SciELO - Scientific Electronic Library Online

vol.5 issue1Structural Evaluation and Performance of Portland Cement Concretes After Exposure to High TemperaturesElectrochromic Properties of Sol-gel Coating of Nb2O5 and Nb2O5:Li+ author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Materials Research

Print version ISSN 1516-1439On-line version ISSN 1980-5373


CASTRO VIDAURRE, E.F. et al. Surface Modification of Polymeric Materials by Plasma Treatment. Mat. Res. [online]. 2002, vol.5, n.1, pp.37-41. ISSN 1516-1439.

Low-temperature plasma treatment has been used in the last years as a useful tool to modify the surface properties of different materials, in special of polymers. In the present work low temperature plasma was used to treat the surface of asymmetric porous substrates of polysulfone (PSf) membranes. The main purpose of this work was to study the influence of the exposure time and the power supplied to argon plasma on the permeability properties of the membranes. Three rf power levels, respectively 5, 10 and 15 W were used. Treatment time ranged from 1 to 50 min. Reduction of single gas permeability was observed with Ar plasma treatments at low energy bombardment (5 W) and short exposure time (20 min). Higher power and/or higher plasma exposition time causes a degradation process begins. The chemical and structural characterization of the membranes before and after the surface modification was done by AFM, SEM and XPS.

Keywords : membrane; polysulfone; plasma treatment; gas permeation.

        · text in English     · English ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License