COMPATIBILIZATION OF PC/ABS BLENDS USING AN AMINE FUNCTIONAL SAN

摘要

An amine functional styrene-acrylonitrile (SAN-amine) polymer is proposed as a reactive compatibilizer for bisphenol-A-polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) blends. This polymer should be miscible with the styrene/acrylonitrile (SAN) copolymer matrix of ABS materials, and the pendant secondary amine groups should react with PC at the carbonate linkage to form a SAN-g-PC copolymer at the PC/ABS interface. The copolymer molecules should provide improved morphological stability by suppressing phase coalescence. This paper describes the synthesis of this reactive compatibilizer and its reaction with carbonate units. Characterization of this reaction was done by NMR and GPC. The morphology of compatibilized and uncompatibilized PC/SAN blends was examined by TEM.