文献类型：期刊文献

英文题名：Thermo-reversible transparent wood with tunable optics and mechanics?for energy-efficient windows

作者：He, Linhan[1] Fan, Yafei[1] Chen, Yao[1] Huang, Yuxiang[2]

第一作者：He, Linhan

机构：[1] Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing, 100083, China; [2] Research Institute of Wood Industry, Chinese Academy of Forestry, Haidian, Beijing, 100091, China

年份：2026

卷号：9

期号：1

外文期刊名：Advanced Composites and Hybrid Materials

收录：EI(收录号：20260119846662);Scopus(收录号：2-s2.0-105026133912)

语种：英文

外文关键词：Architecture - Ethylene - Ethylene glycol - Glass - Heat storage - Intelligent buildings - Memory architecture - Scaffolds - Wood

摘要：Transparent wood (TW) has emerged as a promising alternative to glass for sustainable architecture, yet its rigid and passive nature limits its adaptability for dynamic light and temperature regulation. We report a thermally reversible transparent wood (TRTW) featuring a semi-interpenetrating polymer network architecture constructed from polyethylene glycol (PEG) and poly (ethylene glycol) diacrylate (PEGDA) infused into a delignified wood scaffold. This architecture enables reversible transitions between stiff and soft states via PEG crystallization/melting and dynamically modulates light transmittance (from 80.6% to 48.2%) through refractive index mismatch. The TRTW exhibits excellent shape adaptability at elevated temperatures (bendability exceeding 170°), enhanced toughness (elongation increased by 540%), and superior impact resistance (9.81 kJ/m2, ~ 12× that of glass). It also features an adjustable phase transition temperature (Tm ≈ 30?°C, Tc = 12.96–18.85?°C) and high latent heat (up to 95.8?J/g), enabling heat storage and temperature buffering for passive building energy regulation. The synergy of thermo-reversible optics and mechanics within a wood-based framework provides a novel strategy toward intelligent and energy-efficient building skins and optical devices. ? The Author(s) 2025.