CA2138681A1 - Polyvinylidene fluoride membrane - Google Patents

Polyvinylidene fluoride membrane

Info

Publication number
CA2138681A1
CA2138681A1 CA002138681A CA2138681A CA2138681A1 CA 2138681 A1 CA2138681 A1 CA 2138681A1 CA 002138681 A CA002138681 A CA 002138681A CA 2138681 A CA2138681 A CA 2138681A CA 2138681 A1 CA2138681 A1 CA 2138681A1
Authority
CA
Canada
Prior art keywords
membrane
polyvinylidene fluoride
casting solution
present
porous
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
CA002138681A
Other languages
French (fr)
Other versions
CA2138681C (en
Inventor
Peter John Degen
Ioannis P. Sipsas
Gregory C. Rapisarda
Joseph Gregg
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.)
Pall Corp
Original Assignee
Individual
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 US08/327,622 external-priority patent/US5736051A/en
Application filed by Individual filed Critical Individual
Publication of CA2138681A1 publication Critical patent/CA2138681A1/en
Application granted granted Critical
Publication of CA2138681C publication Critical patent/CA2138681C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B01D67/00931—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
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0095—Drying
    • 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
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0011—Casting solutions therefor
    • 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
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • 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
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/34—Polyvinylidene fluoride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/12—Specific ratios of components used
    • 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
    • B01D2323/38—Graft polymerization
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/18—Membrane materials having mixed charged functional groups

Abstract

The present invention provides an isotropic, skinless, porous, polyvinylidene fluoride membrane having a K UF of at least about 15 psi (103 kPa), and preferably below about 50 psi (345 kPa), when tested using liquid pairs having an interfacial tension of about 4 dynes/cm (4 mN/m). The present inventive membrane preferably has a titer reduction of at least about 10 8 against T1 bacteriophage, more preferably also against PR772 coliphage, and even more preferably also against PP7 bacteriophage. The present inventive membrane can have a thickness of about 20 mil (500 µm) or less and even as low as about 5 mil (125 µm) or less. The present invention also provides a method of preparing such a membrane by providing a casting solution comprising polyvinylidene fluoride and a solvent therefor, heating the casting solution to a uniform temperature of about 57 °C to about 60 °C, spreading the casting solution onto a substrate to form a film, quenching the film in a quench bath so as to form a porous membrane, and washing and drying the porous membrane.
CA002138681A 1993-12-22 1994-12-21 Polyvinylidene fluoride membrane Expired - Lifetime CA2138681C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US17375593A 1993-12-22 1993-12-22
US08/173,755 1993-12-22
US08/327,622 US5736051A (en) 1993-12-22 1994-10-24 Polyvinylidene fluoride membrane and method for removing viruses from solutions
US08/327,622 1994-10-24

Publications (2)

Publication Number Publication Date
CA2138681A1 true CA2138681A1 (en) 1995-06-23
CA2138681C CA2138681C (en) 2001-08-14

Family

ID=26869498

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002138681A Expired - Lifetime CA2138681C (en) 1993-12-22 1994-12-21 Polyvinylidene fluoride membrane

Country Status (11)

Country Link
JP (2) JP3178772B2 (en)
CA (1) CA2138681C (en)
CH (1) CH688612A5 (en)
DE (1) DE4445973B4 (en)
DK (1) DK144294A (en)
ES (1) ES2109146B1 (en)
FR (1) FR2713951B1 (en)
GB (1) GB2285010B (en)
IT (1) IT1267191B1 (en)
NL (1) NL9402134A (en)
SE (1) SE510792C2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1063256A4 (en) * 1998-03-16 2003-03-26 Asahi Chemical Ind Microporous film
TW581709B (en) 1999-10-22 2004-04-01 Asahi Kasei Corp Heat-resistant microporous film
ES2374913T3 (en) 2001-08-01 2012-02-23 Asahi Kasei Medical Co., Ltd. MULTI-PAPER MICROPOROUS PULP.
AU2003301399B2 (en) 2002-10-18 2006-07-06 Asahi Kasei Medical Co., Ltd. Microporous hydrophilic membrane
WO2007078880A1 (en) * 2005-12-30 2007-07-12 3M Innovative Properties Company Method of making functionalized substrates
ITMI20060601A1 (en) 2006-03-30 2007-09-30 Gvs Spa PROCEDURE FOR THE PREPARATION OF MICROPOROSE MEMBRANES IN POLYVINYL DENFLUORIDE PVDF
JP5026888B2 (en) * 2007-08-14 2012-09-19 日東電工株式会社 Fluororesin molded body having hydrophilic polymer on surface and method for producing the same
EP2332639A1 (en) 2008-09-19 2011-06-15 Toray Industries, Inc. Separation membrane, and method for producing same
FR3089226B1 (en) * 2018-11-30 2021-08-06 Arkema France Process for preparing porous fluoropolymer films
CN114028956B (en) * 2021-11-18 2023-05-26 浙江机电职业技术学院 Reverse osmosis membrane and preparation method and application thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2600265B1 (en) * 1986-06-20 1991-09-06 Rhone Poulenc Rech DRY AND HYDROPHILIC SEMI-PERMEABLE MEMBRANES BASED ON VINYLIDENE POLYFLUORIDE
US5019260A (en) * 1986-12-23 1991-05-28 Pall Corporation Filtration media with low protein adsorbability
JP2898665B2 (en) * 1989-09-28 1999-06-02 テルモ株式会社 Plasma separation membrane and plasma separator using the same
US5079272A (en) * 1989-11-30 1992-01-07 Millipore Corporation Porous membrane formed from interpenetrating polymer network having hydrophilic surface
US5198505A (en) * 1991-04-11 1993-03-30 Pall Corporation Uniform polyvinylidene difluoride membranes
WO1993022034A1 (en) * 1992-05-06 1993-11-11 Costar Corporation Polyvinylidene fluoride microporous membrane and method

Also Published As

Publication number Publication date
FR2713951B1 (en) 1996-12-06
ES2109146B1 (en) 1998-08-16
CA2138681C (en) 2001-08-14
ES2109146A1 (en) 1998-01-01
GB2285010A (en) 1995-06-28
IT1267191B1 (en) 1997-01-28
SE9404249L (en) 1995-06-23
JP2001187325A (en) 2001-07-10
DK144294A (en) 1995-06-23
CH688612A5 (en) 1997-12-15
GB9424308D0 (en) 1995-01-18
DE4445973A1 (en) 1995-06-29
JPH07265674A (en) 1995-10-17
DE4445973B4 (en) 2006-06-29
ITTO940998A0 (en) 1994-12-07
SE9404249D0 (en) 1994-12-07
FR2713951A1 (en) 1995-06-23
ITTO940998A1 (en) 1996-06-07
JP3178772B2 (en) 2001-06-25
SE510792C2 (en) 1999-06-21
JP3443735B2 (en) 2003-09-08
NL9402134A (en) 1995-07-17
GB2285010B (en) 1997-11-19

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20141222