Abstract

The effect of sodium hydroxide on the properties of Vietnamese raw sisal fibres was studied for the applications of treated sisal fibres in the polyolefin-based composites. The results showed the densities decreased from about 7% to 8%, the level of natural moisture absorption by the fibres decreased 32%. The bands of infrared (IR) spectras showed the partial transition from cellulose I to cellulose II due to the change its lignin and hemicellulose components by 18% NaOH at high thermal treatment of 80°C and 100°C.