EVA-g-MAH的制备及在聚合物共混相容中的应用  

The preparation of EVA-g-MAH and its application in the compatible blending of polymers

作　　者：金世龙 崔崑[2] 毛国梁[1] 历娜[1] 吴韦[1] 马志[2] JIN Shilong;CUI Kun;MAO Guoliang;LI Na;WU Wei;MA Zhi(Provincial Key Laboratory of Oil&Gas Chemical Technology,College of Chemistry&Chemical Engineering,Northeastern Petroleum University,Daqing 163318,Heilongjiang,China;Key Laboratory of Synthesis and Self-assembly Chemistry for Organic Functional Molecules,Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences,Shanghai 200032,China)

机构地区：[1]东北石油大学化学化工学院,石油与天然气化工省重点实验室,黑龙江大庆163318 [2]中国科学院上海有机化学研究所,中国科学院有机功能分子合成与组装化学重点实验室,上海200032

出　　处：《化工进展》2018年第9期3562-3567,共6页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(51534004,U1362110,21374130)及上海市自然科学基金(14ZR1448700)项目。

摘　　要：采用溶液接枝法合成得到乙烯-乙酸乙烯酯接枝马来酸酐聚合物(EVA-g-MAH),利用核磁共振仪和红外光谱仪对产物进行分子链结构分析,结果表明:马来酸酐已成功接枝在EVA主链与酯基相连的叔碳原子上。通过调节马来酸酐(MAH)与EVA中乙酸乙烯酯(VA)单元的投料比,得到了不同接枝率(摩尔分数4.87%~12.3%)的产物。以EVA-g-MAH接枝共聚物为相容剂,通过聚合物加工制备了高密度聚乙烯(HDPE)/聚碳酸酯(PC)/EVA-g-MAH共混物,利用SEM对样品脆断面表面形貌进行对比观察,验证了EVA-g-MAH是HDPE/PC共混聚合物的良好相容剂。最后,研究了EVA-g-MAH对尼龙(PA6)/EVA共混物抗冲击强度的影响,当EVA-g-MAH加入质量分数为6%时对共混合金冲击强度提高最大。EVA-g-MAH polymer was synthesized by solution grafting method.The molecular chain structure of EVA-g-MAH was analyzed by NMR and IR.The results showed that maletic anhydride has been successfully grafted in the main chain of the EVA and the ester group has been connected to the tertiary carbon atoms.By adjusting the feed ratio of maleic anhydride(MAH)to vinyl acetate(VA)units in EVA,we obtained products with different grafting ratios(4.87%-12.3%).Subsequently,high density polyethylene(HDPE)/polycarbonate(PC)/EVA-g-MAH blends were prepared by polymer processing with EVA-g-MAH graft copolymer as the compatibilizer.SEM results of the cross-section confirm that EVA-g-MAH is a good compatibilizer for HDPE/PC blends.Finallly,the effect of EVA-g-MAH on the impact strength of nylon(PA6)/EVA blends was studied.When the adding amount of EVA-g-MAH was 6%,the impact strength of blends was highest.

关 键 词：乙烯-乙酸乙烯酯接枝马来酸酐 溶液接枝法 聚合物 核磁共振 相容剂 聚合物加工 

分 类 号：O632.1[理学—高分子化学] TQ325[理学—化学]