Controlled Bimodal Molecular-Weight-Distribution Polymers: Facile Synthesis by RAFT Polymerization
作者:Jian Qin、Lifen Zhang、Hongjuan Jiang、Jian Zhu、Zhengbiao Zhang、Wei Zhang、Nianchen Zhou、Zhenping Cheng、Xiulin Zhu
DOI:10.1002/chem.201103914
日期:2012.5.7
The RAFT agents RAFT‐1 and RAFT‐2 were used for RAFT polymerization to synthesize well‐defined bimodal molecular‐weight‐distribution (MWD) polymers. The system showed excellent controllability and “living” characteristics toward both the higher‐ and lower‐molecular‐weight fractions. It is important that bimodal higher‐molecular‐weight (HMW) polymers and block copolymers with both well‐controlled molecular
RAFT试剂RAFT-1和RAFT-2用于RAFT聚合,以合成定义明确的双峰分子量分布(MWD)聚合物。该系统对较高和较低分子量的馏分均显示出极好的可控制性和“活性”特性。重要的是,由于RAFT聚合的“活性”特性,可以容易地制备分子量(MW)和MWD均受控的双峰高分子量(HMW)聚合物和嵌段共聚物。该策略实现了分子水平上较高/较低分子量聚合物的混合物,但还保留了RAFT聚合的活性自由基聚合(LRP)的功能。