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Physico-mechanical properties and formaldehyde emission of rubberwood particleboard made with UF resin admixed with ammonium and aluminium-based hardeners


Citation

Abd Ghani, Muhammad Aizat and Bawon, Paiman and Lee, Seng Hua and Ashaari, Zaidon (2019) Physico-mechanical properties and formaldehyde emission of rubberwood particleboard made with UF resin admixed with ammonium and aluminium-based hardeners. Pertanika Journal of Science & Technology, 27 (1). pp. 473-488. ISSN 0128-7680; ESSN: 2231-8526

Abstract / Synopsis

In this study, the effects of addition of ammonium and aluminium-based hardeners into urea formaldehyde resin (UF) on the physico-mechanical properties and formaldehyde emission of the rubberwood particleboard were investigated. Four types of hardeners, namely ammonium chloride (AC), ammonium sulphate (AS), aluminium chloride (AlC) and aluminium sulphate (AlS), were added into UF resin. The acidity, gelation time, viscosity and free formaldehyde content of the UF/hardener mixtures were determined. Particleboard made with the UF/hardener mixtures were tested for physico-mechanical properties and formaldehyde emission. The pH values of the resin after addition of aluminium-based hardeners were higher and resulted in higher viscosity and shorter gelation time. Consequently, despite lower formaldehyde emission was recorded, the physico-mechanical properties of the resulted particleboard were inferior compared to that of ammonium-based hardeners. The best quality particleboard in terms of mechanical, physical and formaldehyde emission were obtained from the particleboard made with AS, followed by AC.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Forestry
Institute of Tropical Forestry and Forest Products
Publisher: Universiti Putra Malaysia Press
Keywords: Ammonium; Aluminium; Hardener; Formaldehyde emission; Particleboard
Depositing User: Nabilah Mustapa
Date Deposited: 08 Mar 2019 14:27
Last Modified: 08 Mar 2019 14:27
URI: http://psasir.upm.edu.my/id/eprint/67242
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