Research On Dyeing-Finish Performance Of Tussah Fibers Treated With Chitosan

Chitin is one of the natural high polymers deposited in the world except cellulose。Chitosan can be produced by deacetylation. Chitosan is the only existed large amount of alkaline mucopolysaccharide in natural saccharides. It has many specific physical and chemical quality and physiological functions. It has great practical value in textile, dyeing, paper-manufacture, food, chemstry, envirement protection, agriculture and medicine.Chitosan is specifically used in developing high-added value green products. it can be the excellent functional natural green textile finishing agent. It is used in many ways in the application of mulberry silk and cotton fibers. it will be helpful in promoting well-proportioned dyeing , dyeing rate, and improveing the antibacterial and shrink proof and electrostatic prevention effectIt is very scare in the research on the application of chitosan and its application in tussah fibers in our country, as well as in other countries. Functional modification on tussah fibers with chitosan can be realised to make tussah fibers possess the qualities of antibacterial and shrink proof and promotion of dyeing rate so as to promote techniques and high added valuesThe article shows the research on oxidative degradation of chitosan and its effect on tussah fibers dyeing and shrink proof finishingThe result of experiments show that with the addition of the proportion of peroxide, the molecular weight for degradation of chitosan gradually declines; Chitosan can promote the percentage of dyeing rate of acid color, neutral dyes and reactive dyes in tussah fiber dyeing. After the finishing of tussah fibers by the citric acid solution of chitosan and maleic anhydride, its quality of shrink proof is promoted obviously.