Combined mechanical and enzyme degumming process of cotton stalk bast fiber

Experiments of combined mechanical and enzyme degumming of cotton stalk bast fiber were performed,and the fuzzy mathematical method was used to optimize the evaluation indexes of orthogonal test of the experimental results,thus solving the problems of inconsistence of optimization conditions between two evaluation indexes.The optimized process parameters obtained for the combined mechanical and enzyme degumming of cotton stalk bast fiber were as follows: enzyme concentration 6%(o.w.f),pH= 4.4,treating at 60 ℃ for 8 hours,thus processed cotton stalk fiber had a residual glue of 8.09% and residual lignin of 9.64%.The chemical structure,micro morphology,and cellulosic structure of the degummed fibers were characterized by FTIR,SEM and XRD.This study offers a theoretical guidance for dyeing of cotton stalk bast fiber and its product development.