Synthesis of polypropylene-graft-maleic anhydride compatibilizer and evaluation of nylon 6/polypropylene blend properties

被引:40
作者
Abacha, N
Fellahi, S
机构
[1] Tokyo Inst Technol, Dept Chem Engn, Tsuda & Kubouchi Lab, Meguro Ku, Tokyo 1528552, Japan
[2] IAP, Plast & Rubber Engn Dept, Bournerdes 35000, Algeria
关键词
polypropylene; nylon; 6; compatibilizer; reactive processing; grafting; blend; maleic anhydride;
D O I
10.1002/pi.1788
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Polymer blends based on polyolefins are of a great interest owing to their broad spectrum of properties and practical applications. However, because of poor compatibilities of components, most of these systems generally exhibit high interfacial tension, a low degree of dispersion and poor mechanical properties. It is generally accepted that polypropylene (PP) and nylon 6 (N6) are not compatible and that their blending results in poor materials. The compatibility can be improved by the addition of a compatibilizer, and in this study PP was functionalized by maleic anhydride (MAH) in the presence of an optimized amount of dicumyl peroxide (DCP). The reaction was carried out in the molten state using an internal mixer. Then, once the compatibilizer polypropylene-graft-maleic anhydride (PP-g-MAH) was prepared, it was added at various concentrations (2.5-10wt%) to 30/70 glass fibre reinforced N6 (GFRN6) PP, and the mechanical properties were evaluated. It was found that the incorporation of the compatibilizer enhanced the tensile properties (tensile strength and modulus) as well as the Izod impact properties of the notched samples. This was attributed to better interfacial adhesion as evidenced by scanning electron microscopy (SEM). The optimum in these properties was achieved at a critical PP-g-MAH concentration. (c) 2005 Society of Chemical Industry.
引用
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页码:909 / 916
页数:8
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