| 基团转移聚合中分子量和分子量分布的研究 |
| |
| 引用本文： | 邹友思,潘容华.基团转移聚合中分子量和分子量分布的研究[J].高分子学报,1992,0(2):241-245. |
| |
| 作者姓名： | 邹友思 潘容华 |
| |
| 作者单位： | 厦门大学化学系，厦门大学化学系 厦门，邮政编码:361005，厦门，邮政编码:361005 |
| |
| 摘 要： | <正> 基团转移聚合的主要优点是能在室温下进行甲基丙烯酸酯、丙烯酸酯和丙烯腈等极性单体的控制聚合,得到实测分子量和理论分子量相近的、多分散指数较小的聚合物。对于每一种新发现的引发剂和催化剂组成的引发-催化体系,亦是在高转化率的前提下,视其实测分子量和理论分子量的相符程度和多分散指数的大小而评判其优劣。目前已报道的有关控制分子量及多分散指数的工作,大多限于研究催化剂含量的影响。而反应条
|
| 关 键 词： | 基因转移聚合 分子量 分子量分布 聚甲基丙烯酸酯 |
| 收稿时间： | 1990-12-13 |
THE CONTROL OF MOIECULAR WEIGHT AND LOW POLYDISPERSITY IN GROUP TRANSFER POLYMERIZATION |
| |
| ZOU You-si,PAN Rong-hua.THE CONTROL OF MOIECULAR WEIGHT AND LOW POLYDISPERSITY IN GROUP TRANSFER POLYMERIZATION[J].Acta Polymerica Sinica,1992,0(2):241-245. |
| |
| Authors: | ZOU You-si PAN Rong-hua |
| |
| Institution: | Department of Chemistry; Xiamen University; Xiamen; Post code: 361005 |
| |
| Abstract: | Group trahsfer polymerization of methacrylates with 1-trimethyl siloxy cyclohexene (TSCH), 1-(N,N-dimethyl amino)-1-trimethylsiloxy butene-1 (DMTB) and ethyl 2-ethyl-3-ethoxy-3-trimethyl siloxy acrylate (EETSA) as initiators, Bu4NH(C6H5CO2)2 and Et4NHF2 as catalysts was investigated. The dependence of the control of molecular weight and low po-lydispersity on the catalyst concentration, monomer/initiator ratio, reaction temperature, solvent, steric hindrance of methacrylates, the course of the reaction has been studied. Polydi-spersity decreases with decreasing of induction periods. When Et4NHF3 concentration is 0.008-0.012 mol/L, molecular weight control is good. |
| |
| Keywords: | Group transfer polymetrization Molecular weight polydispersity |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《高分子学报》浏览原始摘要信息 |
| 点击此处可从《高分子学报》下载免费的PDF全文 |
|
