Poly(phenylenediamine) Dispersions.
Poly(phenylenediamine) Dispersions.
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DOI：
10.1006/jcis.2000.7415
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发表时间：
2001-04
影响因子：
9.9
通讯作者：
T. Sulimenko;J. Stejskal;J. Prokeš
中科院分区：
文献类型：
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作者：
T. Sulimenko;J. Stejskal;J. Prokeš
研究了聚苯二胺胶体分散体的形成和性质。以聚N-乙烯基吡咯烷酮稳定的1，3-苯二胺盐酸盐氧化分散聚合为参比实验。在聚合过程中记录了反应混合物的电导率、温度和酸度。比较了所有三种苯二胺碱、相应的二盐酸盐以及二盐酸盐在过量酸中的氧化。空间稳定剂的性质对聚合过程的影响很小。观察到分散聚合比沉淀聚合进行得更快。用动态光散射法测定了聚苯二胺分散体的颗粒大小。讨论了与导致聚苯胺分散的苯胺的类似聚合有关的结果。学术出版社版权所有2001年。
The formation and properties of poly(phenylenediamine) colloidal dispersions were investigated. Oxidative dispersion polymerization of 1,3-phenylenediamine dihydrochloride stabilized with poly(N-vinylpyrrolidone) was taken as a reference experiment. Conductivity, temperature, and acidity of the reaction mixture were recorded during the polymerization. Oxidations of all three phenylenediamine bases, of corresponding dihydrochlorides, and of dihydrochlorides in excess acid are compared. The effect of the nature of steric stabilizer on the course of polymerization was found to be marginal. Dispersion polymerization was observed to proceed faster than the precipitation one. Dynamic light scattering was used to assess particle sizes in poly(phenylenediamine) dispersions. The results are discussed in relation to an analogous polymerization of aniline leading to polyaniline dispersions. Copyright 2001 Academic Press.