文献类型：期刊文献

英文题名：Study on the "living/controlled'' radical emulsion polymerization of styrene with Cu0/Bpy/CCl4 and CuCl2/Bpy/AIBN systems

作者：Wan, XL; Ying, SK

机构：[1]E China Univ Sci & Technol, Lab Living Polymerizat, Shanghai 200237, Peoples R China

年份：2000

期号：1

起止页码：27

外文期刊名：ACTA POLYMERICA SINICA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000085450900006)】；

语种：英文

外文关键词：atom transfer radical polymerization; emulsion polymerization; complex catalyst; styrene

摘要：The emulsion polymerization of styrene by Cu-0/2, 2'-bipyridine (Bpy)/CCl4 and CuCl2/Bpy/azobisisobutyronitrile (AIBN) catalyst/initiator system was studied, respectively. The results show that the molecular mass increased in linear with the conversion of monomer, which hints the emulsion polymerization may be a "living/controlled'' system, and the incipient molecular mass, which are as 5 to 20 times as the theory one, may be up to 10, 000s once the polymerization was initiated. The polymer MWD from Cu-0/Bpy/CCl4 emulsion system accords with that from its bulk polymerization. Moreover, the MWD from CuCl2/Bpy/AIBN emulsion system is broader than that from its bulk polymerization, but the narrowest one in this emulsion system can reach 1.64. Essentially, no difference was found between emulsion and suspension polymerization in "living" character but in kinetics. It was found that the pH-value decreased in the course of polymerization, the descending rate of pH value may influence on polymerization rate.