碱处理对木棉纤维结构及性能的影响

采用质量浓度分别为4、6、8、10、12 g/L的Na OH溶液对木棉纤维进行处理,对比分析了不同质量浓度碱处理对木棉纤维的表面形态、质量损失率、力学性能、浸润性能、热性能以及化学组成等结构及性能的影响。结果表明:碱处理可去除木棉纤维表面的胶质,是纤维素的净化过程;经过适当质量浓度的碱处理,木棉纤维的断裂强力、浸润性能均有所增加,但当碱液质量浓度增加到一定范围时,木棉纤维的断裂强力、浸润性能会出现下降;碱处理对纤维素的热稳定性影响不大。

Influence of alkali treatment on structure and properties of kapok fiber

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.