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Xiao G, Liang J, Li D, Tu Y, Zhang B, Gong F, Gu W, Tang M, Ding X, Wu Z, Lei H. Fully Bio-Based Adhesive from Tannin and Sucrose for Plywood Manufacturing with High Performances. Materials (Basel) 2022; 15:8725. [PMID: 36556528 PMCID: PMC9782220 DOI: 10.3390/ma15248725] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/25/2022] [Accepted: 12/03/2022] [Indexed: 06/17/2023]
Abstract
Fully bio-based adhesives are beneficial to reduce the dependence of the wood adhesive industry on synthetic resins based on petrochemical resources and enhance the market competitiveness of adhesives. A fully bio-based wood adhesive composed of tannin and sucrose was developed and successfully used in the preparation of plywood. Effects of the preparation technology on the bonding strength and water resistance of plywood were investigated, and the properties of the adhesive were analyzed by Fourier transform infrared spectroscopy (FT-IR), thermogravimetry (TG) and X-ray diffraction (XRD) in this study. The results showed that: (1) Compared with other biomass adhesives, tannin-sucrose adhesive had the characteristics of high-solid content and low viscosity, which had the potential to prepare particleboard and fiberboard. (2) A proper mass ratio of tannin to sucrose was key to obtaining a tannin-sucrose adhesive with better properties. (3) The optimum preparation process of tannin-sucrose adhesive for plywood was as follows: hot-pressing temperature of 210 °C, hot-pressing time of 1.2 min/mm, m(tannin):m(sucrose) of 60:40 and adhesive loading of 160 g/m2. Under these conditions, the water-resistant bonding strength of the plywood was 0.89 MPa, which met the strength requirements of the Type II standard of plywood in GB/T 17657-2013. (4) The hot-pressing temperature played a decisive role in the tannin-sucrose adhesive, and the good performance of the plywood was maintained when the temperature was 210 °C or above. Thus, the prepared tannin-sucrose adhesive had high-bonding strength, good water resistance and thermal stability.
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Affiliation(s)
- Guoming Xiao
- College of Forestry, Guizhou University, Guiyang 550025, China
| | - Jiankun Liang
- College of Civil Engineering, Kaili University, Qiandongnan 556011, China
| | - De Li
- College of Forestry, Guizhou University, Guiyang 550025, China
| | - Yuan Tu
- College of Forestry, Guizhou University, Guiyang 550025, China
| | - Bengang Zhang
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, China
| | - Feiyan Gong
- College of Forestry, Guizhou University, Guiyang 550025, China
| | - Wen Gu
- College of Forestry, Guizhou University, Guiyang 550025, China
| | - Min Tang
- College of Forestry, Guizhou University, Guiyang 550025, China
| | - Xinyue Ding
- College of Forestry, Guizhou University, Guiyang 550025, China
| | - Zhigang Wu
- College of Forestry, Guizhou University, Guiyang 550025, China
| | - Hong Lei
- School of Chemistry and Material Engineering, Zhejiang A&F University, Hangzhou 311300, China
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