高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (9): 1587.

• 研究论文 • 上一篇    下一篇

三元共聚脲序列分布及二胺反应活性比的研究

杜竹玮, 连彦青, 王晓工, 周其庠, 刘德山   

  1. 清华大学化学工程和材料科学与工程研究院, 北京 100084
  • 收稿日期:2000-12-14 出版日期:2001-09-24 发布日期:2001-09-24
  • 通讯作者: 刘德山(1941年出生),教授,博士生导师,主要从事功能高分子研究.Emai:hxh-dce@mai.ltsinghua.edu.cn E-mail:hxh-dce@mai.ltsinghua.edu.cn

Studies on Sequence Distribution of Copolyureas and Relationship of Diamines Reactivity Ratio

DU Zhe-Wei, LIAN Yan-Qing, WANG Xiao-Gong, ZHOU Qi-Xiang, LIU De-Shan   

  1. Department of Chemical Engineering and School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
  • Received:2000-12-14 Online:2001-09-24 Published:2001-09-24

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被引次数

3

摘要： 以己二胺(HDA)、间苯二胺(MPD)、4,4'-二氨基二苯醚、4,4'-二氨基二苯甲烷、4,4'-二氨基二苯砜及2,4-甲苯二异氰酸酯为原料,合成了一系列三元共聚脲,以三元共聚序列结构分析的理论为基础,建立了一套普适性较强的利用核磁氢谱分析和计算机分峰处理,研究三元共聚脲在不同反应条件下的序列结构方法,计算了无规度B值和链段序列长度Lna与Lnb.定量关联了不同反应条件下二胺单体间的反应活性比.结果表明,二胺单体间的反应活性比随反应条件的变化而变化

关键词: 聚脲, 序列结构, 反应活性比, 1HNMR

Abstract: Aseries of copolyureas were synthesized by using1,6-hexanediamine(HAD), m-phenylenediamine(MPD), 4-aminophenyl ether(DDE), 4,4'-diaminodiphenyl methane(DDM), 4,4'-diaminediphenyl sulfone(DDS) and 2,4-tolyene diisocyanate(TDI). Based on the theory of sequence distribution of copolymers, a method was established which determined the sequence distribution parameters: random degree Band number average sequence length Lna and Lnb by 1H NMRspectra and a computer program for the resolution of overlapping peaks. And the reactivity ratio of diamines with 2,4 TDIwas obtained based on the data. The result was that the diamine reactivity ratio changed in different reacting conditions.

Key words: Polyureas, Sequence distribution, Reactivity ratio, 1H NMR

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