自愈水凝胶
纤维素乙醇
肿胀 的
纤维素
材料科学
化学工程
抗压强度
生物降解
原材料
复合材料
化学
高分子化学
有机化学
工程类
作者
Xuezhen Feng,Xing Chen,Chao Wang,Yabing Tian,Shibin Shang,He Liu,Xujuan Huang,Jianxin Jiang,Zhanqian Song,Haibo Zhang
标识
DOI:10.1016/j.ijbiomac.2024.131536
摘要
Cellulosic hydrogels are widely used in various applications, as they are natural raw materials and have excellent degradability. However, their poor mechanical properties restrict their practical application. This study presents a facile approach for fabricating cellulosic hydrogels with high strength by synergistically utilizing salting-out and ionic coordination, thereby inducing the collapse and aggregation of cellulose chains to form a cross-linked network structure. Cellulosic hydrogels are prepared by soaking cellulose in an Al2(SO4)3 solution, which is both strong (compressive strength of up to 16.99 MPa) and tough (compressive toughness of up to 2.86 MJ/m3). The prepared cellulosic hydrogels exhibit resistance to swelling in different solutions and good biodegradability in soil. The cellulosic hydrogels are incorporated into strain sensors for human-motion monitoring by introducing AgNWs. Thus, the study offers a promising, simple, and scalable approach for preparing strong, degradable, and anti-swelling hydrogels using common biomass resources with considerable potential for various applications.
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