화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korea Polymer Journal, Vol.7, No.2, 124-129, April, 1999
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The Characterization of In-situ Graft Copolymer Formed in Polystyrene/Poly(methyl methacrylate-ram-glycidyl methacrylate) Blend with Mono-carboxylated Polystyrene as a Compatibilizer
Hyun Kyoung Jeon, and Jin Kon Kim†
  • Department of Chemical Engineering and Polymer Research Institute (PRI), Pohang University of Science and Technolog, Pohang, Kyungbuk 790-784, Korea
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The poly(methyl methacrylate)-graft-polystyrene (PMMA-g-PS) copolymer formed in situ from polystyrene(PS)/poly(methyl methacrylate-ran-glycidyl methacrylate) (PMMA-GMA) blend with monocarboxylated PS (PS-mCOOH) as an in-situ compatibilizer in molten state was characterized by using 1H-nuclear magnetic resonance spectroscopy and gel permeation chromatography. These analyses were done after the phase consisting of unreacted PMMA-GMA and PMMA-g-PS copolymer was successfully separated form the other phase consisting of PS and unreacted PS-mCOOH by solvent extraction. The copolymer concentration in total blend Ccopolymer(blend) increased linearly with the initially added amount a single PS-mCOOH chain was on the average grafted onto a single PMMA-GAM chain, although PMMA-GMA has 12 reactive sites per chain.
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