Effects of accelerated aging and compatibilizers on the mechanical and morphological properties of polypropylene and poly(acrylonitrile-butadiene-styrene) blends

被引:24
|
作者
Lee, Yun Kyun [1 ]
Lee, Jae Bok [1 ]
Park, Dong Hyup [1 ]
Kim, Woo Nyon [1 ]
机构
[1] Korea Univ, Dept Chem & Biol Engn, Seoul 136713, South Korea
基金
新加坡国家研究基金会;
关键词
polymer blends; compatibility; mechanical property; morphology; accelerated aging; RHEOLOGICAL PROPERTIES; PP/ABS BLENDS; G-MAH; ABS; DEGRADATION; IMPACT; POLYCARBONATE; TERPOLYMER; BEHAVIOR;
D O I
10.1002/app.37504
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The effects of maleic anhydride-grafted styrene-ethylene-butylene-styrene copolymer (SEBS-g-MAH) on the mechanical and morphological properties of polypropylene (PP) and poly(acrylonitrile-butadiene-styrene) (ABS) blends were investigated. Based on mechanical properties, including impact and tensile strengths, the PP/ABS (70/30) blends containing SEBS-g-MAH showed improved impact strength with minimal loss of tensile strength. As determined from morphological studies of the PP/ABS blends, addition of SEBS-g-MAH decreased PP/ABS blend droplet size more than the addition of SEBS. Additionally, the effects of SEBS-g-MAH and SEBS on the mechanical and morphological properties of the PP/ABS (70/30) blends were investigated during accelerated aging in an oven at 90 degrees C for 72 h (one cycle). The impact strength of the PP/ABS (70/30) blends with SEBS-g-MAH (7 phr) decreased less than 10% after five cycles, but blends with SEBS (7 phr) and blends without compatibilizer decreased as much as 37%. The tensile strengths of the PP/ABS (70/30) blends after accelerated aging indicated a trend similar to that of the impact strength. The morphological studies indicated no significant changes in the PP/ABS (70/30) blends with SEBS-g-MAH; however, many cavities and damages were observed in the blend with SEBS. The above results suggest that SEBS-g-MAH acts as an impact modifier and as a good compatibilizer in the PP/ABS (70/30) blends. (C) 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
引用
收藏
页码:1032 / 1037
页数:6
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