The Study of Graft Copolymerization of TDI-100 onto Ramie Fiber

Graft copolymerization of TDI onto ramie fibers has been studied using ramie yarn and mercerized degummed ramie as starting materials.The graft copolymers were investigated using FT-IR,UV and DSC.Experimental results show that the optimum reaction conditions of grafting are TDI 2 mL per gram ramie fibers,H_2SO_4 as catalyst,temperature 60 ℃ and time 10 h.On the same conditions,the grafting ratio and yield of alkali-treated ramie as raw material are more high.The graft copolymers are synthesized by oneNCO of the TDI functional groups reacts on ramie.