Abstract:

NaOH solution  concentrations of 4,6,8,10 and 12 g/L respectively were used for alkali treatment of kapok fiber, the influence of alkali treatment of different concentration on structure and performanecs of surface morphology of kapok fiber, weight loss rate, mechanical properties, infiltrating performance, thermal performance and chemical composition and analyzed. The results showed that alkali treatment can remove colloid on the surface of kapok fiber, and is a purification process of cellulose; by proper alkali treatment, the breaking strength and infiltration performance of kapok fiber are increased, but when the alkali solution concentration increases to a certain range, the breaking strength and infiltration performance of kapok fiber will decrease; and the influence of alkali treatment on the thermal stability of cellulose is very small.

Key words: kapok diber, alkali treatment, structure, property