The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Defect-free mixed-matrix membranes (MMMs) based on triptycene-containing polyimide and zeolite imidazole framework (ZIF-90) were prepared in systematically varied compositions using priming and solution-casting method for gas separation. Microstructure analyses confirm that hierarchical triptycene units effectively assist in the nanoparticle dispersion and prevent aggregation, which, in conjunction...
A series of triptycene-based copolyimides with varying backbone rigidity was synthesized and evaluated for chain packing behavior and gas transport properties. These copolymers were composed of a rigid element with the triptycene skeleton directly linked to imide rings and a relatively flexible element containing ether linkage and CF3 substituent groups. The ratio of the two components was systematically...
Cellulose triacetate (CTA) is a workhorse polymeric membrane material for industrial CO2/CH4 separation. This study investigates the doping of CTA with ionic liquids (ILs) to reduce the crystallinity of the CTA and enhance its affinity with CO2, thus increasing CO2 permeability and CO2/light gas selectivity. CTA films doped with 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4]) and 1-ethyl-3-methylimidazolium...
This comparative study focuses on the cyclodehydration reaction of poly(hydroxyamide)s (PHAs) and the thermal rearrangement (TR) reaction of aromatic poly(hydroxyimide)s (APIs) to produce polybenzoxazoles (PBOs) for application as gas separation membranes. Systematic comparisons between the two routes showed that PHA cyclodehydration can produce fully converted PBO membranes at a temperature more...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.