Synthesis and characterization of poly(styrene-b-methyl methacrylate) block copolymers via ATRP and RAFT

Year 2019, Volume: 9 Issue: 1, 139 - 149, 01.03.2019

Melahat Göktaş

https://doi.org/10.21597/jist.435934

Cited By: 9

Abstract

Well-defined block copolymers of styrene (S) and methyl methacrylate (MMA) poly(Styrene-b-methyl methacrylate) [poly(S-b-MMA)] with narrow molecular weight distribution were synthesized via atom transfer radical polymerization (ATRP) and recycle additive fragmentation chain transfer (RAFT) polymerization methods using macro RAFT macroinitiator in two step. Poly-S based RAFT macroinitiator was reported from the reaction of potassium salt of ethyl xanthegonate and homo Poly-S which is synthesized by atom transfer radical polymerization of styrene using 3-chloro-1-propanol initiator. Subsequently, the synthesis of poly(S-b-MMA) block copolymers were acquired via RAFT of poly-S based RAFT macroinitiator and MMA at 90 0C. Poly(S-b-MMA) block copolymers were comparatively acquired in high yield and high molecular weight. The characterization of homo poly-S, RAFT macroinitiator, and poly(S-b-MMA) block copolymers were carried out by nuclear magnetic resonance spectroscopy, fourier transform infrared spectroscopy, gel permeation chromatography, thermogravimetric analysis and elemental analysis.

Keywords

ATRP, RAFT macroinitiator, block copolymer, methyl methacrylate, styrene

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