Abstract
Ethylene vinyl acetate (EVA) mixed matrix membranes (MMMs) were prepared by incorporating fibrous sepiolite modified by 3-aminopropyltrimethoxysilane (3-APTMS). Gas transport through the prepared MMMs was investigated in detail. Permeabilities of O2, CO2, CH4, and N2, gases were significantly increased by the addition of 3wt.% of sepiolite. At the same sepiolite loading, the CO2/CH4 and CO2/N2 selectivity of the MMMs at 5bar were respectively enhanced by 9% and 28.2%, while the O2/N2 selectivity did not notably change and their values remained nearly constant around 2.5–3. The enhanced permeation was attributed to the decreased crystallinity percentage, confirmed by X-ray diffractometry (XRD) and differential scanning calorimetry (DSC). Moreover, XRD results and microscopic images demonstrated that sepiolite fibers were uniformly dispersed in the EVA matrix due to the presence of hydrogen bonding between amino groups of modified sepiolite and carbonyl groups of EVA. Also, upon the incorporation of 3wt.% sepiolite, the tensile strength and elongation at break were simultaneously enhanced by 46% and 76%, respectively.
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.
