文献类型：期刊文献

英文题名：Low-Odor High-Density Fiberboard Enabled by Supramolecular Interactions in Wood Fibers

作者：Yu, Xia[1,2] Fu, Zongying[2] Liu, Bo[2] Guo, Xiaoxuan[2] Lu, Yun[2] Yao, Lihong[1]

第一作者：Yu, Xia

通信作者：Yao, LH[1];Lu, Y[2]

机构：[1]Inner Mongolia Agr Univ, Coll Mat Sci & Art Design, Hohhot 010018, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Key Lab Wood Sci & Technol, Natl Forestry & Grassland Adm, Beijing 100091, Peoples R China

年份：2026

卷号：18

期号：2

外文期刊名：POLYMERS

收录：;EI(收录号：20260519993316);Scopus(收录号：2-s2.0-105028657228);WOS:【SCI-EXPANDED(收录号:WOS:001670413300001)】；

基金：We acknowledge funding support from the National Natural Science Foundation of China (Grant No. 32371797), the Natural Science Foundation of Inner Mongolia Autonomous Region (Grant No. 2025MS03077), the Major Science and Technology Special Project of Inner Mongolia Autonomous Region (Grant No. 2024JBGS0013-02), and the Bayannur Municipal Science and Technology Program Project (Grant No. K2024085).

语种：英文

外文关键词：oxidative treatment; tannic acid; supramolecular interactions; low-odor; high-density fiberboard

摘要：The development of sustainable wood-based composites has driven increasing interest in formaldehyde-free, low-odor, and recyclable bonding systems. However, achieving high mechanical performance and dimensional stability in high-density fiberboards (HDFs) without synthetic adhesives remains a challenge. Here, we report a two-step strategy combining oxidative pretreatment of wood fibers with supramolecular assembly of tannic acid (TA) and sodium ions (Na+) to fabricate low-odor, recyclable HDF. Oxidation generated abundant carboxyl groups on the fiber surface, enabling strong coordination and hydrogen-bonding interactions between TA and Na+, which constructed robust inter-fiber supramolecular networks without formaldehyde-based adhesives. The resulting HDF exhibited excellent mechanical properties, with an internal bond strength of 3.1 MPa, a modulus of rupture of 49 MPa, and 24 h water thickness swelling of only 12%. Odor and VOC analysis revealed only trace benzene, demonstrating markedly low odor. Furthermore, the reversible nature of Na+-TA interactions allowed efficient fiber separation and recyclability under mild aqueous conditions. This oxidation-assisted supramolecular approach provides a sustainable route for producing high-performance, low-odor, and recyclable fiberboards, offering a viable alternative to conventional polymer-bonded wood composites.