Controlled Synthesis of Block Copolymers containing N-isopropylacrylamide by Reversible Addition-Fragmentation Chain-Transfer (RAFT) Polymerization

被引：0

作者：

Vega-Rios, Alejandro ^{[1
]}

Licea-Claverie, Angel ^{[1
]}

机构：

[1] Inst Tecnol Tijuana, Ctr Grad & Invest, Tijuana 22414, BC, Mexico

来源：

JOURNAL OF THE MEXICAN CHEMICAL SOCIETY | 2011年 / 55卷 / 01期

关键词：

Block Copolymer; RAFT; poly(NIPAAm); poly(MMA); poly(HEMA); poly(St); LIVING RADICAL POLYMERIZATION; POLYMERS; WATER;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Synthesis of diblock copolymers of N-isopropylacrylamide with n-hexyl acrylate, styrene, methyl methacrylate and 2-hydroxy-ethyl methacrylate, were carried out by using a sequential "living" polymerization method in the presence of chain transfer agent (CTA) 4-Cyano-4-(phenylcarbonothioylthio) pentanoic acid. The block copolymer composition and molecular weight could be well controlled while maintaining a narrow molecular weight distribution. The block copolymers were characterized by H-1 NMR, GPC with MALLS detection and DSC. The molar ratio CTA/Initiator rather than the sequence of monomer addition is the key parameter for achieving the desired materials. We report the first synthesis of poly(HEMA)-b-poly(NIPAAm) with a polydispersity index (IPD) of 1.20 by RAFT.

引用

页码：21 / 32

页数：12

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