FTIR-AND-ATR ANALYSES ON A POLYPROPYLENE (PP) SURFACE AFTER PLASMA TREATMENT IN THE STUDY OF CHITOSAN SURFACE GRAFTING TO IMPROVE PP DYEINGBEHAVIOR

This study consisted in working on the treatment of a polypropylene (P P) film surface to improve its dyeing behaviour. A plasma treatment wa s carried out to try to create oxidizing groups on this surface, so th at it could be then easier to apply a specific polysaccharide : chitos an which is reported to be much more reactive than PP and easy to dye. A study about the various parameters of the plasma instrument was nec essary to find the optimal treatment. The possible formed oxidizing gr oups were emphasized by FTlR&ATR analyses. Chitosan was applied after the plasma treatment and the dyeing result which was then observed, wa s quite encouraging in certain conditions.