Chlorine resistant desalination membranes based on directly sulfonated poly(Arylene Ether Sulfone) copolymers
AssigneeVirginia Tech Intellectual Properties, Inc.
InventorsJames E. McGrath, Ho Bum Park, Benny D. Freeman
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Abstract
The present invention provides a membrane, kit, and method of making a hydrophilic-hydrophobic random copolymer membrane. The hydrophilic-hydrophobic random copolymer membrane includes a hydrophilic-hydrophobic random copolymer. The hydrophilic-hydrophobic random copolymer includes one or more hydrophilic monomers having a sulfonated polyarylsulfone monomer and a second monomer and one or more hydrophobic monomers having a non-sulfonated third monomer and a fourth monomer. The sulfonated polyarylsulfone monomer introduces a sulfonate into the hydrophilic-hydrophobic random copolymer prior to polymerization.
Claims37
A method of making a hydrophilic-hydrophobic random copolymer membrane comprising the steps of:
- forming a hydrophilic-hydrophobic random copolymer comprising one or more hydrophilic monomers comprising a sulfonated polyarylsulfone monomer and a second monomer and one or more hydrophobic monomers comprising a non-sulfonated third monomer and a fourth monomer, wherein the sulfonated polyarylsulfone monomer introduce a sulfonate into the hydrophilic-hydrophobic random copolymer.
A hydrophilic-hydrophobic random copolymer membrane comprising:
- one or more hydrophilic regions comprising a sulfonated polyarylsulfone monomer and a second monomer;
- and
- one or more hydrophobic regions comprising a non-sulfonated third monomer and a fourth monomer, wherein the sulfonated polyarylsulfone monomer introduce a sulfonate into the hydrophilic-hydrophobic random copolymer.
A method of making a chlorine tolerant hydrophilic-hydrophobic copolymer desalination membrane comprising the steps of:
- forming a hydrophilic-hydrophobic random copolymer comprising one or more hydrophilic monomers comprising a sulfonated polyarylsulfone monomer and a second monomer and one or more hydrophobic monomers comprising a non-sulfonated third monomer and a fourth monomer, wherein the sulfonated polyarylsulfone monomer introduce the sulfonate into the hydrophilic-hydrophobic random copolymer;
- and
- forming the hydrophilic-hydrophobic random copolymer into a hydrophilic-hydrophobic copolymer desalination membrane that is chlorine tolerant membrane.
A water purification kit comprising:
- a chlorine tolerant hydrophilic-hydrophobic copolymer desalination membrane comprising one or more hydrophilic regions comprising a sulfonated polyarylsulfone monomer and a second monomer and one or more hydrophobic regions comprising a non-sulfonated third monomer and a fourth monomer, wherein the sulfonated polyarylsulfone monomer introduce a sulfonate into the hydrophilic-hydrophobic random copolymer;
- and
- a set of instructions.
A chlorine tolerant hydrophilic-hydrophobic multi-block copolymer desalination membrane comprising:
- a hydrophilic random oligomer comprising a sulfonated polyarylsulfone monomer and a second monomer;
- and
- a hydrophobic random oligomer comprising a non-sulfonated third monomer and a monomer, wherein a hydrophilic-hydrophobic multi-block copolymer desalination membrane that is chlorine tolerant and includes one or more blocks of the hydrophilic random copolymer and one or more blocks of the hydrophobic random copolymer.
A hydrophilic-hydrophobic random copolymer desalination membrane comprising one or more units having the structure:
- wherein X, Y, Z and R independently comprise an O, a S, a C, a F, C(CH3)2 group, a CF3 group, a C(CF3) group, a C(CF3)2 group, a C(CF3)(C6H5) group, a C(O) group, a COO group, a S(O)2 group, or a P(O)(C6H5) group, or a carbon-carbon single bond and A=1−B.
A chlorine tolerant hydrophilic-hydrophobic copolymer desalination membrane containing units of the following formula:
Dependencies are inferred from the claim text.