Mixed matrix membranes with embedded polymeric particles and networks and related compositions, methods, and systems
First Claim
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1. A filtration membrane comprising:
- hyperbranched polymeric molecules covalently cross-linked to form polymeric microparticles and/or nanoparticles embedded in a polymer matrixwherein 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.
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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.
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Citations
24 Claims
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1. A filtration membrane comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. 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. - View Dependent Claims (20, 21, 22)
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23. 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. - View Dependent Claims (24)
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Specification