GB2600370A - Water wettable filtration membranes and their manufacture - Google Patents

Water wettable filtration membranes and their manufacture Download PDF

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Publication number
GB2600370A
GB2600370A GB2203121.5A GB202203121A GB2600370A GB 2600370 A GB2600370 A GB 2600370A GB 202203121 A GB202203121 A GB 202203121A GB 2600370 A GB2600370 A GB 2600370A
Authority
GB
United Kingdom
Prior art keywords
membrane
sheet
photoinitiator
water
crosslinking agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB2203121.5A
Other versions
GB202203121D0 (en
GB2600370B (en
Inventor
Wheelwright Walt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hydroxsys Holdings Ltd
Original Assignee
Hydroxsys Holdings Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2019902876A external-priority patent/AU2019902876A0/en
Application filed by Hydroxsys Holdings Ltd filed Critical Hydroxsys Holdings Ltd
Publication of GB202203121D0 publication Critical patent/GB202203121D0/en
Publication of GB2600370A publication Critical patent/GB2600370A/en
Application granted granted Critical
Publication of GB2600370B publication Critical patent/GB2600370B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0093—Chemical modification
    • B01D67/00933—Chemical modification by addition of a layer chemically bonded to the membrane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0006—Organic membrane manufacture by chemical reactions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0093—Chemical modification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0093—Chemical modification
    • B01D67/00931—Chemical modification by introduction of specific groups after membrane formation, e.g. by grafting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/1214—Chemically bonded layers, e.g. cross-linking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/26—Polyalkenes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/26—Polyalkenes
    • B01D71/261—Polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/26—Polyalkenes
    • B01D71/262—Polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/76—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
    • B01D71/78—Graft polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/76—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
    • B01D71/80—Block polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/12—Chemical modification
    • C08J7/16—Chemical modification with polymerisable compounds
    • C08J7/18—Chemical modification with polymerisable compounds using wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/30—Cross-linking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/34—Use of radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/38—Graft polymerization
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/38—Graft polymerization
    • B01D2323/385—Graft polymerization involving radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/30—Chemical resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/145—Ultrafiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/10—Spiral-wound membrane modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/76—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
    • B01D71/82—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74 characterised by the presence of specified groups, e.g. introduced by chemical after-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Transplantation (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)

Abstract

Filtration membranes prepared by adhering a poloxamer to a preformed sheet of microporous polyolefin are described. In an embodiment, the poloxamer is that supplied under the trade name PLURONIC™ P-123 and the sheet is microporous poly(ethylene). The membranes provide the advantage of being tolerant to the cleaning agents used in clean-in-place protocols.

Claims (20)

1) A water-wettable filtration membrane consisting of a microporous sheet of grafted polyolefin where the graft comprises a poloxamer of the structure HO(ethylene oxide)m-(propylene oxide)n-(ethylene oxide)mH where m is in the range 15 to 25 and n is in the range 50 to 90.
2) The membrane of claim 1 where the polyolefin is poly(ethylene).
3) The membrane of claim 1 or 2 where m is 20 and n is 70.
4) The membrane of any one of claims 1 to 3 where the graft comprises a crosslinking agent.
5) The membrane of claim 4 where the crosslinking agent has a molecular weight below 150 g mol-1.
6) The membrane of claim 5 where the crosslinking agent is divinylbenzene.
7) A filter assembly comprising the membrane of any one of claims 1 to 7.
8) The filter element of claim 7 where the membrane is spiral wound.
9) A method of preparing a water-wettable filtration membrane comprising; (a) Contacting a microporous sheet of polyolefin with a solution of a poloxamer in a solvent to provide a contacted sheet; (b) Irradiating the contacted sheet with ultraviolet light in the presence of a photoinitiator to provide an irradiated sheet; and (c) Drying and washing the irradiated sheet to provide the membrane, where the poloxamer is a polymer of the structure HO(ethylene oxide)m-(propylene oxide)n-(ethylene oxide)mH where m is in the range 15 to 25 and n is in the range 50 to 90.
10) The method of claim 9 where the polyolefin is poly(ethylene).
11) The method of claim 9 or 10 where m is 20 and n is 70.
12) The method of any one of claims 9 to 11 where the solution comprises the photoinitiator.
13) The method of any one of claims 9 to 12 where the photoinitiator is a Type II photoinitiator.
14) The method of any one of claims 9 to 13 where the photoinitiator is benzophenone.
15) The method of any one of claims 9 to 14 where the solution comprises a low molecular weight crosslinking agent.
16) The method of claim 15 where the crosslinking agent is divinylbenzene.
17) The method of any one of claims 9 to 16 where the solvent is 30 to 50 % (v/v) alcohol or acetone in water.
18) The method of any one of claims 7 to 14 where the solvent is 30 to 50 % (v/v) ethanol in water.
19) A method of recovering or removing water from a feed stream comprising the step of contacting a first side of a membrane of any one of claims 1 or 8 with the feed stream at a pressure sufficient to provide a permeate.
20) The method of claim 19 where the pressure is less than 10 bar and the flux is greater than 500 LMH.
GB2203121.5A 2019-08-09 2020-08-10 Water wettable filtration membranes and their manufacture Active GB2600370B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2019902876A AU2019902876A0 (en) 2019-08-09 Membranes and their manufacture
PCT/IB2020/057503 WO2021028813A1 (en) 2019-08-09 2020-08-10 Water wettable filtration membranes and their manufacture

Publications (3)

Publication Number Publication Date
GB202203121D0 GB202203121D0 (en) 2022-04-20
GB2600370A true GB2600370A (en) 2022-04-27
GB2600370B GB2600370B (en) 2023-07-19

Family

ID=74570942

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2203121.5A Active GB2600370B (en) 2019-08-09 2020-08-10 Water wettable filtration membranes and their manufacture

Country Status (7)

Country Link
EP (1) EP4010108A4 (en)
JP (1) JP2022543874A (en)
CN (1) CN115003406A (en)
AU (1) AU2020330484A1 (en)
GB (1) GB2600370B (en)
IL (1) IL290423A (en)
WO (1) WO2021028813A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2603726B (en) * 2019-10-02 2024-05-08 Hydroxsys Holdings Ltd Durable membranes, their preparation and use

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110120939A1 (en) * 2009-11-25 2011-05-26 Kenichi Ishizuka Crystalline polymer microporous membrane, method for producing the same, and filtration filter
US8062881B2 (en) * 1996-10-24 2011-11-22 Corning Incorporated Method for making a polymer blend for reducing protein binding to surfaces
US20140332468A1 (en) * 2011-09-21 2014-11-13 Aquaporin A/S Aquaporin based thin film composite membranes
US20190070330A1 (en) * 2017-09-01 2019-03-07 Ppg Industries Ohio, Inc. Treated Membrane for Fragrance Delivery

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE446505B (en) * 1982-11-16 1986-09-22 Gambro Dialysatoren MEMBRANE AND WAY TO MAKE THIS
DE10159191B4 (en) * 2001-11-29 2006-05-11 Leibniz-Institut Für Polymerforschung Dresden E.V. Modified hollow fiber membrane materials and methods for their modification
US20030148017A1 (en) * 2001-12-07 2003-08-07 Olli Tuominen Copolymer coating for a hydrophobic membrane
US20080312349A1 (en) * 2007-02-22 2008-12-18 General Electric Company Method of making and using membrane
WO2011035195A1 (en) * 2009-09-18 2011-03-24 Nano Terra Inc. Functional nanofibers and methods of making and using the same
CN102179192A (en) * 2011-03-16 2011-09-14 天津大学 Pollution-resistant membrane for filling fluorine-containing amphiphilic surface-modification material and preparation method thereof
EP3008118B1 (en) * 2013-06-12 2020-01-22 Kimberly-Clark Worldwide, Inc. Polyolefin film for use in packaging
GB2603726B (en) * 2019-10-02 2024-05-08 Hydroxsys Holdings Ltd Durable membranes, their preparation and use

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8062881B2 (en) * 1996-10-24 2011-11-22 Corning Incorporated Method for making a polymer blend for reducing protein binding to surfaces
US20110120939A1 (en) * 2009-11-25 2011-05-26 Kenichi Ishizuka Crystalline polymer microporous membrane, method for producing the same, and filtration filter
US20140332468A1 (en) * 2011-09-21 2014-11-13 Aquaporin A/S Aquaporin based thin film composite membranes
US20190070330A1 (en) * 2017-09-01 2019-03-07 Ppg Industries Ohio, Inc. Treated Membrane for Fragrance Delivery

Also Published As

Publication number Publication date
GB202203121D0 (en) 2022-04-20
CN115003406A (en) 2022-09-02
WO2021028813A1 (en) 2021-02-18
EP4010108A1 (en) 2022-06-15
GB2600370B (en) 2023-07-19
JP2022543874A (en) 2022-10-14
IL290423A (en) 2022-04-01
AU2020330484A1 (en) 2022-04-07
EP4010108A4 (en) 2023-08-09

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