Evaluating the impact of species and glue spread rate on hybrid plywood bonding strength

Yo Evy Ivana Samih and Raja Nadhrah Zuhairah Raja Shahrulnizam and Noor Syazwani Idrus and Awang Ahmad Mohd Yunus and Melissa Sharmah Gilbert Jesuet and Muhammad Aizat Abd Ghani and Roziela Hanim Alamjuri and Naruhito Hori and Akio Takemura and Ismawati Palle (2025) Evaluating the impact of species and glue spread rate on hybrid plywood bonding strength. Journal of the Korean Wood Science and Technology, 53. pp. 429-400. ISSN 017-0715

Text FULLTEXT.pdf Restricted to Registered users only Download (2MB) | Request a copy

Abstract

In this study, we investigated how glue spreading rate and veneer species influence the bonding performance of three-layered hybrid plywood comprising Laran (Neolamarckia cadamba) and Red Seraya (Shorea curtisii) veneers at the faces and core, respectively. We bonded hybrid plywood using phenol formaldehyde (PF) resin at spreading rates of 200, 220, and 240 g/m2. For comparison, we also prepared control samples of three-layered plywood made of 100% Laran and 100% Red Seraya, bonded with PF resin at 220 g/m2. We evaluated veneers for their buffering capacity and wettability, also testing their physical (i.e., moisture content, density, water absorption, and thickness swelling) and mechanical (i.e., elasticity and rupture moduli, as well as shear strength) properties according to ISO standards. We detected significant differences in all properties except for moisture content and shear strength upon BDB pre-treatment. Hybrid plywood demonstrated superior bonding strength compared to 100% Laran plywood, with the high-density Red Seraya core contributing to enhanced mechanical properties. However, a glue spread rate beyond 220 g/m2 induced a decline in mechanical strength, indicating diminishing returns with excess adhesive. These results suggest that while glue spread rate influences plywood properties, species-specific veneer characteristics, such as density and wettability, are key bonding performance determinants.

Item Type:	Article
Keyword:	wettability, shear strength, phenol formaldehyde, Red Seraya, Laran
Subjects:	Q Science > QD Chemistry > QD1-999 Chemistry > QD241-441 Organic chemistry T Technology > TH Building construction > TH1-9745 Building construction > TH7005-7699 Heating and ventilation. Air conditioning
Department:	FACULTY > Faculty of Tropical Forestry
Depositing User:	JUNAINE JASNI -
Date Deposited:	13 Oct 2025 16:25
Last Modified:	13 Oct 2025 16:25
URI:	https://eprints.ums.edu.my/id/eprint/45451

Actions (login required)

View Item