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US 10,369,529 B2Granted
Mixed matrix membranes with embedded polymeric particles and networks and related compositions, methods, and systems
AssigneesCalifornia Institute of Technology, Korea Advanced Institute of Science and Technology
InventorsMamadou S. Diallo, Madhusudhana Rao Kotte
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Abstract
Described herein are mixed matrix filtration membranes and related, compositions, methods and systems and in particular mixed matrix filtration membranes with an embedded polymer network and/or embedded polymeric micro/nanoparticles functionalized with a functionalization polymer covalently and/or non covalently linked to the micro/nanoparticles and related compositions, methods, and systems.
Claims24
A filtration membrane comprising:
- hyperbranched polymeric molecules covalently cross-linked to form polymeric microparticles and/or nanoparticles embedded in a polymer matrix
- wherein the polymer matrix comprises a porous polymeric aggregate formed by a base polymer and a polymeric network formed by a functionalizing polymer;
- and
- wherein the polymeric microparticles and/or nanoparticles are attached to the functionalizing polymer forming the polymeric network of the polymer matrix.
1 more element
A filtration membrane comprising
- a plurality of nanofibers and/or micro fibers each nanofiber comprising polymeric nanoparticles embedded therein, each microfiber comprising polymeric nanoparticles and/or microparticles embedded therein, the polymer nanoparticles and/or microparticles formed by hyperbranched polymeric molecules covalently cross-linked;
- wherein each nanofiber and microfiber of the plurality of nanofibers and/or micro fibers comprises a base polymer and a functionalizing polymer, the functionalizing polymer attaching the polymeric nanoparticles and/or microparticles to form a polymeric network in the nanofibers and/or micro fibers;
- and
- wherein the polymeric nanoparticles and/or microparticles and/or polymeric network present a reactive site on the nanofibers and/or micro fibers to allow selective filtration of a chemical capable of interaction with the reactive site.
1 more element
A process for providing a nanofiber or microfiber comprising
- providing a base polymer substantially soluble in a base polymer solvent;
- providing a particle precursor having a portion substantially soluble in the base polymer solvent and a portion substantially insoluble in the base polymer solvent the polymeric particle precursor able to provide a dispersion of segregated domains in the base polymer solvent
- mixing a base polymer with a polymer particle precursor, and the base polymer solvent to provide a blend,
- mixing the blend with a functionalizing polymer and a crosslinker and/or an initiator capable of reacting with the polymer particle precursor, for a time and under a condition to permit the in situ formation of covalently crosslinked dendritic polymer microparticles and/or nanoparticles and attaching the functionalizing polymer thus providing a dope solution;
- and
- electrospraying and/or electrospinning the liquid mixture to provide a nanofiber or microfiber having embedded therein polymer nanoparticles and/or microparticles formed by dendritic polymeric molecules covalently crosslinked.
3 more elements
Dependencies are inferred from the claim text.