Synthesis and characterization of block copolymer PS-b-PMMA with tetrafunctional initiator JWEB50

陈小祥

doi:10.3969/j.issn.0438-1157.2012.08.047

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Synthesis and characterization of block copolymer PS-b-PMMA with tetrafunctional initiator JWEB50

更新时间：2025-12-10

- Synthesis and characterization of block copolymer PS-b-PMMA with tetrafunctional initiator JWEB50
- CIESC Journal Issue 8, Pages: 2667-2671(2012)
- 作者机构：
  
  化学工程联合国家重点实验室，浙江大学化工系,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.08.047
  CLC：
- Online First：05 August 2012，
  
  Published：05 August 2012
- 稿件说明：
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陈小祥. Synthesis and characterization of block copolymer PS-b-PMMA with tetrafunctional initiator JWEB50[J]. CIESC Journal, 2012, (8): 2667-2671.
DOI：

陈小祥. Synthesis and characterization of block copolymer PS-b-PMMA with tetrafunctional initiator JWEB50[J]. CIESC Journal, 2012, (8): 2667-2671. DOI： 10.3969/j.issn.0438-1157.2012.08.047.

摘要

Abstract

With the aim of synthesis block copolymers by traditional free radical polymerization，a diblock copolymer，polystyrene-b-poly(methyl methacrylate)(PS-b-PMMA)，was prepared by free radical polymerization with a tetra-functional peroxide initiator JWEB50.The unique feature of this initiator is the fact that one initiator contains four peroxide groups which can be sequential decomposited.The polymerization of the formation of the block copolymer was carried out by two stages.First，the polymerization of styrene(St)using JWEB50 was investigated and the polystyrene with peroxide(PSI)was obtained，which was used in the second stage to initiate the second monomer，methyl methacrylate(MMA).Selective solvent extraction was used for separation of the block polymer from the homopolymers.The separation technique was found to be efficient by gel permeation chromatography(GPC).The block copolymer was characterized by gel permeation chromatography(GPC)，1H-nuclear magnetic resonance(1H NMR)，Fourier transform infrared spectrometer(FTIR).The results showed that the polystyrene-b-poly(methyl methacrylate)could be synthesised with JWEB50.The transmission electron microscope(TEM)analysis showed that the polymer could be used as the compatilizer to improve the compatibility of PS/PMMA blends.

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