文献类型：期刊文献

中文题名：高弹性可降解PAM/Gel/PVAL三网络水凝胶的制备及性能

英文题名：Preparation and Properties of Highly Elastic Degradable Polyacrylamide/Gelatin/Polyvinyl Alcohol Triple Network Hydrogels

作者：景占鑫[1];周家美[1];肖玮玉[1];钟火娇[1];张兆霞[1];李泳[1];梁燕秋[1]

机构：[1]广东海洋大学化学与环境学院

年份：2019

卷号：47

期号：7

起止页码：7

中文期刊名：工程塑料应用

外文期刊名：Engineering Plastics Application

收录：CSTPCD、、北大核心2017、CSCD2019_2020、北大核心、CSCD

基金：广东省自然科学基金项目(2018A03037020);广东省普通高校青年创新人才项目(2017KQNCX089);湛江市科技计划项目(2017A02016);国家级大学生创新创业项目(CXXL2018034);广东海洋大学“海之帆-启航计划”大学生科技创新培育项目(qhjhzr201806)

语种：中文

中文关键词：聚丙烯酰胺;明胶;聚乙烯醇;水凝胶;三网络结构;流变行为;力学性能

外文关键词：polyacrylamide;gelatin;poly(vinyl alcohol);hydrogel;triple-network structure;rheological behavior;mechanical property

中文摘要：通过控制外场条件依次构筑聚丙烯酰胺(PAM)网络、明胶(Gel)网络和聚乙烯醇(PVAL)网络,制备了PAM/Gel/PVAL三网络水凝胶,对其化学结构、表面形貌、流变行为、力学性能和降解性能进行了分析。扫描电子显微镜结果表明,PAM/Gel/PVAL三网络水凝胶的孔密度明显高于单网络或双网络水凝胶,而且具有相互贯穿的孔通道。流变学测试和力学性能测试表明,制备的三网络水凝胶的力学性能明显优于单网络和双网络水凝胶,其具有很好的韧性和恢复性能,当丙烯酰胺(AM)用量为2.0 g,Gel和PVAL的用量均为1.0 g时,三网络水凝胶的压缩强度和压缩应变可以达到3.16 MPa和90.1%。降解实验证实,PAM/Gel/PVAL三网络水凝胶在磷酸缓冲溶液中展现出一定的降解能力,当AM,Gel和PVAL的用量分别为2.0,1.0,0.5 g时,其降解率最大为42.0%。PAM/Gel/PVAL三网络水凝胶的力学性能和降解性能均与材料的组成有关,通过改变水凝胶的组成可有效调控其力学和降解性能。

外文摘要：Polyacrylamide(PAM)/gelatin(Gel)/poly(vinyl alcohol)(PVAL)triple-network hydrogels were prepared by controlling the external field conditions to construct PAM network,Gel network and PVAL network,and their chemical structures,surface morphologies and rheological behaviors,mechanical properties and degradation properties were analyzed.SEM result shows that the PAM/Gel/PVAL triple-network hydrogel has a significantly higher pore density than the single-network or double-network hydrogel,and has interpenetrating pore channels.Rheology test and mechanical property test show that the mechanical properties of the prepared three-network hydrogel are significantly better than single-network and double-network hydrogels.PAM/Gel/PVAL triple-network hydrogels have good toughness and resilience performance,and the compressive strength and strain of triple-network hydrogel(the amounts of AM,Gel and PVAL are 2.0,1.0 g and 1.0 g,respectively)can reach 3.16 MPa and 90.1%.Degradation experiments confirm that PAM/Gel/PVAL triple-network hydrogel exhibits a certain degradation ability in phosphate buffer solution,and its weight loss ratio is up to 42.0% (the amounts of AM,Gel and PVAL are 2.0,1.0 g and 0.5 g,respectively).The mechanical properties and degradation properties of PAM/Gel/PVAL triple-network hydrogels are related to the composition of the materials,so their mechanical and degradation properties can be effectively controlled by changing the composition of the triplenetwork hydrogels.