【摘要】 在选择丙烯酸酯反相及双连续相微乳液聚合引发体系的基础上 ,对透明聚合产物的微观结构进行了分析比较。结果表明 ,反相微乳液体系选用AIBN为引发剂 ,聚合过程稳定 ,产物透明且呈闭孔结构 ;双连续微乳液体系采用高锰酸钾 草酸氧化还原引发剂 ,可以使聚合过程快速而稳定 ,得到透明的开孔型聚合物凝胶 ,并对高锰酸钾 草酸的引发机理作了进一步讨论。研究证实 ,在保持聚合过程相对稳定的前提下 ,微乳液聚合物凝胶与初始微乳液在结构上具有相似性。更多还原

【Abstract】 A series of initiator systems have been selected in order to realize the stable polymerization of acrylates in inverse or bicontinuous microemulsions. The micro-structures of transparent polymer prepared were analyzed. The results showed that transparent polymer gels with close-cell structure could be obtained by inverse microemulsion polymerization initiated with AIBN. Another transparent gels with open-cell structure could be obtained by bicontinuous microemulsion polymerization using potassium permanganate-oxalic acid redox system as initiator. The polymerization was fast and considerably stable using the redox initiator. The ESEM micrographs showed a certain relationship between the original structure of microemulsions and the structure of the polymer gels obtained. The mechanism of initiation reaction was discussed briefly.更多还原