In this project, we will consider the PDMS surface modification by means of plasma activation and further chemical functionalization with bio-sourced molecules extracted from natural sources. The ICMMO group has so far shown the feasibility of grafting chemical species after plasma treatment on PDMS [10]. The generation of the plasma in catheters will be then studied and intensified camera imaging (ICCD) will be used to monitor the spatio-temporal dynamics of the plasma. The LPGP group is equipped with a high-resolution mass spectrometer (FT ICR system) [11], which will be used to assess the action of the plasma on the tubes surfaces, through the detection of the organic species resulting from this action and coming out of the catheter in the gas flow. The goal is to identify and quantify those molecular species to get insight into the physico-chemical processes involved in the
plasma-tube interaction. The analysis of the grafting process will be conducted through analytical tools available at the ICMMO (ATR-FTIR, XPS, AFM, SEM, contact angle measurements, NMR,…) or through collaborations (ToF SIM, confocal laser-scanning microscopy,…).
