文献类型：期刊文献

英文题名：High-performance self-bonding bio-composites from wood fibers

作者：Chen, Yuan[1] Zhang, Yiyuan[1] Cao, Yuan[2] Guo, Dengkang[1] Li, Gaiyun[1] Qing, Yan[3] Wu, Yiqiang[3]

第一作者：陈媛

通信作者：Li, GY[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, 1 Dongxiaofu Xiangshan Rd, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[3]Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China

年份：2024

卷号：209

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20240115310461);Scopus(收录号：2-s2.0-85181147408);WOS:【SCI-EXPANDED(收录号:WOS:001150183000001)】；

基金：We gratefully thank the foundation support from the National Natural Science Foundation of China (31890771) . We also thank Dr. Dan-dan Yin from the National Key Laboratory of Chinese Academy of Forestry for assistance with the scanning electron microscope observation.

语种：英文

外文关键词：Bio-composites; Self-bonding; Particle size high strength; Eco-friendly

摘要：Green and low-carbon bio-composites from wood fibers are in great demand in the further due to the global sustainable development. In this work, we successfully manufactured the fully bio-composites with excellent mechanical properties and improved water resistance using the dialdehyde wood fibers as the "glue" and untreated poplar wood fibers with lower particle size. The high reactive aldehyde groups provided internal chemical connection between fiber compositions and uniform size offered tightly connected structure and physical winding, which were synergistically contributed to superior performances of self-bonding bio-composites. The self-adhesive bio-composites owned outstanding flexural strength (105.2 MPa), tensile strength (35.6 MPa), internal bond strength (5.1 MPa), and hardness (0.3 GPa), better than most of the reported non-adhesive biomass materials. An innovative hydrobromic acid destruction method was used to prove the self-assembly mechanism and contributions. Both of the direct characterization and reverse destruction illustrated the covalent and hydrogen bond synergistic self-adhesive contribution of dialdehyde oxidation and homogenization. The self-bonding bio-composites have the potential to be applied to high strength outdoor household materials and structural buildings, which corresponds with the notions of carbon storage, eco-friendly, and degradation.