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Large stabilizing effect of titanium dioxide on photodegradation of PVC/α‐methylstyrene‐acrylonitrile copolymer/impact modifier‐matrix composites
Author(s) -
Zhang Zhen,
Wang Shichao,
Zhang Jun
Publication year - 2014
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.22904
Subject(s) - materials science , composite material , acrylonitrile , copolymer , thermogravimetric analysis , photodegradation , titanium dioxide , ultimate tensile strength , vinyl chloride , fourier transform infrared spectroscopy , izod impact strength test , elongation , polymer , chemical engineering , catalysis , photocatalysis , organic chemistry , chemistry , engineering
A large stabilizing effect was obtained via adding titanium dioxide (TiO 2 ) into poly (vinyl chloride)/α‐methylstyrene‐acrylonitrile copolymer/impact modifier blends. A comparison between photodegradation of blends (without TiO 2 ) and composites (with TiO 2 ) was conducted. Results of color difference, surface morphology, and thermogravimetric analysis tests indicated the higher UV resistance of composites than blends. Composites exhibited a almost unchangeable tensile strength and a certain retention rate of elongation at break; while drastic loss in these two properties were observed for blends. Fourier transform infrared and rheological tests also revealed the stabilizing effect exerted by TiO 2 , and it was found that different systems exhibited different stabilizing mechanisms. POLYM. COMPOS., 35:2365–2375, 2014. © 2014 Society of Plastics Engineers