Facile Approach for Preparation of Xylan-based Double-network Hydrogels  

作　　者：Ziwen Lyu Jun Rao Xianming Qi Ziyi Bai Siyu Jia Zhenhua Su Feng Peng 

机构地区：[1]Beijing Key Laboratory of Lignocellulosic Chemistry,Beijing Forestry University,Beijing,100083,China [2]China National Pulp and Paper Research Institute Co.,Ltd.,Beijing,100102,China

出　　处：《Paper And Biomaterials》2022年第1期19-27,共9页造纸与生物质材料（英文）

摘　　要：In this study,xylan-based double-network(DN)hydrogels(xylanbased DN gels)with excellent mechanical properties were prepared using acrylic acid and acrylamide(AM)based on a DN approach.The first layer network was obtained by grafting and crosslinking polyacrylic acid(PAA)molecular chains onto xylan with ammonium persulfate(APS)as the initiator and N,N'-methylenebisacrylamide(MBA)as the crosslinking agent;this network was subsequently immersed into an aqueous AM monomer in the presence of APS and MBA for the preparation of the second layer network.The results showed that the double networks were crosslinked by covalent bonds and that the mechanical properties of the xylan-based DN gels were enhanced.Thus,the xylan-based DN gels exhibited a maximum compression stress of 24.9 MPa.The xylan-based DN gels could also recover 97%of their original height after 15 repeated compression cycles;this indicates that the xylan-based DN gels possessed high resistance to friction and wear.Therefore,the prepared xylan-based DN gels have considerable potential for tissue engineering applications.

关 键 词：XYLAN DN gels mechanical property tissue engineering 

分 类 号：TQ427.26[化学工程]