Grafting of DMDAAC onto polypropylene nonwoven fabric by plasma treatment

The argon low temperature plasma was used to graft diallyl dimethyl ammonium chloride(DMDAAC) onto polypropylene(PP) nonwoven fabric for improving its surface performance and antibacterial ability.The fabric had been presoaked in the monomer solution of DMDAAC and subsequently treated with low temperature plasma for grafting.The grafting percentage was characterized by acid red dye combination amount.The optimum plasma treatment conditions were determined by orthogonal experiments as follows: a pressure of 30 Pa and 250 W discharge power for 25 min.The combination amount of dye to the grafted fabric was 151.4μg/cm2.The element compositions on the grafted fabric surface,thermal stability and hydrophilicity were characterized by XPS,TG and Moisture Management Tester.The antibacterial ability was tested by Halo test and modified AATCC Test Method 100.The result of XPS showed that there was nitrogen on the surface of the grafted fabric,the hydrophilicity and thermal stability of the grafted PP fabrics were improved greatly,and it had antibacterial ability.