Functional modification of surface anti-contamination and self-cleaning of textile coated by PVDF

For preparation of an architecture membrane with anti-contamination and self-cleaning functional properties,a method combining low temperature plasma treatment and UV-induced photografting was used.Firstly,the PVDF films were treated by oxygen plasma,and effects of treating time on surface hydrophobic property and surface morphology were studied.Then the treated films were modified by UV-induced photografting.The effect of the amount of initiator and concentration of monomer on the grafting percentage and hydrophobic property was investigated,and an architecture membrane with anti-contamination and self-cleaning was thus obtained.The result showed that the contact angle of the surface treated by the method was 150° and the dynamic contact angle was lower than 5°.According to the dust collecting experiment,the surface of the membrane has good anti-contamination and self-cleaning functions.