Copolymerization of sec-butenyl acetate with styrene via emulsion polymerization
Copolymerization of sec-butenyl acetate with styrene via emulsion polymerization
复制标题
乙酸仲丁烯酯与苯乙烯乳液聚合共聚
DOI：
10.1002/pola.22069
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
S. Morgan
中科院分区：
文献类型：
--
作者：
Alp H. Alidedeoglu;S. Dutta;R. Misra;J. W. Rawlins;S. Morgan
将烯丙基单体引入高反应性乙烯基聚合提供了控制分子量、转化率和Trommsdorff效应以产生具有所需性能特征的共聚物的手段。研究了苯乙烯与醋酸仲丁烯酯的共聚行为，其共聚性能未见报道。通过连续乳液聚合制备共聚物，并通过NMR、凝胶渗透色谱、差示扫描量热法、动态光散射和原子力显微镜进行表征。正如预期的那样，观察到由于烯丙基氢离子导致的高度链终止，导致分子量和单体转化率降低。然而，实现了高转化率，并且可以将高百分比的烯丙基乙酸酯共聚单体掺入聚合物链中。共聚物的热性能的报告。
The incorporation of allylic monomers into highly reactive vinyl polymerizations provides a means to control molecular weight, conversion, and Trommsdorff effect to produce copolymers with desirable performance characteristics. The copolymerization behavior of styrene with sec-butenyl acetate, whose copolymerization properties have not been reported, is investigated. Copolymers were produced via semicontinuous emulsion polymerization and characterized via NMR, gel permeation chromatography, differential scanning calorimetry, dynamic light scattering, and atomic force microscopy. A high degree of chain termination due to allylic hydrogen ion was observed, as expected, with resultant decreases in molecular weight and in monomer conversion. However, high conversions were achieved, and it was possible to incorporate high percentages of the allylic acetate comonomer into the polymer chain. Copolymer thermal properties are reported.