Custom-designed polyphenol lignin for the enhancement of poly(vinyl alcohol)-based wood adhesive

Tingting Liu; Yanfan Yang; Li Yan; Biying Lin; Lin Dai; Zhanhua Huang; Chuanling Si

doi:10.1016/j.ijbiomac.2023.129132

Custom-designed polyphenol lignin for the enhancement of poly(vinyl alcohol)-based wood adhesive

Int J Biol Macromol. 2024 Feb;258(Pt 2):129132. doi: 10.1016/j.ijbiomac.2023.129132. Epub 2024 Jan 2.

Authors

Tingting Liu¹, Yanfan Yang¹, Li Yan¹, Biying Lin¹, Lin Dai², Zhanhua Huang³, Chuanling Si⁴

Affiliations

¹ State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.
² State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, College of Material Science and Engineering, Northeast Forestry University, Harbin, China. Electronic address: dailin@tust.edu.cn.
³ Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, College of Material Science and Engineering, Northeast Forestry University, Harbin, China. Electronic address: huangzh1975@163.com.
⁴ State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China. Electronic address: sichli@tust.edu.cn.

PMID: 38171433
DOI: 10.1016/j.ijbiomac.2023.129132

Abstract

Adhesives are used extensively in the wood industry. As resource and environmental issues become increasingly severe, the development of green and sustainable biomass-based adhesives has attracted increasing attention. In this work, a green wood adhesive is developed from poly(vinyl alcohol) and lignin with molecular designs of lignin extending beyond those in nature. The lignin undergoes extraction from corncob residue, aldehydration, and phenolisation (phenol, resorcinol, and catechol) to significantly increase the phenolic hydroxyl groups (over 7.92 mmol/g), which has the effect of enhancing the hydrogen bonding force between the adhesive and the wood, thereby greatly improving adhesive performance. Compared with pure PVA, polyphenol lignin-containing PVA showed improved adhesion strength and hydrophobicity. PVA/resorcinol-lignin has the significantly improved wood lap shear strength (6.27 MPa, 77.6 % improvement) and hydrophobicity (almost 100 % increase in wet shear strength). This research not only provides a green and high-performance alternative raw material for wood adhesives but also broadens the path for large-scale application of biomass.

Keywords: Biomass-based adhesives; Lignin; Lignin modification; Poly(vinyl alcohol); Wood adhesive.

MeSH terms

Adhesives / chemistry
Lignin* / chemistry
Methanol
Phenols / chemistry
Polyphenols* / analysis
Polyvinyl Alcohol
Polyvinyl Chloride
Resorcinols
Wood / chemistry

Substances

Polyphenols
Lignin
Polyvinyl Alcohol
Adhesives
Phenols
Methanol
Polyvinyl Chloride
resorcinol
Resorcinols