Comprehensive Study on the Process of Cotton Fiber Hydrolysis by Dilute Hydrochloric Acid

Focused on the cotton fibre hydrolysis with dilute hydrochloric acid as catalyst.The form's change of cotton fiber was observed by SEM and the crystalline structure of that was determined by X-ray diffraction.Results showed that under the atmospheric conditions,thick hydrochloric acid mass fraction,high reaction temperature and long reaction time all could impromote the hydrolysis of cotton fibers effectively.The influence of the solid-liquid weight ratio on the hydrolysis reaction was proved to be compositive,and the hydrolysis reaction was along with the change of cotton fiber form and crystallinity.Under the experimental conditions,the best process parameters were obtained as the following: the mass ratio of hydrochloric acid is 9.5 percent,the reaction temperature is 95℃,and the solid-liquid weight ratio is 4∶100.