The Korean Journal of Rheology (유변학)

The Korean Society of Rheology (한국유변학회)
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Evolution of Phase Morphology During Compounding of Ternary Blends in a Twin Screw Extruder

이축 압출기를 이용한 혼련에서 삼성분계 블렌드의 상구조 형성과정

  • Kim, Hyungsu (Department of Chemical Engineering, College of Engineering, Dankook University) ;
  • Lee, Shi-Choon (R&D Center, Chemicals Division, Samsung Chemical Group) ;
  • D .Y. Yu (Polymer Processing Institute at Stevens Institute of Technology) ;
  • C. G. Gogos (Polymer Processing Institute at Stevens Institute of Technology)
  • Published : 1998.12.01
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Abstract

The morphological changes during melt compounding of ternary blends containing various combinations of acrylonitrile-butadiene-styrene(ABS), methyl methacrylate-butadiene-ethyl acrylate(MBE), styrene-acrylonitrile(SAM) copolymers, and poly(methyl methacrylate)(PMMA) as dispersed components in a fixed matrix of polycarbonate(PC) have been investigated. Depending on the composition of the blend, MBE particles and PMMA phase appear to locate at the PC-SAN interface under the influence of interfacial tensions and motion induced coalescence. The interfacial viscosity is found to be a critical factor that affects the amount of coalescence.

이축 압출기에서 삼성분계 블렌드가 용융 혼련될 때 상구조의 형성과정에 대하여 연구하였다. 삼성분계 블렌드의 연속상은 polycarbonate(PC)로 고정하였고 나머지 분산상을 이루는 성분으로는 acrylonitrile-butadiene-styrene(ABS), methyl methacrylate-butadiene-ethyl acrylate(MBE), styrene-acrylonitrile(SAM) 공중합체, 그리고 poly(methyl methacrylate)(PMMA)를 사용하였다. 블렌드의 여러 가지 조성에 따라 최종 상구조는 현저한 차이를 보였고 특히 MBE와 PMMA의 경우는 각각 PC-SAN의 계면에 선택적으로 위치하였다. 삼성분계 고분자 블렌드의 상구조 형성과정은 성분간의 계면장력과 합체 현상의 상호 작용에 의하여 지배되었으며 합체의 정도는 계면에서의 점도에 의하여 민감하게 변화되었다.

Keywords

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