WO2012069099A1 - Support de membrane, son utilisation et procédé de fabrication de membranes polymères appliquées à l'état liquide et comportant un support de ce type - Google Patents

Support de membrane, son utilisation et procédé de fabrication de membranes polymères appliquées à l'état liquide et comportant un support de ce type Download PDF

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Publication number
WO2012069099A1
WO2012069099A1 PCT/EP2011/004461 EP2011004461W WO2012069099A1 WO 2012069099 A1 WO2012069099 A1 WO 2012069099A1 EP 2011004461 W EP2011004461 W EP 2011004461W WO 2012069099 A1 WO2012069099 A1 WO 2012069099A1
Authority
WO
WIPO (PCT)
Prior art keywords
membrane
water
soluble
membrane support
equipment
Prior art date
Application number
PCT/EP2011/004461
Other languages
German (de)
English (en)
Inventor
Armin Greiner
Gunter Scharfenberger
Gabriele Emmerich
Original Assignee
Carl Freudenberg Kg
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
Application filed by Carl Freudenberg Kg filed Critical Carl Freudenberg Kg
Publication of WO2012069099A1 publication Critical patent/WO2012069099A1/fr

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Classifications

    • 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
    • B01D69/10—Supported membranes; Membrane supports
    • 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
    • B01D69/10—Supported membranes; Membrane supports
    • B01D69/105—Support pretreatment
    • 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
    • B01D69/14—Dynamic membranes
    • B01D69/141—Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes
    • B01D69/142—Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes with "carriers"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/46—Impregnation

Definitions

  • Membrane carrier its use and method for producing liquid applied polymer membranes with such
  • the present invention relates to a membrane support of liquid-applied polymer membranes, the use of such a membrane support and a method for producing liquid-applied polymer membranes with such a membrane support.
  • membrane supports are preferably nonwovens and consist of 100% by weight of non-water-soluble fiber polymers, such as, for example, polyolefins, polyamides or of polyesters, as disclosed in DE 10 2005 015 550 B4.
  • Polymer membranes has the task that the membrane support must have an open structure, otherwise no flow is achieved during the filtration process.
  • the structure of the membrane support must be selected to be so dense that the membrane polymer solution applied for membrane production does not pass through the membrane support or at least does not penetrate too deeply into the membrane support.
  • Object of the present invention is therefore to provide an improved
  • membrane support which at least minimizes the disadvantages of known membrane support in membrane production and in particular allows or ensures a particularly good coatability and a particularly good drainage or flow performance. Furthermore, this membrane support for the production of liquid applied polymer membranes, especially in industry in areas of
  • Polymer membranes are given using the membrane support according to the invention.
  • the object is achieved by a membrane support of liquid-applied polymer membranes, which comprises at least one water-soluble polymer as support material.
  • Water-soluble polymers are understood here to mean those polymers which dissolve in a temperature range from 10.degree. C. to 100.degree. C. in any ratio with water without formation of a phase boundary. Furthermore, the Water solubility does not equate to the hydrophilicity. Hydrophilic
  • hydrophilic substances that are not water-soluble, for example hydrogels.
  • the hydrophilicity refers only to the attraction of water and neither the solubility nor the ability to bind water.
  • the membrane carrier or the carrier material of the membrane is designed as a textile, in particular as a nonwoven fabric, woven or knitted fabric, as a film, as a film and / or as a sponge.
  • a water-soluble polymer according to the present invention is preferably a polyvinyl alcohol, partially saponified or hydrolyzed polyvinyl acetate, polyvinylpyrrolidone, water-soluble cellulose derivative, polyethylene glycol, polyacrylate, polyacrylamide, polyvinylamine, polyethyleneimine and / or a
  • Copolymer used from the mentioned.
  • the membrane carrier advantageously has, in particular for reasons of process engineering, equipment with from 0.1% by weight to 70% by weight.
  • water-soluble polymer in particular up to 50 wt .-%, particularly preferably from 0.2 wt .-% to 20 wt .-%, on.
  • the membrane support comprises the at least one water-soluble polymer as an admixture, impregnation and / or
  • Coating in particular in the range between 0.1 g / m 2 and 50 g / m 2 , more preferably between 0.15 g / m 2 and 20 g / m 2 .
  • the water-soluble polymers for example as
  • Fiber polymers inhomogeneous or gradually distributed over the cross section, that is, have a gradual concentration profile over the cross section.
  • the water-soluble polymers may also be located on one of the surfaces.
  • the equipment may be controlled so that the membrane polymer solution will not pass through the wearer or penetrate too deeply and thus will not leak.
  • the membrane polymer solution preferably has three components.
  • a component may include a solvent such as dimethylformamide, N-methyl-2-pyrrolidone or dimethylacetamide.
  • Component preferably comprises a water-soluble polymer of the above-mentioned type.
  • a third component is preferably water-insoluble, such as polyvinylidene fluoride.
  • the membrane support according to the invention is particularly suitable for
  • the membrane support is advantageously designed as a textile, in particular as a nonwoven fabric, woven or knitted fabric, as a film, as a film or as a sponge.
  • Preferred nonwoven membrane carriers can in principle be produced by all conventional nonwoven production processes, such as wet nonwoven, dry nonwoven or spunbonded nonwoven, preferably from staple fibers in the dry laying process.
  • a wet-laying process is conceivable in principle, as long as it can be ensured that the fibers do not dissolve before the membrane is produced.
  • the use of spunbond webs is possible in many areas where previously only wetlaid nonwovens with fiber titers below 1 dtex were used. Spunbonded fabrics are particularly inexpensive, but due to the inhomogeneous fiber distribution are only limited for membrane production.
  • the carding process is typically difficult to control for fibers below 1 dtex and is not commercially viable because carding performance decreases with the fineness of the fibers.
  • fiber titer For wet nonwovens, fiber titer can be used to a minimum of 0.1 dtex.
  • the membrane support according to the invention offer the possibility to dispense with the finest fibers below 1 dtex or to further reduce the air permeability when using the finest fibers.
  • fibers with a titre of 0.5 to 10 dtex are used for the membrane support according to the invention.
  • Membrane carrier at least one water-soluble polymer is added as water-soluble equipment by admixture, impregnation and / or coating.
  • the preferred water-soluble finish of the membrane support preferably takes place by coating, printing, spraying, impregnating or impregnating, laminating, a doctor blade process or a roll process, in particular by means of carding or with a padder
  • the water-soluble polymer during the
  • Membranpolymer solution dissolved or removed from the membrane carrier in the aqueous precipitation bath membrane membrane, and / or after the membrane preparation out. This is done for example by treatment of the membrane with water or with a hypochlorite solution, which can be adjusted in particular by the duration of treatment, the pore size or in particular the porosity of the membrane support can be increased.
  • the equipment comprising water-soluble polymers preferably at least partially comprises the same polymers as the applied membrane polymer solution.
  • Membrane carrier also on.
  • the advantages of the membrane support according to the invention are an adjustable, higher porosity by or after removal of the equipment in comparison to conventional membrane supports.
  • the invention allows the membrane carrier targeted to other needs, such as to align mechanical properties without a passage of the membrane polymer solution or too deep penetration of the
  • Membrane polymer solution must be feared.
  • Trevira 290 with 1.7 dtex from Trevira GmbH for example Trevira 290 with 1.7 dtex from Trevira GmbH
  • polyphenylene sulfide fiber unstretched for example Nexylene® PPS S970 with 5 dtex from Nexis Fibers, Switzerland
  • Polyphenylene sulfide fiber for example Nexylene® PPS S902 with 2 dtex from Nexis Fibers, Switzerland
  • Trevira® T262 2.2 dtex Trevira GmbH for example Trevira® T262 2.2 dtex Trevira GmbH
  • polyamide bicomponent fiber for example Grilon®,
  • Example 2a) to 2d the water-soluble finish of the nonwovens Vinarol DT (trademark of Clariant) was used. This is a partially saponified polyvinyl acetate.
  • a polypropylene spunbonded fabric is used (for example Viledon®
  • a carded dry nonwoven fabric made of polyethylene terephthalate (for example Viledon® Novatexx 2413 N from Freudenberg, 60% Trevira 290 with 1.7 dtex and 40% Tergal T190 at 5.5 dtex) having a basis weight of 100 g / m 2 and one is used Air permeability at 200 Pa differential pressure of 250-350 l / m 2 s.
  • a support or coating between 5 and 6 g / m 2 is realized.
  • This equipment reduces the air permeability to values of 100-150 l / m 2 s.
  • a carded dry nonwoven fabric made of polyethylene terephthalate (for example Viledon® Novatexx 2413 N from Freudenberg, 60% Trevira 290 with 1.7 dtex and 40% Tergal T190 at 5.5 dtex) having a basis weight of 100 g / m 2 and an air permeability is used at 200 Pa differential pressure of 250-350 l / m 2 s.
  • This equipment reduces the air permeability to values of 4-15 l / m 2 s.
  • a wet-laid nonwoven fabric of 100% by weight is used.
  • Bi-component fiber of polypropylene (core) and polyethylene (sheath) for example Viledon® Novatexx 2471 from Freudenberg
  • core polypropylene
  • sheath polyethylene
  • Viledon® Novatexx 2471 from Freudenberg
  • Air permeability can be displayed until complete sealing.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention concerne un support de membrane qui présente une aptitude particulièrement élevée à l'enduction, permet et garantit un drainage et un débit particulièrement élevés, peut être utilisé dans la fabrication de membranes polymères appliquées à l'état liquide, notamment dans l'industrie dans les domaines de la biotechnologie, de l'alimentaire, de la médecine et/ou le traitement des eaux etc., peut être utilisé dans un procédé de fabrication de membranes polymères appliquées à l'état liquide. Selon l'invention, le support de membranes polymères appliquées à l'état liquide comporte comme matériau support au moins un polymère hydrosoluble.
PCT/EP2011/004461 2010-11-26 2011-09-05 Support de membrane, son utilisation et procédé de fabrication de membranes polymères appliquées à l'état liquide et comportant un support de ce type WO2012069099A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010052466.2 2010-11-26
DE102010052466A DE102010052466A1 (de) 2010-11-26 2010-11-26 Membranträger, dessen Verwendung und Verfahren zur Herstellung flüssig applizierter Polymermembranen mit einem derartigen Membranträger

Publications (1)

Publication Number Publication Date
WO2012069099A1 true WO2012069099A1 (fr) 2012-05-31

Family

ID=44883150

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/004461 WO2012069099A1 (fr) 2010-11-26 2011-09-05 Support de membrane, son utilisation et procédé de fabrication de membranes polymères appliquées à l'état liquide et comportant un support de ce type

Country Status (2)

Country Link
DE (1) DE102010052466A1 (fr)
WO (1) WO2012069099A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969452A (en) * 1974-08-08 1976-07-13 The United States Of America As Represented By The Secretary Of The Department Of The Interior Method for casting and handling ultra-thin reverse osmosis membranes
DE2633812A1 (de) * 1975-07-30 1977-02-17 Consiglio Nazionale Ricerche Verfahren zur herstellung von abgestuetzten anisotropen membranen aus synthetischen polyamiden fuer die umgekehrte osmose
EP0003829A1 (fr) * 1978-02-25 1979-09-05 Battelle-Institut e.V. Procédé de fabrication de membranes composites
WO2008118228A2 (fr) * 2006-12-05 2008-10-02 Stonybrook Water Purification Articles comprenant un support fibreux
EP2098281A1 (fr) * 2006-12-28 2009-09-09 Shin-Etsu Polymer Co. Ltd. Matière à perméabilité sélective, procédé de production d'une structure de membrane à perméabilité sélective, structure de membrane à perméabilité sélective et système de climatisation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005015550C5 (de) 2005-04-04 2013-02-07 Carl Freudenberg Kg Verwendung eines thermisch gebundenen Vliesstoffs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969452A (en) * 1974-08-08 1976-07-13 The United States Of America As Represented By The Secretary Of The Department Of The Interior Method for casting and handling ultra-thin reverse osmosis membranes
DE2633812A1 (de) * 1975-07-30 1977-02-17 Consiglio Nazionale Ricerche Verfahren zur herstellung von abgestuetzten anisotropen membranen aus synthetischen polyamiden fuer die umgekehrte osmose
EP0003829A1 (fr) * 1978-02-25 1979-09-05 Battelle-Institut e.V. Procédé de fabrication de membranes composites
WO2008118228A2 (fr) * 2006-12-05 2008-10-02 Stonybrook Water Purification Articles comprenant un support fibreux
EP2098281A1 (fr) * 2006-12-28 2009-09-09 Shin-Etsu Polymer Co. Ltd. Matière à perméabilité sélective, procédé de production d'une structure de membrane à perméabilité sélective, structure de membrane à perméabilité sélective et système de climatisation

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Publication number Publication date
DE102010052466A1 (de) 2012-05-31

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