聚乙烯醇/玉米秸秆水凝胶的合成与吸液性能  

Synthesis and absorbent properties of PVA/CS hydrogels

作　　者：祝宝东[1] 韩帛恩 赵庚 黄建鑫 ZHU Bao-dong;HAN Bo-en;ZHAO Geng;HUANG Jian-xin(College of Chemistry and Chemical Engineering,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]东北石油大学化学化工学院,黑龙江大庆163318

出　　处：《化学工程师》2022年第10期101-103,共3页Chemical Engineer

摘　　要：通过水溶液聚合法合成了聚乙烯醇(PVA)/玉米秸秆(CS)接枝丙烯酸(AA)和丙烯酰胺(AM)水凝胶。采用FT-IR、SEM和OM表征了水凝胶的微观结构和形貌,并测试了其吸液性能和机械强度。结果表明,PVA通过氢键与聚合物网络之间形成相互作用,水凝胶的表面布满褶皱、微孔和凸起,微米尺度的秸秆纤维比较均匀地分散在聚合物基体中;水凝胶吸100倍水后仍表现出一定的抗压强度,在蒸馏水中溶胀30min时的吸液倍率可达125g·g^(-1),对Ca^(2+)、Al^(3+)盐溶液出现消溶胀行为。The polyvinyl alcohol(PVA)/corn stalk(CS)graft copolymerization on acrylic acid(AA)and acrylamide(AM)hydrogel was synthesized by aqueous solution polymerization.The microstructure and morphology of hydrogels were studied by FT-IR,SEM and OM,and its absorption properties and mechanical strength were tested.The results showed that the interaction between PVA and the polymer network was formed through hydrogen bonds,the surface of hydrogel was covered with wrinkles,micropores and bulges,and the micron-scale straw fibers were relatively uniformly dispersed in the polymer matrix.The hydrogel still showed a certain compressive strength after absorbing 100 times of water,and the absorption rate reached to 125g·g^(-1)when swelling in distilled water for 30min as well as there appeared a deswelling behavior for Ca^(2+)and Al^(3+)salt solutions.

关 键 词：水凝胶 玉米秸秆 丙烯酸 丙烯酰胺 聚乙烯醇 

分 类 号：TQ317.4[化学工程—高聚物工业]