STUDY ON THE IMPROVEMENTS OF POLYPROPYLENE FIBER DYEABILITY BY MEANS OF GRAFTING METHYLMETHACRYLATE

For the purpose to improve the dyeing properties of polypropylene fiber, graft-copolymerization of methylmethacrylate onto the fiber was studied.Polypropylene fiber was pre-treated in benzene solution of benzoyl peroxide, and then graftcopolymerization of methylmethacrylate initiated with benzoyl peroxide was carried out.Polypropylene fiber grafted by such a method can be dyed in deep color with disperse dyes, and their color fastness for light, washing and perspiration are excellent.Mechanical properties of so treated polypropylene fiber was examined, and tenacity, elongation, Young's modulus, location of dye-molecules in fiber etc. are given in tables and figures.