S. M. Osman

Flexural and Impact Properties of Bamboo-Aluminum Sandwich Composites

Investigations have been conducted on the mechanical properties of bamboo-aluminum sandwich composites prototype fabricated in laboratory. Mechanical properties studied were flexural properties and impact properties. The failure mode related to each mechanical property was also observed and reported in this study.

Chemical and thermal characterization of Malaysian bamboo lignin (Beting & Semantan) extracted via soda pulping method

In this study, extraction of lignin from two Malaysian bamboo species known as Semantan (Gigantochloa scortechinii) and Beting (Gigantochloa levis) bamboos was carried via soda pulping method at elevated pressure and temperature in an autoclave. Bamboo lignin was then characterized in terms of functional groups available and thermal characteristics (Glass temperature and thermal decomposition). Spectroscopic analysis revealed that both Semantan lignin (SL) and Beting lignin (BL) have similarity in terms of functional groups with both lignin mainly composed of guaiacyl (G) and syringyl (S) type lignin. Glass temperature (Tg) of Semantan lignin (SL) and Beting lignin (BL) was equivalent to 80.83°C and 75.83°C with mass residue at 800°C was equivalent to 71.2% and 57.28% respectively. Relatively low glass temperature combined with high stability at elevated temperature makes bamboo lignin good potential raw materials for partial substitution of phenol in the development of lignin phenol formaldehyde adhesives.In this study, extraction of lignin from two Malaysian bamboo species known as Semantan (Gigantochloa scortechinii) and Beting (Gigantochloa levis) bamboos was carried via soda pulping method at elevated pressure and temperature in an autoclave. Bamboo lignin was then characterized in terms of functional groups available and thermal characteristics (Glass temperature and thermal decomposition). Spectroscopic analysis revealed that both Semantan lignin (SL) and Beting lignin (BL) have similarity in terms of functional groups with both lignin mainly composed of guaiacyl (G) and syringyl (S) type lignin. Glass temperature (Tg) of Semantan lignin (SL) and Beting lignin (BL) was equivalent to 80.83°C and 75.83°C with mass residue at 800°C was equivalent to 71.2% and 57.28% respectively. Relatively low glass temperature combined with high stability at elevated temperature makes bamboo lignin good potential raw materials for partial substitution of phenol in the development of lignin phenol formaldehyde adhesives.