화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korea-Australia Rheology Journal, Vol.18, No.1, 1-8, March, 2006
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PC/ASA blends having enhanced interfacial and mechanical properties
M. S. Kang, C. K. Kim†, and J. W. Lee1
  • School of Chemical Engineering & Materials Science, Chung-Ang University, 221 Huksuk-Dong, Dongjak-Gu, Seoul 156-756, Korea
  • 1Department of Chemical Engineering, Sogang University, Seoul 100-611, Korea
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Blend of bisphenol-A polycarbonate (PC) and (acrylonitrile-styrene-acrylic rubber) terpolymer (ASA) having excellent balance in the interfacial properties and mechanical strength was developed for the automobile applications. Since interfacial adhesion between PC and styrne-acrylonitrile copolymer (SAN) matrix of ASA is not strong enough, two different types of compatibilizers, i.e, diblock copolymer composed of tetramethyl polycarbonate (TMPC) and SAN (TMPC-b-SAN) and poly(methyl methacrylate) (PMMA) were examined to improve interfacial adhesion between PC and SAN. TMPC-b-SAN was more effective than PMMA in increasing interfacial adhesion between PC and SAN matrix of ASA (or weld-line strength of PC/ASA blend). When blend composition was fixed, PC/ASA blends exhibited similar mechanical properties except impact strength and weld-line strength. Impact strength of PC/ASA blend at low temperature was influenced by rubber particle size and its morphology. PC/ASA blends containing commercially available PMMA as compatibilizer also exhibited excellent balance in mechanical properties and interfacial adhesion.
Keywords:polycarbonate;(acrylonitrile-co-styrene-co-acrylic rubber) terpolymer;interfacial strength;impact strength;morphology
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