聚乙烯接枝香豆素衍生物作为多功能助剂的应用探究  

Application of Polyethylene Grafted Coumarin Derivatives as Multifunctional Additives

作　　者：张银 王煜 尤伟 Yin Zhang;Yu Wang;Wei You(Beijing National Laboratory for Molecular Sciences(BNLMS),CAS Key Laboratory of Engineering Plastics,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190;University of Chinese Academy of Sciences,Beijing 100049)

机构地区：[1]中国科学院化学研究所、北京分子科学国家研究中心、中国科学院工程塑料重点实验室,北京100190 [2]中国科学院大学,北京100049

出　　处：《高分子学报》2023年第12期1836-1843,共8页Acta Polymerica Sinica

基　　金：北京市自然科学基金面上项目(基金号2232074)资助.

摘　　要：以商品化乙烯醋酸乙烯酯共聚物(EVA)为原料,通过Mitsunobu衍生化反应合成了以香豆素为功能侧基的多功能聚乙烯.香豆素及其衍生物是一种多功能性的化合物,拥有抗菌、抗癌、光敏性、抗紫外线吸收以及抗氧化等特性,引入聚乙烯骨架可以赋予聚乙烯相似特性.以红外和核磁表征手段对聚乙烯基香豆素衍生物结构进行了确认.将其用作聚乙烯的加工助剂,不仅能够赋予聚乙烯基底抗菌和抗氧化的特性,而且还能够起到抗紫外线老化的效果;与此同时,相比于商用抗紫外线吸收剂,其不仅具有更为优越的抗紫外线老化性能,而且还能够有效避免助剂的迁移.In recent years,there has been a great emphasis on improving the value of polyethylene(PE)products by developing high-performance PE products.Post-functionalization modification of PE is an effective method to achieve this goal.The use of additives for functionalized modification of PE is a straightforward and economical approach.However,most additives are organic small molecule compounds that tend to migrate,evaporate,or get lost from the polymer matrix through solvent extraction during the use of polymer products.This results in a decrease in product performance and poses a threat to human health,especially in the field of food packaging.Modifying small molecular additives by macromolecules has emerged as current research frontiers to address the aforementioned issues.This study aims to create macromolecular functional additives using functionalized PE with coumarin as the side groups.A PE derivative with coumarin as the functional side group is synthesized using the Mitsunobu derivatization reaction of commercial poly(ethylene-co-vinyl acetate)(EVA).The polymer structures are confirmed through infrared and nuclear magnetic resonance characterization.When used as an additive for PE,it not only provides antibacterial and antioxidant properties to the substrate,but also resists ultraviolet ageing.Additionally,it outperforms commercial UV absorbers(UV-329)by effectively avoiding the additive migration while maintaining superior UV ageing resistance.

关 键 词：聚烯烃功能化改性 香豆素及其衍生物 高分子助剂 

分 类 号：TQ314.24[化学工程—高聚物工业]