摘要
合成了一系列不同钕含量的聚(苯乙烯-丙烯酰胺)载体-氯化钕(PSAC·NdCl_3)络合物,并研究了 PSAC 中单体链节的序列分布与 PSAC·NdCl_3络合物催化丁二烯聚合活性的关系。结果表明,当丙烯酰胺链节短序列(n=1)分布和苯乙烯链节长序列(n 不小于25)分布都较高时,PSAC·NdCl_3络合物才具有最佳的催化活性。所得聚丁二烯的微观结构与 PSAC 中单体链节的序列分布无关。
A series of poly(styrene-acrylamide) (PSAC)supported neodymium complexes (PSAC·NdCl_3)with different contents of Nd were synthesized.The relationship between the sequence distribution of the monomeric units in the PSAC and thecatalytic activity of the PSAC·NdCl_3 was investigated.The PSAC·NdCl_3 had optimum catalytic activity only when the distributions of short se- quences of acrylamide units(n=1)and long sequences of styrene units(n≥25)were both higher.The microstructure of the polybuta- diene obtained had nothing to do with the distribution of the monomeric units in the PSAC.
出处
《合成橡胶工业》
CAS
CSCD
1997年第1期17-20,共4页
China Synthetic Rubber Industry
基金
国家自然科学基金
关键词
高聚物载体
金属络合物
稀土金属
络合物
butadiene
poly(styrene-acrylamide)
sequence distribution
polymer supported rare earth metal complex
rare earth catalyst
catalytic activity
polybutadiene
