聚苯胺
聚合物
亚胺
氢键
凝胶渗透色谱法
化学
高分子化学
胺气处理
分子
氧化态
光化学
化学工程
有机化学
聚合
催化作用
工程类
作者
W. Zheng,Marie Angelopoulos,A.J. Epstein,A. G. MacDiarmid
出处
期刊:Macromolecules
[American Chemical Society]
日期:1997-05-01
卷期号:30 (10): 2953-2955
被引量:220
摘要
Aggregation in the nondoped polyaniline, emeraldine base (EB), as observed by GPC in a N-methyl-2-pyrrolidinone (NMP) solution, was found to be closely related to the fraction of the imine nitrogen atoms in the nondoped polymer, i.e., to the oxidation state of the polymer. As EB was reduced to leucoemeraldine base (LEB), the degree of aggregation was significantly reduced. The results of gel permeation chromatography (GPC) and infrared studies suggest that the aggregation of the polymer is due to interchain hydrogen bonding between the imine and amine nitrogen sites on adjacent polymer molecules. The degree of hydrogen bonding and, thus, aggregation found in the polymer is greatly affected by solvents, LiCl, and the oxidation state of the polymer.
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