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Mechanical and thermal behavior of poly(acrylonitrile‐butadiene‐styrene)/polycarbonate blends reinforced with potassium titanate whiskers
Author(s) -
Tjong S. C.,
Jiang Wei
Publication year - 1999
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.10398
Subject(s) - materials science , whisker , composite material , whiskers , polycarbonate , ultimate tensile strength , acrylonitrile butadiene styrene , dynamic mechanical analysis , thermogravimetric analysis , izod impact strength test , chemical engineering , polymer , engineering
Poly(acrylonitrile‐butadiene‐styrene) (ABS)/polycarbonate (PC) blends reinforced with potassium titanate (K 2 Ti 6 O 13 ) whiskers were prepared in a twin screw extruder followed by injection molding. The whiskers were pretreated with tetrabutyl orthotitanate prior to compounding. The tensile, dynamic mechanical, impact, morphology and thermal properties of the blends were studied. Tensile tests showed that the modulus of ABS/PC/K 2 Ti 6 O 13 blend increased markedly with increasing whisker content. However, the variation of the modulus of ABS/PC/K 2 Ti 6 O 13 blend with PC content followed a sigmoidal relation. In addition, the tensile strength of the blends containing 20 wt% PC tended to increase markedly with increasing whisker content. But the impact strength of the blends containing 20 wt% PC decreased rapidly with increasing whisker content. Dynamic mechanical analyses (DMA) results indicated that the storage modulus of the blends increased markedly with increasing K 2 Ti 6 O 13 whisker content. Differential thermal analysis and thermogravimetric measurements showed that potassium titanate whiskers tend to induce chemical decomposition of PC during blending of the PC/whisker blends. However, the incorporation of ABS into PC was beneficial to reduce the PC decomposition during compounding with the whiskers.