高弹性自愈水凝胶(C_3H_5O)_1CB[7]/PAA的制备及性能  

Preparation and mechanical properties of novel(C_3H_5O)_1CB[7]/PAA hydrogel with high elasticity and self-healing properties

作　　者：杨琴[1] 赵娜[1] 房春娟 赵军凯 王文东[2] YANG Qin;ZHAO Na;FANG Chunjuan;ZHAO Junkai;WANG Wendong(College of Chemistry and Chemical Engineering,Xi'an University of Architecture and Technology,Xi'an710055,Shaanxi,China;School of Environmental Engineering,Xi'an University of Architecture and Technology,Xi'an710055,Shaanxi,China)

机构地区：[1]西安建筑科技大学化学与化工学院,陕西西安710055 [2]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《化工学报》2018年第12期5326-5331,共6页CIESC Journal

基　　金：陕西省教育厅专项科研计划项目(17JK0432);陕西省重大科技成果转化引导专项项目(2016KTCG01-17)~~

摘　　要：用丙烯氧基七元瓜环((C_3H_5O)_1CB[7])替代传统的交联剂N,N-亚甲基双丙烯酰胺(BIS)制备了新型丙烯氧基七元瓜环/聚丙烯酸凝胶((C_3H_5O)_1CB[7]/PAA gel),该凝胶具有高弹性和自愈性。采用IR和1H NMR技术对其结构进行表征,研究了该水凝胶的溶胀、力学性能,宏观观察了其自愈性能。结果表明:(C_3H_5O)_1CB[7]/PAA gel的网络形成作用力主要是多重氢键;在丙烯酸(AA) 17.2%,水82.1%,(C_3H_5O)_1CB[7] 0.33%,过硫酸钾(KPS) 0.33%时该水凝胶具有良好的自愈性及力学性能,其最大伸长量为105.6 cm,为原长的86倍,弹性模量0.39 kPa,平衡溶胀率是600%。该水凝胶有望成为一种潜在的生物组织工程材料。A novel type of propenyloxy cucurbituril[7]/polyacrylic hydrogel((C3H5O)1CB[7]/PAA gel)with high elasticity and self-healing properties was fabricated by making use of propenyloxy cucurbituril[7]to replace N,Nmethylene-bis-acrylamide(BIS),which is a traditional cross-linking agent.The structure of the hydrogel was characterized by IR and1H NMR.The swelling and mechanical properties of the hydrogel were studied,and the self-healing properties were observed macroscopically.The results show that multiple hydrogen bonds was considered as the mainly force in the formation of(C3H5O)1CB[7]/PAA gel’s network.The hydrogel has excellent self-healing and mechanical properties in acrylic acid(AA17.2%,water82.1%,propenyloxy cucurbituril[7]((C3H5O)1CB[7])0.33%,potassium persulfate(KPS)0.33%.The maximum elongation of(C3H5O)1CB[7]/PAA gel is105.6cm(86times the original length)and the elastic modulus is0.39kPa,and the equilibrium swelling ratio is600%.(C3H5O)1CB[7]/PAA gel would be a potential bio-tissue engineering material.

关 键 词：丙烯酸 自愈水凝胶 凝胶 聚合物 制备 

分 类 号：O632.51[理学—高分子化学]