新型高吸水性PGA、PEG交联PNIPAM水凝胶的制备及性能研究  

Preparation and performance study of novel highly absorbent PGA and PEG cross-linked PNIPAM hydrogels

作　　者：姜玉[1] 吴艳叶[1] 魏风军[1] 刘辉[1] Jiang Yu;Wu Yanye;Wei Fengjun;Liu Hui(Department of Packing Engineering,Henan University of Science and Technology,Luoyang 471023)

机构地区：[1]河南科技大学包装工程系,洛阳471023

出　　处：《化工新型材料》2025年第4期290-294,共5页New Chemical Materials

基　　金：国家自然科学基金(51675162);河南科技大学博士启动基金项目(1348003)。

摘　　要：分别以聚谷氨酸(γ-PGA,简称PGA)和聚乙二醇(PEG)为原料合成了大分子交联剂甲基丙烯酸缩水甘油酯接枝聚谷氨酸共聚物(PGAGMA)和聚乙二醇双丙烯酸酯(PEGDA),然后与N-异丙基丙烯酰胺(NIPAM)共聚合成了一系列互穿网络水凝胶(PGAs)。结果表明:该水凝胶具有温敏性,由于引入具有强吸水性的聚谷氨酸(PGA)功能基团,因而显著提高了PGAs的平衡溶胀比,同时由于PGA的成膜作用使其在水凝胶内部形成膜结构,能够有效阻碍水分输运,因此该温敏性水凝胶PGAs具有优异的吸水和保水性能。该温敏性水凝胶PGAs有望应用于保水材料领域。Polyglutamic acid(γ-PGA,abbreviated as PGA)and polyethylene glycol(PEG)were used as raw materials to synthesize macromolecular crosslinkers:polyglycidyl methacrylate grafted polyglutamic acid copolymer(PGAGMA)and polyethylene glycol diacrylate(PEGDA),and then copolymerized with N-isopropylacrylamide(NIPAM)to prepare a series of interpenetrating network hydrogels(PGAs).It was found that the PGAs hydrogels were all thermo-sensitive,and the introduction of PGA functional groups with strong water absorption ability could significantly increase the equilibrium-swelling ratio of the PGAs.Meanwhile,due to the film-forming ability of PGA,the membrane structure were formed inside the hydrogels,effectively hindering water transport.Consequently,the thermosensitive hydrogels PGAs had excellent water absorption and retention properties and might have potential applications for water absorbent materials.

关 键 词：聚谷氨酸 N-异丙基丙烯酰胺 温敏性 水凝胶 吸水性 保水性 

分 类 号：TQ427.26[化学工程]