文合成了系列链扩展单体及单分散齐聚物,以13C NMR对其在DMSO-d6(或DMSO-d6+CDCl3),及H2SO4-d2(或H2SO4)中进行对比研究,表明:它们溶于H2SO4时,分子结构发生明显极化.量子化学计算及动态13C NMR研究表明,极化是H2SO4的正极性磺酸基诱导分子链的氧原子电荷进而诱导芳环电子离域产生的,而非磺化所致.说明极化有普遍意义并提出标题化合物的极化方式,其实际意义明确.

关键词: 聚芳醚酮链扩展单体, 单分散齐聚物, 分子极化, 13C NMR, 量子化学计算

Abstract: To Characterize the molecular structure of oligomers and polymers of Poly(aryl ether ketone)s family,this paper presents a series of Chain-extended monomers and mono-dispersed Oligomers.The comparison researches on these compounds dissolved in DMSO-d6(or DMSO-d6+CDCl3) and H2SO4-d2(or H2SO4) are made by 13C NMR method.Results show that, in H2SO4, their molecular structures are greatly polarized.Results from quantum mechanical calculation and dynamic 13C NMR show that this polarization results from the charge unlocalization of bridge-bonds and aryl-rings in molecular chain induced by sulfo-group of H2SO4,but not from the reaction of sulfo-group.The Polarization route for the titled compounds are firstly suggested.

Key words: Chain-extended monomers and monodispersed oligomers of poly (aryl ether ketone)s, Molecular polarization, 13C NMR, Quantum mechanical calculation