Sawdust Cassava Nr
World Academy of Science, Engineering and Technology 72 2010
Preparation and Some Mechanical Properties of
Composite Materials Made from Sawdust,
Cassava Starch and Natural Rubber Latex
Apusraporn Prompunjai*, Waranyou Sridach
The performance and stability of sawdust-reinforced composite materials depends on the development of coherent interfacial bonding between sawdust and matrix. The general components of sawdust are cellulose, hemicellulose, lignin, pectin, waxes, and water-soluble substances [2], [3].
Cellulose, hemicellulose, and lignin are the main components contributed the strength, flexural, and impact properties of the composites. Moreover the bonding between sawdust and the hydrophobic matrix has effected to the mechanical properties of the composite material.
The major problems of wood composites are associated with the hydrophilic character of the cellulose structure of fiber. To overcome these problems, it is necessary to modify the fiber surface by the physical and chemical methods to reduce the hydrophilic nature of the sawdust and improve the sawdust–matrix bonding. In general, the surface modification by using suitable chemical treatments of the fiber [4]; A significant increase in the strength of composites after treatment of the sawdust have shown that the interface quality of sawdust, cassava starch and NR latex composites could be enhanced through different surface modifications, such as dewaxing, alkali treatment, cyanoethylation, and benzolation.
The alkalization and benzoylation were then applied to sawdust and their influence on the chemical composition and surface structure of the sawdust and matrix adhesion.
The goal of the present work was to studies the use of a hot compression moulding process to prepare the composites based on cassava starch, NR latex and sawdust. It was also aimed to assess the effect of varying the proportion of these three components on the physicochemical and mechanical properties of composites, and the
Preparation and Some Mechanical Properties of
Composite Materials Made from Sawdust,
Cassava Starch and Natural Rubber Latex
Apusraporn Prompunjai*, Waranyou Sridach
The performance and stability of sawdust-reinforced composite materials depends on the development of coherent interfacial bonding between sawdust and matrix. The general components of sawdust are cellulose, hemicellulose, lignin, pectin, waxes, and water-soluble substances [2], [3].
Cellulose, hemicellulose, and lignin are the main components contributed the strength, flexural, and impact properties of the composites. Moreover the bonding between sawdust and the hydrophobic matrix has effected to the mechanical properties of the composite material.
The major problems of wood composites are associated with the hydrophilic character of the cellulose structure of fiber. To overcome these problems, it is necessary to modify the fiber surface by the physical and chemical methods to reduce the hydrophilic nature of the sawdust and improve the sawdust–matrix bonding. In general, the surface modification by using suitable chemical treatments of the fiber [4]; A significant increase in the strength of composites after treatment of the sawdust have shown that the interface quality of sawdust, cassava starch and NR latex composites could be enhanced through different surface modifications, such as dewaxing, alkali treatment, cyanoethylation, and benzolation.
The alkalization and benzoylation were then applied to sawdust and their influence on the chemical composition and surface structure of the sawdust and matrix adhesion.
The goal of the present work was to studies the use of a hot compression moulding process to prepare the composites based on cassava starch, NR latex and sawdust. It was also aimed to assess the effect of varying the proportion of these three components on the physicochemical and mechanical properties of composites, and the
References: [1] Winandy, J.E., Stark, N.M. and Clemons, C.M. 2004. Considerations in recycling of wood-plastic composites. In Proceedings of the 5th International Conference on Global Wood and Natural Fibre Composites 2004. Germany. 27-28 April 2004. P A6-1-9. 934