Amphiphilic block copolymer; composition, membrane, and separation module thereof; and methods of making same
First Claim
1. An amphiphilic block copolymer, comprisinga hydrophobic block comprising a poly(phenylene ether) block or a poly(phenylene ether) copolymer block having repeat units of the structure:
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Abstract
An amphiphilic block copolymer comprises a poly(phenylene ether) block or a poly(phenylene ether) copolymer block and a hydrophilic block or graft. A method of making the amphiphilic block copolymer comprises polymerization of a hydrophilic ethylenically unsaturated monomer in the presence of poly(phenylene ether) or a poly(phenylene ether) copolymer to make the amphiphilic block copolymer. A porous asymmetric membrane comprises a poly(phenylene ether) or poly(phenylene ether) copolymer, and the amphiphilic block copolymer comprising a poly(phenylene ether) block or a poly(phenylene ether) copolymer block, and a hydrophilic block or graft. The porous asymmetric membrane is made by phase-inversion of a dope solution of the poly(phenylene ether) or poly(phenylene ether) copolymer and the amphiphilic block copolymer in a coagulation bath.
68 Citations
21 Claims
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1. An amphiphilic block copolymer, comprising
a hydrophobic block comprising a poly(phenylene ether) block or a poly(phenylene ether) copolymer block having repeat units of the structure:
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12. A porous asymmetric membrane comprising:
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a hydrophobic polymer comprising a poly(phenylene ether) or poly(phenylene ether) copolymer; and an amphiphilic block copolymer comprising an amphiphilic block copolymer comprising a hydrophobic block comprising a poly(phenylene ether) or poly(phenylene ether) copolymer having repeat units of the structure; - View Dependent Claims (15, 16, 17, 18, 20)
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14. A method of forming a porous asymmetric membrane, the method comprising:
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dissolving a hydrophobic polymer comprising a poly(phenylene ether) or poly(phenylene ether) copolymer and wherein each occurrence of Z1 is independently halogen, unsubstituted or substituted C1-12 hydrocarbyl provided that the hydrocarbyl group is not tertiary hydrocarbyl, C1-12 hydrocarbylthio, C1-12 hydrocarbyloxy, or C2-12 halohydrocarbyloxy wherein at least two carbon atoms separate the halogen and oxygen atoms; and
each occurrence of Z2 is independently hydrogen, halogen, unsubstituted or substituted C1-12 hydrocarbyl provided that the hydrocarbyl group is not tertiary hydrocarbyl, C1-12 hydrocarbylthio, C1-12 hydrocarbyloxy, or C2-12 halohydrocarbyloxy wherein at least two carbon atoms separate the halogen and oxygen atoms. - View Dependent Claims (21)
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Specification