文献类型：期刊文献

中文题名：Facile preparation of low swelling,high strength,self-healing and pH-responsive hydrogels based on the triple-network structure

作者：Zhicun WANG[1];Xiaoman HAN[1];Yixi WANG[1];Kenan MEN[2];Lin CUI[3];Jianning WU[1];Guihua MENG[1];Zhiyong LIU[1];Xuhong GUO[1,4]

机构：[1]School of Chemistry and Chemical Engineering,Shihezi University/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan/Key Laboratory of Materials-Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region/Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Bingtuan,Shihezi 832003,China;[2]Bingtuan Sishi Hospital,Yili 835000,China;[3]School of Medicine,Shihezi University,Shihezi 832003,China;[4]State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China

年份：2019

卷号：13

期号：1

起止页码：54

中文期刊名：Frontiers of Materials Science

外文期刊名：材料学前沿（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2019_2020】；PubMed;

基金：funding from the National Natural Science Foundation of China(Grant Nos.51662036 and 21467024);the Graduate Student Scientific Research Innovation Projects in Xinjiang Autonomous Region,China(XJGRI2017046).

语种：英文

中文关键词：hydrogel;triple-network;structure;mechanical;property;swelling;selfhealing

摘要：A polyacrylic acid(PAA)/gelatin(Gela)/polyvinyl alcohol(PVA)hydrogel was prepared by copolymerization,cooling,and freezing/thawing methods.This triplenetwork(TN)structure hydrogel displayed superior mechanical properties,low swelling ratio and self-healing properties,The superior mechanical properties are attributed to the triple helix association of Gela and PVA crystallites by reversible hydrogen bonding.The characterization results indicated that the fracture stress and the strain were 808 kPa and 370% respectively,while the compression strength could reach 4443 kPa and the compressive modulus was up to 39 MPa under the deformation of 90%.The hydrogen bonding in PVA contributed to maintain and improve the self-healing ability of hydrogels.Every type of hydrogels exhibited a higher swelling ratio under alkaline conditions,and the swelling ratios of PAA,PAA/PVA and PAA/Gela hydrogels were 27.71,12.30 and 9.09,respectively.The PAA/Gela/PVA TN hydrogel showed the lowest swelling ratio(6.57)among these hydrogels.These results indicate that the novel TN hydrogels possess good environmental adaptability and have potential applications in the biomedical engineering and sensor field.