文献类型：期刊文献

英文题名：Preparation and Properties Study of Wood-Based Cushioning Materials

作者：Pei, Shuang[1,2,3] Fu, Zongying[3] Gou, Jinsheng[1] Lu, Yun[3]

第一作者：Pei, Shuang

通信作者：Gou, JS[1];Lu, Y[2]

机构：[1]Beijing Forestry Univ, Key Lab Wood Mat Sci & Applicat, Minist Educ, Beijing 100083, Peoples R China;[2]Beijing Forestry Univ, Beijing Key Lab Wood Sci & Engn, Beijing 100083, Peoples R China;[3]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2023

卷号：15

期号：6

外文期刊名：POLYMERS

收录：;EI(收录号：20231513860985);Scopus(收录号：2-s2.0-85151632133);WOS:【SCI-EXPANDED(收录号:WOS:000958231400001)】；

语种：英文

外文关键词：elastic wood; cushioning qualities; mechanical properties; electromagnetic shielding

摘要：Traditional cushioning package materials, such as Expended Polystyrene (EPS) and Expanded Polyethylene (EPE), were made with petroleum-based plastics, which are harmful to the environment. It is crucial to develop renewable bio-based cushioning materials that can replace the aforementioned foams due to the rising energy demands of human society and the depletion of fossil fuels. Herein, we report an effective strategy for creating anisotropic elastic wood with special spring-like lamellar structures. Selective removal of lignin and hemicellulose by simple chemical treatment and thermal treatment of the samples after freeze-drying results in an elastic material with good mechanical properties. The resulting elastic wood has a reversible compression rate of 60% and a high elastic recovery (99% height retention after 100 cycles at 60% strain). Drop tests revealed that the elastic wood has excellent cushioning properties. In addition, the chemical and thermal treatments also enlarge the pores in the material, which is favorable for subsequent functionalization. By loading the elastic wood with a muti-walled carbon nanotube (MWCNT), electromagnetic shielding properties are achieved, while the mechanical properties of elastic wood remain unchanged. Electromagnetic shielding materials can effectively suppress various electromagnetic waves propagating through space and the resulting electromagnetic interference and electromagnetic radiation, improve the electromagnetic compatibility of electronic systems and electronic equipment, and ensure the safety of information.