Facile preparation of high-performance plywood adhesive from gelatinized corn starch crosslinked with ammonium dihydrogen phosphate

Jia Y 1 , Luo B 1 , Lee SH 2 , Huang H 3 , Wu Z 4 , Zhou B 1 Show all authors , Zhou X 1 , Zhang J 5

Affiliations 

  • 1 Yunnan Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, China
  • 2 Department of Wood Industry, Faculty of Applied Sciences, Universiti Teknologi MARA Pahang Branch Campus Jengka, 26400 Bandar Tun Razak, Pahang, Malaysia; Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. Electronic address: leesenghua@uitm.edu.my
  • 3 Kunming Xinfeilin wood-based panel Group Co., Ltd, Kunming 650106, China
  • 4 College of Forestry, Guizhou University, Guiyang 550025, China
  • 5 Yunnan Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, China. Electronic address: zj8101274@163.com
Int J Biol Macromol, 2024 Jan;256(Pt 2):128548.
PMID: 38043656 DOI: 10.1016/j.ijbiomac.2023.128548

Abstract

A flame retardant high-performance gelatinized starch (GS)-ammonium dihydrogen phosphate (ADP) wood adhesive, named GS-ADP adhesive was prepared by condensation of GS and ADP under acidic condition. The preparation process of GS-ADP adhesive is very simple by mixing and stirring GS and ADP evenly at room temperature. The results revealed that the GS-ADP adhesive has good storage stability and water resistance, and its wet shear strength is much higher than that of phenolic resin (PF) adhesive. Markedly, the cone calorimeter test results show that G-ADP adhesive has good flame retardancy, and the plywood based on GS-ADP adhesive has good flame retardancy. Meanwhile, it can be seen from dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA) that GS-ADP has excellent modulus of elasticity (MOE), high glass transition temperature (Tg) and good thermal stability. The findings suggest that GS-ADP could be a viable substitute for PF resin in structural wood fabrication.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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