Activated wood flour as adhesives for bonding activated wood veneer to produce sustainable wood composites

被引：11

作者：

Liu, Sichen ^{[1
]}

Gu, Min ^{[1
]}

Yu, Jiaojiao ^{[1
]}

Ni, Kelu ^{[1
]}

Li, Hongshan ^{[1
]}

Wang, Hao ^{[1
]}

Huang, Tenghua ^{[1
]}

Yang, Hongxing ^{[1
]}

Du, Guanben ^{[1
,2
]}

Yang, Long ^{[1
,2
]}

机构：

[1] Southwest Forestry Univ, Int Joint Res Ctr Biomass Mat, Yunnan Prov Key Lab Wood Adhes & Glued Prod, Kunming 650224, Peoples R China

[2] Southwest Forestry Univ, Key Lab Forest Resources Conservat & Utilizat Sout, Minist Educ, Kunming 650224, Peoples R China

来源：

INDUSTRIAL CROPS AND PRODUCTS | 2024年 / 211卷

基金：

中国国家自然科学基金;

关键词：

Wood flour; Oxidation; Active gluing interface; Multi-crosslinked networks; Plywood; HYPERBRANCHED POLYMERS; PLASTIC COMPOSITES; PERFORMANCE; PROTEIN; CELLULOSE; BIOMASS; OXIDATION; IMPROVE; LIGNIN; FILLER;

D O I：

10.1016/j.indcrop.2024.118310

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The use of biomass as a binder for the development of high -performance wood products has become a popular research topic in the context of sustainable development. In this work, wood flour obtained from agroforestry processing residues was used as an active functional filler. The wood flour was oxidized and chemically crosslinked with hyperbranched polyamines and used as a binder matrix. By applying the same oxidative treatment to the wood surface, a chemically activated bonding interface was formed. Analysis by FTIR, 13C NMR, XPS and XRD characterization showed that the key to the improved bonding property was the formation of multiple covalent cross-linked networks during hot pressing of the plywood. It is clear that the specimens with untreated wood surfaces showed no water resistance and the dry strength was only above the standard value. On the contrary, after activation of the veneer surfaces, the bond strength and water resistance were significantly improved, meeting the requirements of GB/T 17657-2013 for Class I panels. Activation of the chemically active adhesive interface by oxidation of wood materials is an effective means of improving the performance of plywood, and also provides a new idea for high-value utilization of biomass resources.

引用

页数：10

共 56 条

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