摘要
分别甩硅烷偶联剂、钛酸酯偶联剂A、钛酸酯偶联剂B、改性甘油C、改性甘油D以及甘油对玉米淀粉进行改性处理,研究了改性剂对PP/高含量淀粉材料的力学性能、形态以及界面的影响。结果表明,甘油与钛酸酯偶联剂A降低了材料的韧性,而改性甘油C对体系的韧性具有较好的改善效果。当改性甘油C相对于淀粉用量为1.5%、淀粉含量为50%时,PP/淀粉材料的断裂伸长率和冲击强度分别比PP/未改性淀粉体系提高了280%和17%。扫描电镜观察表明,改性甘油C不仅能改善淀粉的分散性,而且增加了淀粉与PP之间的界面作用力,具有增容作用。
Corn starch was treated separately using couple agents (titanate and organosilant), glycerol, and chemically modified glycerol agents (C and D). The mechanical properties and the interface morphology of PP/high content corn starch composites were investigated. At 50 wt % corn starch, which was modified with 1.5 wt % glycerol agent C, PP/corn starch blend exhibited the best mechanical properties, the elongation at break and the impact strength were nearly increased by 280 % and 17 %, respectively, in comparison with PP/coarse starch blend. SEM showed that glycerol agent C not only improved the dispersion of starch in PP, but also played an important role as a compatilizer, which enhanced the interface interaction between starch and PP.
出处
《中国塑料》
CAS
CSCD
北大核心
2007年第5期35-38,共4页
China Plastics
关键词
玉米淀粉
聚丙烯
改性甘油
力学性能
corn starch
polypropylene
modified glycerol
mechanical property