Mechanical properties of 3 ply plywood made from Acacia Mangium Veneers and green Starch-based Adhesives

Liew, Chiang Kang (2016) Mechanical properties of 3 ply plywood made from Acacia Mangium Veneers and green Starch-based Adhesives. In: 2nd International Conference on Green Design and Manufacture, IConGDM 2016, 1-2 May 2016, Phuket, Thailand.


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Recently, starch has attracted great consideration as a raw material on wood adhesives in the wood industry. Cassava and sago starchbased adhesive are renewable, biodegradable and environmental friendly product when compared with other petroleum-based adhesives. In this study, different starches-based adhesive has been produced. Mechanical properties of plywood made from Acacia mangium veneers with different starches-based adhesives (cassava and sago) as binder cured at different curing temperatures (100°C, 120°C and 140°C) has been determined. All materials (starch, vinegar, water and glycerol) were cooked and stirred until the mixture reached 70°C-80°C which become sticky and whitish. After that, starch-based adhesives were applied on the veneers by using spreader, and the plywood were pre-pressed for 30 minutes with 20 kg load before hot-press. Cassava starch-based adhesive showed the highest Modulus of Elasticity which was 12410.56 N/mm2 than sago starch-based adhesive, while Modulus of Rupture of the cassava starch-based adhesive at 100°C showed highest mean value at 74.19 N/mm2. Sago-starch based adhesive at 140°C showed the highest shear strength with 1.11 N/mm2. In short, cassava and sago starch-based adhesives gave good performance in mechanical properties such as bending for pressed temperature (100°C and 120°C), and shear at 140°C pressed temperature.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Keyword: Adhesives; Curing; Manufacture; Mechanical properties; Plants (botany); Plywood; Veneers; Wood products Acacia mangium; Cassava starch; Curing temperature; Environmental-friendly; Modulus of rupture; Petroleum based adhesives; Starch-based adhesives; Wood adhesives
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Department: FACULTY > Faculty of Science and Natural Resources
Depositing User: ADMIN ADMIN
Date Deposited: 15 Nov 2016 13:45
Last Modified: 12 Oct 2017 10:30

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