- Tytuł:
- 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 - Powiązania:
- https://bibliotekanauki.pl/articles/2010785.pdf
- Data publikacji:
- 2021
- Wydawca:
- Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
- Tematy:
-
chemical modification
weathering
mechanical properties
surface quality
sesenduk (Endospermum malaccense) - Opis:
- 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.
- Źródło:
-
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2021, 64, 207; 101-110
1644-3985 - Pojawia się w:
- Drewno. Prace Naukowe. Doniesienia. Komunikaty
- Dostawca treści:
- Biblioteka Nauki
Artykuł