北京林业大学学报2009，Vol.31Issue(6)：97-102,6.
MAPP对麦秸纤维-聚丙烯复合材料热力学性能的影响
Effects of MAPP on the dynamic mechanical and thermal properties of wheat straw fiber-polypropylene composites
摘要
Abstract
Composites of polypropylene (PP) and wheat straw fiber (9, 28, 35 mesh) modified by maleic anhydride polypropylene (MAPP, 1%, 2%, 5%, 10% ,weight percentage) were prepared, and the dynamic flexural mechanical, thermal properties and surface morphology of wheat straw fiber-PP composites were investigated by dynamic mechanical analysis (DMA), differential scanning calorimeters (DSC), thermal gravimetric analysis (TGA) and scanning electron microscopy (SEM). With incorporation of 2% MAPP, wheat straw fiber-PP composites showed the lowest storage flexural modulus (E'), while the composites containing 5 % and 10% of MAPP exhibited the highest E'. The DSC study revealed that the addition of the MAPP to the composites increased the nucleating ability of PP in the surface of wheat straw fiber, with an increase of 1℃ in crystallization temperature (T_c) and an increase of 4%-8 % in crystallinity (X_c). The PP composites reinforced with wheat straw fiber between 28 and 35 mesh had the highest T_c of 122.7℃ and X_c of 45.8%. The composites underwent two decomposition peaks: one peak at about 355℃ and the other shoulder at around 460℃. With the addition of MAPP, better dispersion of PP matrix in the surface of wheat straw fiber could be created.关键词
麦秸纤维-聚丙烯复合材料/马来酸酐接枝聚丙烯/热性能/结晶行为Key words
wheat straw fiber-PP composites/ MAPP/ thermal properties/ crystallization behavior分类
农业科技引用本文复制引用
潘明珠,周定国,张述垠,Mosto Bousmina..MAPP对麦秸纤维-聚丙烯复合材料热力学性能的影响[J].北京林业大学学报,2009,31(6):97-102,6.基金项目
加拿大自然科学和技术研究委员会基金项目. （）
