Research Papers by Denis Roizard

The synthesis of mixed matrix materials was successfully realized with active carbon fillers and PDMS. These materials were characterized by SEM pictures and by CO2 sorption. The incorporation of active carbon could reach up to 70 wt% and we find at least 60% of sorption capacity in the studied case

In the present work the permeability and separation and properties of homogeneous polymeric films and composite polymeric membranes based on PTMSP for removing hydrocarbons from gas mixtures were studied. The dependence of permeability for single N2, CH4, n-C4H10 on feed pressure was obtained. The b

Several types of composite membranes were prepared out of cellulose derivatives and carbon fillers and it was found that the preparation of improved composite materials was strongly related to the polymer-filler contact and adhesion. After careful selection and conditioning of the fillers, mixed mat

The time-lag method can be easily used to characterize transport polymer features for permanent gases whereas with volatile organic vapors (VOCs) this routine procedure does not give valuable results, in particular in case of diffusion varying with activity, swelling of the polymer or small time-lag