Effects of weathering on mechanical properties and surface roughness of Endospermum malaccense wood modified with propionic anhydride

• Autorzy: Uyup Mohd Khairun Anwar , Lee Seng Hua , Husain Hamdan , Siam Nordahlia Abdullah , Jasmani Latifah

Identyfikatory

DOI

10.12841/wood.1644-3985.360.06

• Języki publikacji: EN

Abstrakty

EN

This study evaluated some properties of sesenduk (Endospermum malaccense) wood treated with propionic anhydride and exposed to outdoor conditions for up to one year. Defect-free samples of sesenduk were extracted with a 3:1:1 (v/v) mixture of toluene, ethanol and acetone for 3 hours at a temperature of 100°C. The samples were then modified at the same temperature for another 3 hours using propionic anhydride and 10% sodium formate as catalyst. Modulus of elasticity (MOE), modulus of rupture (MOR) and parallel-to-grain compression strength of the samples exposed to weathering were tested. Chemical treatment reduced the MOE but slightly increased the MOR and parallel-to-grain compression strength compared with untreated samples. However, treated samples retained higher strength properties than untreated ones. The modulus of elasticity, modulus of rupture and parallel-to-grain compression strength of treated samples at radial orientation were respectively 20%, 31% and 62% higher than those of untreated samples after one year’s outdoor exposure. Weathering adversely influenced the surface quality of the specimens for all exposure times.

Słowa kluczowe

EN

chemical modification; weathering; mechanical properties; surface quality; sesenduk (Endospermum malaccense)

• Wydawca: Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
• Czasopismo: Drewno : prace naukowe, doniesienia, komunikaty
• Rocznik: 2021
• Tom: vol. 64, nr 207
• Strony: 101--110
• Opis fizyczny: Bibliogr. 19 poz., rys., tab.

Twórcy

autor

Uyup Mohd Khairun Anwar

• Forest Products Division, Forest Research Institute Malaysia, Selangor, Malaysia

autor

Lee Seng Hua

• Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, Selangor, Malaysia

autor

Husain Hamdan

• Forest Products Division, Forest Research Institute Malaysia, Selangor, Malaysia

autor

Siam Nordahlia Abdullah

• Forest Products Division, Forest Research Institute Malaysia, Selangor, Malaysia

autor

Jasmani Latifah

• Forest Products Division, Forest Research Institute Malaysia, Selangor, Malaysia

Bibliografia

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• List of standards
• BS 373:1957 Methods of testing small clear specimens of timber

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).