Polymer, Vol.149, 117-123, 2018
Ultrahigh oxygen permeability of chemically-modified membranes of novel (co) polyacetylenes having a photodegradative backbone and crosslinkable side chains
Four new partly modified membranes of novel (co)polyacetylenes having a photodegradative backbone and crosslinkable side chains showed excellent performances as oxygen permselective membranes, that is, ultrahigh oxygen permeability (P-O2) with relatively high oxygen permselectivity (alpha = PO2/PN2). In alpha vs. PO2 plots, two of them showed a performance close to Robeson's upper bound 2008 and the other two exceeded Robeson's upper bound 1991. The combination of the rigid main chain of the (co) polymers, the regular structure of the supramolecular polymer, and the flexible crosslinking structure may have produced these excellent performances. (C) 2018 Elsevier Ltd. All rights reserved.