화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.25, No.5, 526-530, October, 2014
Export Citation
분산중합에 의한 폴리스티렌-폴리에테르이미드 코어-셀 입자의 합성
Preparation of Polystyrene-Polyetherimide Core-Shell Particles by Dispersion Polymerization
안병현†
  • 부경대학교 재료공학과
Byung Hyun Ahn†
  • Department of Material Engineering, Pukyong National University, Pusan 608-739, Korea
E-mail:
초록
2,2’-Bis[4-(3,4-dicarboxyphenoxy) phenyl]propane dianhydride와 3,5-diamniobenzoic acid의 반응에 의해 얻어진 폴리에테르아미드산을 안정제로 사용하여 스티렌을 분산중합하여 폴리스티렌-폴리에테르아미드산 코어-셀 입자를 얻었다. 폴리에테르아미드산의 결합 효율을 증가시키기 위하여 4-vinylbenzyltrimethylammonium chloride를 공단량체로 사용하였다. 에탄올-물(7 : 3) 혼합용액을 반응매질로 사용했을 때 입자의 안정성 가장 높았고 입자의 크기도 비교적 균일하였다. 폴리스티렌-폴리에테르아미드산 코어-셀 입자의 크기는 스티렌의 양에 비례하여 증가하였다. Dimethylformamide- 물 혼합용액에서 중합한 경우에는 입자의 크기 분포가 넓어졌다. 폴리스티렌-폴리에테르아미드산 코어-셀 입자의 셀을 화학적으로 이미드화 하여 폴리스티렌-폴리에테르이미드 코어-셀 입자로 변환시켰다.
Polystyrene-poly(etheramic acid) core-shell particles were prepared by dispersion polymerization of styrene using poly(etheramic acid) obtained by the reaction of 2,2’-bis[4-(3,4-dicarboxyphenoxy) phenyl]propane dianhydride and 3,5-diamniobenzoic acid as a stabilizer. 4-Vinylbenzyltrimethylammonium chloride was used as a comonomer to increase the binding efficiency of poly(etheramic acid). When the ethanol-water mixture (7 : 3) was used as a reaction medium, particles were stabilized well and the size distribution of particles was fairly narrow. The particle size increased with the amount of styrene. The particles polymerized in the dimethylformamide-water mixture had a broad size range. Polystyrene-poly(etheramic acid) core-shell particles were transformed to polystyrene-polyetherimide core-shell particles by the chemical imidization of shells.
Keywords:polystyrene-polyetherimide core-shell particle;dispersion polymerization;4-vinylbenzyltrimethylammonium chloride
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