文献类型：期刊文献

英文题名：Wet-Stable Lamellar Wood Sponge with High Elasticity and Fatigue Resistance Enabled by Chemical Cross-Linking

作者：Guan, Hao[1] Zhang, Chi[2] Tu, Kunkun[3,4] Dai, Xinjian[1] Wang, Xin[1] Wang, Xiaoqing[1]

第一作者：Guan, Hao

通信作者：Wang, XQ[1]

机构：[1]Res Inst Wood Ind, Chinese Acad Forestry, Beijing 100091, Peoples R China;[2]Dept Mech & Proc Engn, ETH Zurich, CH-8092 Zurich, Switzerland;[3]China Univ Min & Technol, Carbon Neutral Inst, Xuzhou 221008, Jiangsu, Peoples R China;[4]China Univ Min & Technol, Jiangsu Key Lab Coal Based Greenhouse Gas Control, Xuzhou 221008, Jiangsu, Peoples R China

年份：2024

卷号：16

期号：14

起止页码：18173-18183

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20241515871287);Scopus(收录号：2-s2.0-85189536648);WOS:【SCI-EXPANDED(收录号:WOS:001195049200001)】；

基金：This work was financially supported by the National Key Research and Development Program of China (2023YFD2200501), the National Natural Science Foundation of China (NSFC Grant No. 32371796), and the Fundamental Research Funds for the Central Nonprofit Research Institution of CAF (CAFYBB2020QA004). The authors thank Maximilian Ritter from ETH Zurich for the help with SAXS characterization and analysis, as well as Dr. Zhidong Zhang from ETH Zurich for the assistance in nitrogen adsorption-desorption experiments.

语种：英文

外文关键词：wood sponge; cellulose aerogel; elasticity; wet stability; chemical cross-linking

摘要：The excessive consumption of fossil-based plastics and the associated environmental concerns motivate the increasing exploitation of sustainable biomass-based materials for advanced applications. Natural wood-derived lamellar wood sponges via a top-down approach have recently attracted significant attention; however, the insufficient compressive fatigue resistance and lack of structural stability in water limit their wide applications. Here, we report a facile chemical cross-linking strategy to tackle these challenges, by which the cellulose fibrils in the lamellas are covalently bridged to enhance their connectivity. The cross-linked wood sponges demonstrate high compressibility up to 70% strain and exceptional compressive fatigue resistance (similar to 5% plastic deformation after 10,000 cycles at 50% strain). The interfibrillar cross-linking inhibits the swelling of cellulose fibrils and preserves the arch-shaped lamellas of the sponge in water, endowing the wood sponge with excellent wet stability. Such highly elastic and wet-stable lamellar wood sponges offer a sustainable alternative to synthetic polymer-based sponges used in diverse applications.