Abstract
The structure and gas transport properties of polymer membranes prepared from commercial Lavsan™ (polyethylene terephthalate based material) films by irradiation of the polymer films with Ar ions, followed by etching in an NaOH solution, were studied. Analysis of the polymer structure by differential scanning calorimetry showed that irradiation of the Lavsan™ matrix with Ar ions (energy 2.4 MeV nucleon−1, fluence 6 × 107 cm−2) led to a 20–30% decrease in the degree of crystallinity. The permeability of the new membranes to He, H2, O2, Ar, N2, CH4, CO2, and H2/CH4 mixture was evaluated. UV sensitization allows a fourfold increase in the permeability of the Lavsan™-based films to the gases tested relative to the films etched without preliminary UV irradiation. The composition of the H2/CH4 gas mixture does not influence the separating properties of the membranes, and the mixture separation factor coincides with the ideal value of the gas selectivity.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
