文献类型：期刊文献

英文题名：Transparent, UV blocking, and strong wood-based biocomposites with isotropic optical and mechanical properties

作者：Wu, Jiamin[1] Wang, Yang[1] Wu, Yingji[1] Cai, Liping[1] Zhang, Daihui[1,2,5,6] Lu, Jianxiong[1,3] Li, Jianzhang[1,4] Xia, Changlei[1,5]

第一作者：Wu, Jiamin

通信作者：Zhang, DH[1];Xia, CL[1];Zhang, DH[2]

机构：[1]Nanjing Forestry Univ, Coll Mat Sci & Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chemicalsand Mat, Nanjing, Jiangsu, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing, Jiangsu, Peoples R China;[3]Chinese Acad Forestry, Res Inst Wood Ind, Beijing, Peoples R China;[4]Beijing Forestry Univ, Beijing Key Lab Wood Sci & Engn, Beijing, Peoples R China;[5]Nanjing Forestry Univ, Coll Mat Sci & Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Jiangsu, Peoples R China;[6]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China

年份：0

外文期刊名：WOOD MATERIAL SCIENCE & ENGINEERING

收录：;EI(收录号：20230413418921);Scopus(收录号：2-s2.0-85146449783);WOS:【SCI-EXPANDED(收录号:WOS:000917867800001)】；

基金：This work is supported by the National Key R&D Program of China [grant number 2022YFD2200105], Jiangsu Agriculture Science and Technology Innovation Fund (JASTIF) [grant number CX(22)2045], Natural Science Foundation of Jiangsu Province [grant number BK20200775], State Administration of Foreign Experts Affairs High-End Foreign Experts Project [grant number G2021014041L], Postgraduate Research & Practice Innovation Program of Jiangsu Province [grant number KYCX22-1082] and National Natural Science Foundation (32271809).

语种：英文

外文关键词：Transparent wood-based biocomposites; isotropic properties; strong strength; UV-blocking; optical transmittance

摘要：Transparent wood-based materials show great potential for energy-efficient housing and construction due to their ideal optical performances, good mechanical strengths, and low thermal conductivity. However, it still remains a great challenge to fabricate UV-blocking and strong transparent wood-based materials with isotropic optical and mechanical properties, mainly due to the natural anisotropy of wood. Herein, we describe a facile strategy to prepare transparent wood-based biocomposites by integrating delignified wood particles with poly(vinyl alcohol) (PVA) impregnation prior to the compression treatment. This method enables biocomposites to show desirable isotropic optical and mechanical properties, easily tunable high wood component percentage and UV-blocking ability. The enhanced interfacial bonding between wood particles and PVA polymer, together with a similar refractive index, synergistically contributes to excellent performance. The resulting biocomposites (approximately thickness of 1 mm) possess isotropic optical and UV-blocking properties and have a maximum optical transmittance of 62%. The highest tensile strength and flexural strength can reach 86.8 and 158.8 MPa, respectively. Moreover, they display low thermal conductivity (0.38-0.42 W m(-1) k(-1)) and suitable thermal stability. Therefore, this study provides a new method to optimize the properties of transparent wood-based materials for utilization in energy-saving building fields.