Journal of Adhesion and Interface (접착 및 계면)

The Society of Adhesion and Interface, Korea (한국접착및계면학회)
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Synthesis and Characterization of Poly(Urethane-Methyl methacrylate) Hybrid Emulsion as a Plastic Coating Resin

플라스틱 코팅용 Poly(Urethane-MMA) 혼성 에멀젼 합성 및 특성 연구

  • Yeom, Ji-Yoon (Department of Chemical Engineering, Yonsei University) ;
  • Baek, Kyung-Hyun (Department of Chemical Engineering, Yonsei University) ;
  • Lee, Jun-Young (Department of Chemical Engineering, Yonsei University) ;
  • Yi, Gyoung-Bae (Technical Research Institute, Hanjin Chemical Company) ;
  • Yoo, Byung-Won (Technical Research Institute, Hanjin Chemical Company) ;
  • Kim, Jung-Hyun (Department of Chemical Engineering, Yonsei University)
  • 염지윤 (연세대학교 화학공학과 기능성초미립자공정연구실) ;
  • 백경현 (연세대학교 화학공학과 기능성초미립자공정연구실) ;
  • 이준영 (연세대학교 화학공학과 기능성초미립자공정연구실) ;
  • 이경배 (한진화학주식회사 기술연구소) ;
  • 유병원 (한진화학주식회사 기술연구소) ;
  • 김중현 (연세대학교 화학공학과 기능성초미립자공정연구실)
  • Received : 2006.09.18
  • Accepted : 2006.11.01
  • Published : 2007.03.30
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Abstract

Poly(urethane-methyl methacrylate) hybrid emulsions can be controlled with their thermal, mechanical and anti-chemical properties as plastic coating materials. In this study, water dispersed poly(urethane-methyl methacrylate) hybrid emulsions were prepared by prepolymer synthesis and soap free emulsion polymerization. For imparting hydrophilicity on polyurethane prepolymer, 2,2-bis (hydroxymethyl) propionic acid was added to the polyurethane prepolymer with methyl methacrylate monomer and was neutralizated by triethylamine (TEA). After neutralization, the prepolymer mixture was dispersed in the water phase with stable droplets. The synthesis was carried out with chain extension from the ethylene diamine and initiation of methyl methacrylate by soap free emulsion polymerization. Stable poly(urethane-methyl methacrylate) hybrid emulsion was successfully obtained with different synthetic conditions and acrylic monomer contents. Poly(urethane-methyl methacrylate) hybrid emulsion were characterized and compared with tensile strength, viscosity, and adhesion properties.

폴리우레탄에 아크릴기가 도입된 poly(urethane-methyl methacrylate) 혼성 에멀젼 코팅 수지는 플라스틱 코팅 수지로써 열적, 기계적 물성 및 내화학성을 제어할 수 있다. 이에 본 연구에서는 프리폴리머 혼합 공정과 무유화 중합 방법을 이용하여 수분산된 poly(urethane-methyl methacrylate) 혼성 에멀젼을 합성하였다. 즉, 폴리우레탄 프리폴리머 합성 단계에서 2,2-bis (hydroxymethyl) propionic acid (DMPA)을 투입하고 methyl methacrylate (MMA) 단량체를 투입한 후, triethylamine (TEA)을 이용하여 DMPA의 카르복실기를 중화시켜 친수성기를 도입하였다. 이를 수분산시켜 안정한 액적을 형성시킨 후, 사슬연장 및 무유화 중합 방법에 의해 합성반응을 진행하였다. 이때 제조공정 조건 및 아크릴계 단량체의 함량을 달리하여 poly(urethane-methyl methacrylate) 혼성 에멀젼의 다양한 샘플을 얻으며, 수분산 샘플의 물성(인장강도, 점도, 부착성 등) 및 코팅필름의 특성을 평가 비교하였다.

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