摘要
采用熔融法进行马来酸酐(MAH)和丙烯酸丁酯(BA)双单体接枝聚丙烯(PP)的研究。结果表明,在一定工艺条件下,仅添加一单体马来酸酐时,接枝率G在其加入量为4%(质量分数)时达到最大(0.65 mmol/g PP);马来酸酐添加量保持不变,接枝率随第二单体丙烯酸丁酯添加量增加而出现一极值(1.34 mmol/g PP),比一单体接枝聚丙烯的接枝率高出一倍,并高于文献值(0.36 mmol/g PP)。经红外光谱、热失重分析和差示扫描量热分析表明,马来酸酐、丙烯酸丁酯均与聚丙烯发生接枝反应,并且以短支链的形式连接在PP的主链上。
Simultaneous graft polymerization of polypropylene (PP) with two different monomers, maleic anhydride (MAH) and butyl acrylate (BA), using melting method was studied. Experimental results revealed that: if the grafting modification of PP was carried out only with MAH, the grafting degree (G) reached a maximum (0.65 mmol/g PP) when the dosage of MAH was 4% (mass ratio). In the co-grafting process, with the dosage of MAH at a constant amount (4%, mass ratio), it was found that the grafting degree attained a maximum (1.34 mmol/g PP) when the amount of BA was 3% (mass ratio), which is double that with one monomer and higher than the value (0.36mmol/g PP) ever reported. Characterization by chemical titration, IR, DSC and TGA revealed that both MAH and BA are grafted with PP as short-chain branches.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2009年第4期4-7,共4页
Polymer Materials Science & Engineering
基金
浙江大学宁波理工学院基金资助项目(1140457G703)
关键词
马来酸酐
丙烯酸丁酯
接枝共聚
聚丙烯
maleic anhydride
butyl acrylate
graft copolymerization
polypropylene