Preparation of hydrophobic-antibacterial fabric through plasma technique and its properties
In order to solve the problems of complex preparation process,poor comfort and unstable performance of waterproof and antibacterial fabrics,water is used as dispersion medium,polydimethylsiloxane(PDMS)as low surface energy monomer,and silicone quaternary ammonium salt(QAS)as antibacterial agent,and then hydrophobic antibacterial polyester fabric(PDMS/QAS@PET)with good durability is prepared by a simple plasma surface activation-impregnation-plasma induced crosslinking(PDP)process.The results show that when the concentrations of PDMS and QAS in the dispersion solution are 5 g/L and 2 500 mg/kg,respectively,the hydrophobicity and bacteriostatic stability of PDMS/QAS@PET fabric are the best.The static water contact Angle(WCA)is 158°,and the bacteriostatic rate against Escherichia coli and Staphylococcus aureus can reach 99.99%.After 50 washing cycles,WCA is still higher than 145°,and the antibacterial rate against Escherichia coli and Staphylococcus aureus is still higher than 80%.