Improvement in compatibility and mechanical properties of modified wood fiber/polypropylene composites

作     者：Wenjie DANG Yongming SONG Qingwen WANG Weihong WANG 

作者机构：China Wood Conservation and Substitution Development CenterBeijing 100834China Key Laboratory of Bio-based Material Science and Technology of Ministry of EducationNortheast Forestry UniversityHarbin 150040China 

出 版 物：《中国高等学校学术文摘·林学》 (FRONTIERS OF FORESTRY IN CHINA)

年 卷 期：2008年第3卷第2期

页      面：243-247页

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：wood fiber polypropylene PP-g-MAH SEBS-g-MAH 

摘      要：To improve the interfacial compatibility between wood fibers and polypropylene and the toughness of wood-fiber/polypropylene composites, maleic anhydride grafted polypropylene (PP-g-MAH) and maleic anhydride grafted styrene-ethylene-butadiene-styrene copolymers (SEBS-g-MAH) were used as modifiers. Mechanical properties of wood-fiber/polypropylene (WF/PP) composites were improved when PP-g-MAH or SEBS-g-MAH was added. When either of these copolymers was added, the composites had better interfacial compatibility than the unmodified composite. This was verified by scanning electron microscope (SEM) observations and dynamic mechanical analysis (DMA). The mechanical properties of the composites were significantly improved because of the good interfacial bonding between wood fibers and polypropylene when PP-g-MAH and SEBS-g-MAH were added.