Abstract
AbstractIn this study, the polyurethane (PU)/nylon 6(3) blend membranes were developed for gas separation applications, and influence of blending Nylon 6(3) in PU on the microstructure, and separation performance of the blend membranes was investigated. The PU was synthesized via a two‐step polymerization technique. The blend membranes were characterized by SEM, DSC, XRD, and FTIR analysis. The SEM results showed that the blend membranes containing 20 wt% or less nylon 6(3) had less interaction than those containing higher nylon 6(3) contents. At 50 wt% of nylon 6(3), the compatibility between two polymers and reducing CO2permeability was observed. The blending of nylon 6(3) into the PU matrix decreased the chain mobility of the membrane, increased the membrane crystallinity, and led to a rough microstructure. The neat PU and nylon 6(3) membranes had the CO2/N2selectivity of 43.1 and 14.2, respectively, while the PU60/PA40 blend membrane had the CO2/N2 selectivity of 61.9. The PU50/PA50 blend showed the highest selectivity (22.4) for CO2/CH4 separation. The CO2, CH4, and N2permeabilities in all membranes were enhanced by increasing upstream pressure.
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.
