Abstract
Electrospun-poly(vinylidenefluoride cohexafluoro-propylene) (PVDF-HFP) micro-fiber membrane is modified by cyclonic atmospheric pressure plasma. The gas phase temperature of cyclonic atmospheric pressure plasma state was around 30°C to 90°C, indicating this plasma can treat electrospun PVDF-HFP membrane without harmful heat damages. The surface properties of cyclonic atmospheric pressure plasma-treated electrospun PVDF-HFP micro-fiber membranes were examined by the static contact angle analysis. The influence of plasma treatment time on the electrospun PVDF-HFP micro-fiber membrane surface was studied. It was found that such cyclonic atmospheric pressure plasma is useful in PVDF-HFP micro-fiber membrane surface modification, the reduced water contact angle was observed from 137° to less than 30° with only 1 min. treatment time. Scanning electron microscopy (SEM) was used to determine the changes in surface feature of the PVDF-HFP micro-fiber membrane due to plasma treatment. In this investigation, it shows an innovative method for electrospun micro-fiber membrane surface modification by cyclonic atmospheric pressure plasma.
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