摘要
水溶性聚合物在工业、农业、医药等领域都有着广泛用途,但随着近年对水溶性聚合物精细化的要求,寻找新的结构可控的聚合方法已成为迫切需求。由于可逆加成—断裂链转移(RAFT)自由基聚合具有适用单体范围广、反应条件温和、不受聚合方法的限制等优点,以及可控制聚合物的嵌段、接枝、梳型、星型、无规及梯度等结构,成为合成结构可控的水溶性聚合物的最有效手段之一。本文主要讨论了单体、引发剂、链转移剂、溶剂等组成对RAFT聚合反应的影响,并介绍了利用RAFT方法制备非离子、阴离子、阳离子及两性离子水溶性聚合物的实例。
Water-soluble polymers have been widely used in industry, agriculture and medicine. However, novel techniques with structural controllability are demanded to meet the requirements to develop water-soluble polymers with controllable molecular architecture, controllable molecular weight, as well as narrow molecular weight distribution. Reversible addition-fragmentation chain transfer （RAFT） polymerization appears to be one of the most promising techniques to satisfy these criteria. Presented in this paper are the characteristics of RAFT, parameters influencing RAFT for preparing water-soluble polymers, such as monomers, initiator, chain transfer agent, solvent, and detailed examples of water-soluble polymers prepared by RAFT.
出处
《高分子通报》
CAS
CSCD
北大核心
2009年第2期64-70,共7页
Polymer Bulletin
基金
四川省青年科技基金(07ZQ026-122)
关键词
可逆加成-断裂链转移自由基聚合(RAFT)
水溶性聚合物
活性自由基聚合
结构可控
Reversible addition-fragmentation chain transfer （RAFT）
Water-soluble polymers
＂Living＂ radical polymerization
Narrow molecular weight distribution
