摘要
采用三乙醇胺硼酸酯与聚乙烯醇(PVA)交联反应制备了水凝胶,通过红外光谱和扫描电镜来观察PVA水凝胶结构和形貌进行了表征,并PVA对水凝胶的溶胀性和吸附性进行分析研究。研究结果表明PVA水凝胶内存在较强的氢键作用,部分三乙醇胺接枝在PVA分子链上。三乙醇胺硼酸酯交联10%(质量分数)PVA水溶液时,所得凝胶的溶胀度接近700%。PVA水凝胶内部大孔套小孔相互交织,构成了复杂的不规则孔洞和通道。PVA水凝胶对Cu^(2+)的色素去除率最高达91%,最大吸附量为10.2 mg/g,其吸附过程符合Langmuir方程模型,属单分子层吸附。
Herein,polyvinyl alcohol(PVA)hydrogels were prepared by cross-linking reaction of triethanolamine borate and PVA.The structure and morphology of PVA hydrogels were characterized by FTIR and SEM.The results showed that PVA hydrogel had strong hydrogen bonding effect,and some triethanolamine was grafted onto PVA.The swelling ratio of PVA hdrogel was close to 700%,when the 10 wt%PVA aqueous solution was cross-linked by triethanolamine borate.The macropores and interpores of PVA hydrogel interweaved each other,forming complex irregular holes and passages.The PVA hydrogel had the highest pigment treatment efficiency of 91%and the maximum adsorption capacity of Cu^(2+) was 10.2 mg/g.The adsorption process of PVA hydrogel belonged to Langmuir monolayer adsorption model.
作者
余云材
张毅
林玲
朱学军
王俊
邓俊
廖妮
胡顺忠
张维林
YU Yuncai;ZHANG Yi;LIN Ling;ZHU Xuejun;WANG Jun;DENG Jun;LIAO Ni;HU Shunzhong;ZHANG Weilin(College of Biological and Chemical Engineering,Panzhihua University,Panzhihua 617000,China;Pangang Group Research Institute Co.,Ltd.,Chengdu 610000,China;Support Department of Chengdu Military Region Recovery Office,Chengdu 610000,China)
出处
《功能材料》
CAS
CSCD
北大核心
2022年第8期8226-8230,共5页
Journal of Functional Materials
基金
精细化工助剂及表面活性剂四川省高校重点实验室项目(2019ZXZ07)
攀枝花科技局项目(2019ZD-S-21)
大学生创新训练项目(S202111360015)。
关键词
聚乙烯醇
三乙醇胺硼酸酯
吸附性能
溶胀性能
polyvinyl alcohol
triethanolamine borate
adsorption property
swelling property
