Grafting process of cotton fabric with β-cyclodextrin prepolymer

In order to bring some special functions to cotton fabrics,water-soluble β-cyclodextrin prepolymer(β-CDP) which was prepared with epichlorohydrin as a cross-linking agent in an alkaline medium was grafted onto cotton fiber using citric acid(CA) as a cross-linking agent and sodium hypophosphite(SHP) as a catalyst by the pad-dry-cure technique.The effects of the concentrations of CA,β-CDP and SHP,curing temperature and time on the properties of finished fabric were studied.The optimum grafting conditions were as follows: β-CDP 30 g/L,CA 50 g/L,SHP 30 g/L,cured at 180 ℃ for 2.5 min.The results showed that properties of the fabric grafted with β-CDP were better than those with β-CD.The β-CDP grafted fabric has improved fragrance absorption and controlled release ability,with whiteness,breaking strength and wrinkle recovery angle enhanced slightly.