Preparation of chitosan guanidine hydrochloride and application thereof in antimicrobial finishing of wool fabric

Antimicrobial chitosan guanidine hydrochloride was synthesized by reacting chitosan guanidine sulfite with concentrated hydrochloric under microwave irradiation. The structures of guanidinylated chitosan were characterized by FT-IR and13 CNMR. Chitosan guanidine hydrochloride was applied to the antimicrobial finishing of wool fabric and the influences of finishing conditions including antimicrobial agent mass concentration,curing temperature and curing time on the antimicrobial effect and physical mechanical properties were researched. The results show that antimicrobial chitosan guanidine hydrochloride was synthesized successfully under microwave irradiation. The optimal process parameters for finishing agent on wool fabric are as followed: mass concentration of chitosan guanidine hydrochloride of 10 g / L,curing temperature of 130 ℃ and curing time of 5 min.