화학공학소재연구정보센터
Journal of Industrial and Engineering Chemistry, Vol.13, No.7, 1131-1136, December, 2007
Synthesis of a Polypropylene-based Compatibilizer by a Radiation Grafting and an Evaluation of PP/WP Composite Properties
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The polypropylene-based compatibilizers, polypropylene-g-maleic anhydride (PP-MAH) and polypropylene-g-(styrene-co-maleic anhydride) (PP-St/MAH) were successfully prepared by a high energy irradiation method. The grafting degree of MAH onto PP increased with an increasing dose and MAH content. In addition, the grafting degree of MAH onto PP was enhanced in the presence of styrene as a comonomer. The compatibilizing effect of the newly-prepared graft copolymers on the polypropylene/wood powder (PP/WP) composites was studied by means of the UTM, SEM and DSC techniques. It was observed that the addition of PP-St/MAH enhanced the mechanical properties of the PP/WP composites and increased the crystallization temperature of the PP phase. These results verify that an improved compatibility and interfacial adhesion between the PP matrix and wood powder contributes to an improvement of the mechanical properties.