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Influence of a core/shell rubber phase on the morphology and the impact resistance of a PC/SAN blend (75/25)
Author(s) -
Debier D.,
Devaux J.,
Legras R.,
Leblanc D.
Publication year - 1994
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760340802
Subject(s) - materials science , polycarbonate , natural rubber , composite material , izod impact strength test , morphology (biology) , acrylonitrile , copolymer , coalescence (physics) , shell (structure) , phase (matter) , microstructure , polymer blend , impact resistance , polymer , ultimate tensile strength , chemistry , genetics , physics , organic chemistry , astrobiology , biology
Abstract At 75/25 concentration ratio, bisphenol a polycarbonate (PC)/styreneacry‐lonitrile copolymer (SAN) blend has poor impact resistance compared to PC/ABS. A rubber phase methacrylate‐butadiene‐styrene (MBS) of core/shell type was dispersed in PC/SAN blend. The morphology of the unmodified and modified blend was investigated. The influence of the acrylonitrile ratio in the SAN on the microstructure was studied. It clearly shows that core/shell resides at the interface between PC and SAN. It seems that core/shell particles enhance the adhesion between the different phases. Their presence influences the interface mobility; i.e., the coalescence of the dispersed phase observed in pure PC/SAN is considerably reduced when the MBS particles are added. The impact resistance of the samples was correlated with the morphology.