摘要
研究了不同MAPP相容剂对木纤维/聚乳酸(WF/PLA)复合材料物理力学性能、热性能及PLA分子量的影响。结果表明:低分子量的MAPP(CA60)相容剂使复合材料制备过程中PLA降解更严重,复合材料耐水性降低;纯MAPP(H1100P)相容剂,可明显提高复合材料耐水性,但不能改善其弯曲强度;由MAPP与PP共混的M300相容剂可抑制复合材料制备过程中PLA的降解,也能提高复合材料的弯曲强度和耐水性,是较好的WF/PLA复合材料相容剂。MAPP相容剂的作用与相容剂在复合材料制备过程中对PLA分子降解的抑制作用有关。
The effect of different MAPP compatibilizer on physical and mechanical properties, molecular weight and thermal properties of WF/PLA bio-composites was evaluated. The results indicated that compatibilizer CA60 with smaller molecule made PLA degraded seriously during WF/PLA bio-composite prepared and the water resistance of composites decreased too. Compatibilizer Hl lOOP of pure MAPP improved the water resistance of WF/PLA composite, but it could not improve the flexural strength. Compatibilizer M300 which consisted of pure MAPP and PP not only restrained the degradation of PLA in WF/PLA bio-composites during preparation,but also improved flexural strength and water resistance of the composite. M300 was a better compatibilizer for WF/PLA composite among the three MAPP compatibilizers. The effect of compatibilizer on WF/PLA bio-composites was related to influence of the compatibilizer on degradation of PLA during the composite was prepared.
出处
《塑料》
CAS
CSCD
北大核心
2009年第4期7-9,3,共4页
Plastics
基金
中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金(CAFINT2007C02)
关键词
马来酸酐接枝聚丙烯
聚乳酸
木纤维
分子量
复合材料
maleic anhydride polypropylene
polylactic acid
wood fiber
molecular weight
composite
