文献类型：期刊文献

英文题名：Superhydrophobic elastomer with leaf-spring microstructure made from natural wood without any modification chemicals

作者：Gao, Runan[1,2] Huang, Yuxiang[1] Gan, Wentao[2] Xiao, b Shaoliang[2] Gao, Yang[3] Fang, Ben[3] Zhang, Xueming[5] Lyu, Bin[1,2] Huang, Rongfeng[] Li, Jian[2] Wei, Xiaoding[3] Deng, Yulin[4] Lu, Yun[1,2]

第一作者：Gao, Runan

通信作者：Lu, Y[1];Lu, Y[2];Wei, XD[3];Deng, YL[4]|[a000547dbdc9826482af5]卢芸;

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Northeast Forestry Univ, Mat Sci & Engn Coll, Key Lab Biobased Mat Sci & Technol, Minist Educ, Harbin 150040, Peoples R China;[3]Peking Univ, Coll Engn, Beijing Innovat Ctr Engn Sci & Adv Technol, Dept Mech & Engn Sci, Beijing 100871, Peoples R China;[4]Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA;[5]Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China

年份：2022

卷号：442

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20221912075793);Scopus(收录号：2-s2.0-85129428136);WOS:【SCI-EXPANDED(收录号:WOS:000797831800002)】；

基金：Acknowledgements The authors acknowledge financial support from the National Nat-ural Science Foundation of China (Grant Nos. 32122058, 31870535, 32001380, 32001256, 11890681) . We gratefully acknowledge the support of Dr. Yuanyuan Miao for SEM test and Dr. Yijing Li for the Raman test.

语种：英文

外文关键词：Wood elastomer; Superhydrophobicity; Cellulose nanoarrays; Lignin; Wood ray; Photothermal effect

摘要：Herein, we report a superhydrophobic elastomer which was made directly from natural wood with a simple chemicothermal treatment without adding any modification chemicals. One of the most important findings is that the unique micro-nano structure in original wood was well maintained in the final wood elastomer, which result in many unique physical-chemical properties. The chemicothermal process tailors the nano-microstructure of wood by deteriorating polysaccharides into cellulose nanoarrays, and simultaneously, removes the hydrophilic groups in lignin which then re-assembles to cellulose nanoarrays to form a superhydrophobic surface with a contact angle up to 152 degrees. Retained lignin aromatic skeleton also results in significant self-photothermal effect. Meanwhile, ray tissues in natural wood are hollowed to leave leaf-spring-like microstructure, which leads to great elasticity of wood elastomer with 97% stress retention at 60% strain after 103 compression cycles. Thanks to the microstructure and functions arising from wood itself, the elastomer shows many potential applications such as in solar-assisted crude oil recovery as well as water/oily liquids separation.