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离子交联聚氯乙烯的结构与性能
引用本文:包永忠,黄志明,翁志学,潘祖仁.离子交联聚氯乙烯的结构与性能[J].高等学校化学学报,1999,20(2):299-303.
作者姓名:包永忠  黄志明  翁志学  潘祖仁
作者单位:浙江大学高分子科学与工程研究所,杭州,310027
摘    要:由氯乙烯/丙烯酸悬浮共聚合成了不同羧基含量的PVC树脂,采用溶液反应和熔融加工法制备离子交联PVC。对其结构和性能进行了研究。结果表明,共聚物中羧基主要以二聚体形式存在,用金属离子中和能形成部分络合结构;用Ca^2+、Mg^2+离子络合的羧基含量较高的VC/AA共聚物存在离子对聚集态结构;离子对含量、金属离子种类和增塑剂浓度影响离子聚集相的比例和稳定性,离子聚集具有热可逆性,离子交联使PVC的Tg

关 键 词:聚氯乙烯  离子交联  离子对聚集态

Structure and Property of Ionic Crosslinked Poly(vinyl chloride)
BAO Yong-Zhong,HUANG Zhi-Ming,WENG Zhi-Xue,PAN Zu-Ren.Structure and Property of Ionic Crosslinked Poly(vinyl chloride)[J].Chemical Research In Chinese Universities,1999,20(2):299-303.
Authors:BAO Yong-Zhong  HUANG Zhi-Ming  WENG Zhi-Xue  PAN Zu-Ren
Abstract:PVC containing different contents of carboxylic group was synthesized by \{VC/AA\} suspension copolymerization and then ionic crosslinked PVC was prepared by solution and melting processing in the presence of metal salt. The structure and properties of ionic crosslinked PVC were investigated. It was shown that carboxylic group in copolymer existed in dimer form, and was partially coordinated with metal cation after neutralization. \{VC/AA\} copolymer with higher AA content and neutralized with Ca2+, Mg2+ cations tended to form thermal\|reversible ionic pair aggregation structure. The content and stability of ionic pair aggregation phase were affected by ionic pair content and type of metal cation. \%T\%\-g, melting viscosity and elasticity of PVC increased as ionic crosslinking was introduced.
Keywords:Poly(vinyl chloride)    Ionic crosslinking    Ionic pair    aggregation\=  
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