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US 12,344,713 B2Granted
Crosslinked polyphosphazene blends for gas separation membranes
AssigneeEnergy, United States Department of
InventorsDavid Hopkinson, Victor Armanda Kusuma, Surendar R. Venna, Joshua S. McNally, Christopher J. Orme, Frederick F. Stewart
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Abstract
The disclosed invention relates to a composition comprising a crosslinked blend of polyphosphazene polymers. The composition comprises a first polyphosphazene and a second polyphosphazene, where the first polyphosphazene and the second polyphosphazene being bound by a thiol bearing crosslinking agent. Such compositions are useful as a membrane material for the separation of gasses in a gaseous mixture.
Claims16
A composition comprising at least a first polyphosphazene and a second polyphosphazene,
- wherein the first polyphosphazene has the formula
- where R comprises 50% to 95% ethoxylate and 5% to 50% aryloxy, and
- where at least a portion of R comprises a crosslinked functional group;
- wherein the second polyphosphazene has the formula
- where R′ are aryloxy groups, and where at least a portion of R′ comprises a crosslinked functional group;
- and
- wherein the first polyphosphazene and the second polyphosphazene are bound by a crosslinking agent where the crosslinking agent comprised two or more thiol groups prior to undergoing crosslinking.
4 more elements
Dependencies are inferred from the claim text.