Improvement of PVC Bio-Carrier Surface Property by Remote Plasma
远程等离子体改善PVC生物填料表面性能的研究

The effects of various remote plasma,such as Ar,He,O2 and N2 on PVC bio-carrier surface modification were studied.The surface properties were characterized by the contact angle measurement and X-ray photoelectron spectroscopy(XPS).The role of all kinds of active species such as electrons,ions and free radicals involved in plasma surface modification were evaluated.Results show that the remote plasma treatments modify the PVC surface in both wettability and composition,the(O+N)/C of PVC surface increases from 7% to 22%,and the water contact angle decreases from 97°to 15°.The optimal results was achieved when plasma treatment parameters were set,that is treatment time 3min,Ar flux at 20cm3/s,power at 60W,sample position of 40cm.The results show that the modified PVC Bio-carrier adhesion rate and capacity on the modified surface are greatly increased.