Modification of PVDF properties by dielectric barrier discharge treatment

Abstract

Films of polyvinylidene fluoride (PVDF) were treated in a dielectric barrier discharge (DBD) in helium, For different exposure times. Modification of PVDF properties was followed by: contact angle measurements, ATR-FTIR spectrometry and scanning electron microscopy. The applied treatment led to the obtainment of polar surfaces, With biocompatibility characteristics. These enhancements in PVDF properties after plasma exposure, Associated with the possible increase of the polymer roughness, Could lead to an enhanced adhesion with other materials, Condition which has to be fulfilled for a series of applications (e.g.: biosensors).