High performance soft fiber-reinforced sodium alginate/polyacrylamide double-network hydrogels  

作　　者：Xiaodan Wang Dan Xie Wenwen Hou Lilong Gao Yanzhi Xia Kunyan Sui 

机构地区：[1]College of Materials Science and Engineering,State Key Laboratory of Bio-Fiber and Eco-textiles,Collaborative Innovation Center for Marine Biobased Fibers and Ecological Textile Technology Institute of Marine Biobased Materials,Qingdao University,Qingdao,266071,PR China

出　　处：《Progress in Natural Science:Materials International》2024年第6期1267-1273,共7页自然科学进展·国际材料(英文版)

基　　金：supported by the National Natural Science Foundation of China(51573080,51873094);the Key Research and Development Project of Shandong Province(2016GGX102005);Technology Development Project of Shinan District of Qingdao(2018-4-007-ZH);Program for Taishan Scholar of Shandong Province

摘　　要：Strong and stretchable hydrogels are in great demand but challenging due to the trade-off between the strength and stretchability.Here,we successfully prepared highly strong and stretchable sodium alginate/polyacrylamide(SA/PAM)double network(DN)hydrogels by using swollen calcium alginate fiber(CAF)as the first energy dissipating network.The swollen fibers contributed two functions:the homogeneous SA ionic crosslinkedpolymer networks and the soft fiber reinforcement.In contrast to the stiff fiber,the soft CAF provide more effective energy dissipation transferring from soft fiber to the liquid hydrogel.The as-prepared hydrogels demonstrated a high tensile strength(0.83 MPa),high stretchability(4230%),and high toughness(15.7 MJ/m^(3)),as 5,3 and 14 times of the SA/PAM hydrogels.This soft fiber-reinforced strategy offers a new way for preparing high-performance hydrogels,broadening their applications areas.

关 键 词：Highly stretchable hydrogels Soft sodium alginate fiber Double networks hydrogels 

分 类 号：TQ427.26[化学工程]