abstract |
The present invention discloses a new type of high selectivity UV-cross-linked tetrazole group functionalized polymer nanosieve (TZPIM) membranes, their preparation, as well as their use for gas and liquid separations. The UV-cross-linked TZPIM membrane showed more than 50% improvement in CO 2 /CH 4 selectivity and more than 30% improvement in CO 2 /N 2 selectivity compared to the uncross-linked TZPIM membrane for CO 2 /CH 4 and CO 2 /N 2 separations, respectively. |