乙烯-乙烯醇基大分子型强化交联剂的合成与应用  

Preparation and application of molecular crosslinking agent based on EVOH

作　　者：樊志鹏[1,2] 李海红[1,2] 柳美华[1] 郑晓伟[1] 张万喜[2] 邓鹏飏[1] 董丽松[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022 [2]吉林大学材料科学与工程学院,长春130025

出　　处：《辐射研究与辐射工艺学报》2008年第6期331-334,共4页Journal of Radiation Research and Radiation Processing

基　　金：长春市科技基金(05GG57);瑞安市科技计划项目(20062095)资助

摘　　要：通过熔融酯化反应制备了乙烯-乙烯醇-g-丙烯酸(EVOH-g-AA)共聚物,用红外光谱对接枝产物进行了表征。凝胶抽提结果显示,由于乙烯基双键的引入,难于辐射交联的EVOH在较低的吸收剂量下就可以辐射交联。改性EVOH与聚乳酸共混物的辐射效应研究结果表明,聚乳酸进入交联网格,说明改性EVOH具有一定的强化辐射交联剂的作用。Ethylene-vinyl alcohol-g-acrylic acid （EVOH-g-AA） copolymer was prepared by melt esterification reaction. FTIR was used to characterize the graft product. Gel extraction results show that EVOH-g-AA becomes easier to be cross-linked by radiation at low absorbed doses, which is different with neat EVOH due to the introduction of vinyl double bond. From the study of irradiated effect of PLA/EVOH-g-AA blends it has been found that PLA could enter the crosslinking network. So the EVOH-g-AA could be used as enhance radiation cross-linking agent.

关 键 词：乙烯-乙烯醇共聚物 丙烯酸 接枝 辐射交联 

分 类 号：O644[理学—物理化学] O631[理学—化学]