WO1996035504A1 - Membrane fibre creuse a base de polymere de polysulfone et son procede de production - Google Patents
Membrane fibre creuse a base de polymere de polysulfone et son procede de production Download PDFInfo
- Publication number
- WO1996035504A1 WO1996035504A1 PCT/JP1996/001218 JP9601218W WO9635504A1 WO 1996035504 A1 WO1996035504 A1 WO 1996035504A1 JP 9601218 W JP9601218 W JP 9601218W WO 9635504 A1 WO9635504 A1 WO 9635504A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polysulfone
- hollow fiber
- fiber membrane
- spinning
- based polymer
- Prior art date
Links
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 55
- 239000012528 membrane Substances 0.000 title claims abstract description 50
- 229920002492 poly(sulfone) Polymers 0.000 title claims abstract description 46
- 229920000642 polymer Polymers 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title description 9
- 238000009987 spinning Methods 0.000 claims abstract description 39
- 229920002307 Dextran Polymers 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000035699 permeability Effects 0.000 claims abstract description 7
- 239000003495 polar organic solvent Substances 0.000 claims abstract description 7
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims abstract description 6
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims abstract description 6
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims abstract description 5
- 239000002904 solvent Substances 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 19
- 239000011550 stock solution Substances 0.000 claims description 17
- 238000000926 separation method Methods 0.000 claims description 14
- 238000005345 coagulation Methods 0.000 claims description 9
- 230000015271 coagulation Effects 0.000 claims description 9
- 125000001424 substituent group Chemical group 0.000 claims description 4
- -1 bromine Chemical class 0.000 claims description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052794 bromium Inorganic materials 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 238000004807 desolvation Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 230000001112 coagulating effect Effects 0.000 abstract description 9
- 239000012530 fluid Substances 0.000 abstract description 2
- 239000007864 aqueous solution Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 10
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 9
- 239000010410 layer Substances 0.000 description 8
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 5
- 238000003917 TEM image Methods 0.000 description 5
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 210000003734 kidney Anatomy 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- AVQQQNCBBIEMEU-UHFFFAOYSA-N 1,1,3,3-tetramethylurea Chemical compound CN(C)C(=O)N(C)C AVQQQNCBBIEMEU-UHFFFAOYSA-N 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000502 dialysis Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000005194 fractionation Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- DBGSRZSKGVSXRK-UHFFFAOYSA-N 1-[2-[5-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]acetyl]-3,6-dihydro-2H-pyridine-4-carboxylic acid Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NN=C(O1)CC(=O)N1CCC(=CC1)C(=O)O DBGSRZSKGVSXRK-UHFFFAOYSA-N 0.000 description 1
- FZWBNHMXJMCXLU-UHFFFAOYSA-N 2,3,4,5-tetrahydroxy-6-[3,4,5-trihydroxy-6-[[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]oxan-2-yl]oxyhexanal Chemical compound OC1C(O)C(O)C(CO)OC1OCC1C(O)C(O)C(O)C(OCC(O)C(O)C(O)C(O)C=O)O1 FZWBNHMXJMCXLU-UHFFFAOYSA-N 0.000 description 1
- 102000009027 Albumins Human genes 0.000 description 1
- 108010088751 Albumins Proteins 0.000 description 1
- 206010064553 Dialysis amyloidosis Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- RJGDLRCDCYRQOQ-UHFFFAOYSA-N anthrone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3CC2=C1 RJGDLRCDCYRQOQ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 229940119743 dextran 70 Drugs 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 231100000676 disease causative agent Toxicity 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 125000001117 oleyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs 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
- B01D67/0002—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
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/08—Hollow fibre membranes
-
- 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
- B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
- B01D71/68—Polysulfones; Polyethersulfones
-
- 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
- B01D2325/00—Details relating to properties of membranes
- B01D2325/04—Characteristic thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/20—Specific permeability or cut-off range
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/34—Molecular weight or degree of polymerisation
Definitions
- the present invention relates to a polysulfone-based hollow fiber separation membrane and a method for producing the same. More specifically, the present invention produces a permselective hollow fiber separation membrane made of a polysulfone-based polymer having excellent fluid separation characteristics, excellent strength, and excellent handling properties, and a method for producing such a separation membrane. The present invention relates to a method of manufacturing with good efficiency. Background art
- Polysulfone polymers known as engineering plastics, have excellent mechanical properties, heat resistance, chemical resistance, and microbial resistance. From the separation and purification of colloidal substances and proteins, the management of electrodeposition coating baths, the production of ultrapure water for the electronics industry, the nuclear industry, the desalination of seawater, and the medical device fields such as blood processing using artificial kidneys. It is widely used in various fields.
- polysulfone polymer can be used as a hollow separation membrane for an artificial kidney because spinning into a hollow fiber is easy.
- polysulfone-based polymer hollow fiber membranes are effective in efficiently removing low-molecular-weight protein ⁇ 2- microglobulin, which is considered to be one of the causative agents of dialysis amyloidosis among recent long-term dialysis complications. Are suitable.
- a method for producing such a polysulfone-based polymer hollow fiber separation membrane is disclosed, for example, in Japanese Patent Application Laid-Open No. 54-145379 (US Pat. No. 4,286,015). Nos. 4,351,860), No. 58-156018 (U.S. Pat. No. 4,822,489), No. 59-189903 (U.S. Pat. No. 4,612,119) and No. 61-93801.
- polysulfone resin is used to prepare dimethylacetamide (DMAc), dimethylformamide (DMF), N-methyl-2-pyrrolidone (NMP), dioxane (D0X), tetramethylurea (TMU), etc.
- DMAc dimethylacetamide
- DMF dimethylformamide
- NMP N-methyl-2-pyrrolidone
- D0X dioxane
- TMU tetramethylurea
- a spinning stock solution is prepared by dissolving the solution in an organic solvent, and the stock solution together with the internal coagulating solution is discharged from a double annular nozzle into a water-soluble bath to obtain a hollow fiber-like separation membrane having a fine porous structure. Things. Disclosure of the invention
- the present invention provides a method for producing a hollow fiber membrane having excellent permeability for 2- microglobulin without impairing the characteristics required for a high-performance artificial kidney, that is, a molecular weight cutoff and mechanical strength, and its method. It is an object of the present invention to provide a polysulfone-based polymer hollow fiber membrane having such excellent performance.
- the fiber is spun at the nozzle temperature of 20 to 60 ° C. Therefore, having a sharp molecular weight fractionation characteristics; 8 2 - succeeded in this to obtain a hollow fiber membrane of polysulfone Borima having permeability of the micro-glob Li down, and have completed the present invention.
- the molecular weight cutoff refers to the molecular weight when 50% of a substance having a predetermined molecular weight permeates through a separation membrane when permeated.
- FIG. 1 is a cross-sectional transmission electron micrograph of the polysulfone-based polymer hollow fiber membrane obtained in the example.
- FIG. 2 is a cross-sectional transmission electron micrograph of an example of a conventional polysulfone-based polymer hollow fiber membrane.
- FIG. 3 is a cross-sectional transmission electron micrograph of another example of a conventional polysulfone-based hollow fiber membrane.
- FIG. 4 is a cross-sectional transmission electron micrograph of yet another example of a conventional polysulfone-based polymer hollow fiber membrane.
- Polysulfone polymers used in the present invention preferably, - 0- and single S 0 2 - aromatic polysulfone port Rimmer including binding, as its typical, the following general formula (I) Or those having a repeating unit represented by (II).
- X, ⁇ x 6 are an alkyl group such as methyl group and E Ji group, chlorine, non-dissociable substituent exemplified by a halogen such as bromine, or - C00H , - S0 3 shows a dissociative substituent such as H, and m, n, o, p and q is an integer of 0-4.
- a polysulfone-based polymer in which all of 1, m, n, o, ⁇ and q in formulas (I) and (II) are 0 is easily available and is preferably used in the present invention.
- the polysulfone polymer used in the present invention is not limited to the above.
- an aromatic polysulfone polymer represented by the formula (II) is preferable, and among these, p and q are preferably 0.
- the concentration of the polysulfone-based polymer in the spinning solution is preferably 5 to 30% by weight, particularly preferably 10 to 20% by weight.
- water contained in the spinning dope is an essential component of the present invention, and is preferably contained in the spinning dope containing the polysulfone-based polymer in an amount of 2 to 8% by weight, and more preferably 4 to 6% by weight. To be included Is particularly preferred.
- the amount of water contained in the spinning dope is less than 2% by weight, it is not preferable because not only does the permeability of substances such as 2- microglobulin decrease, but also the mechanical strength of the hollow fiber does not decrease.
- the amount of water exceeds 8% by weight, the solubility of the polysulfone-based polymer in the polar organic solvent is reduced, and the spinning stock solution is apt to gel, resulting in poor handling.
- polar organic solvents useful in the present invention include N-methylpyrrolidone, dimethylsulfoxide, dimethylacetamide, dimethylformamide and the like.
- Polyvinylpyrrolidone contained in the spinning stock solution is added to improve the compatibility of the polysulfone polymer with blood when it comes into contact with blood. It is said that polyvinylpyrrolidone forms a microphase separation structure in the hollow fiber membrane structure, which improves blood compatibility.
- the content is preferably 5 to 20% by weight, particularly preferably 6 to 12% by weight in the spinning dope.
- a method for preparing a spinning dope generally employs a method in which a polymer, a solvent, and additives are measured, stirred and dissolved in a tank, filtered to remove foreign substances, defoamed, and then subjected to spinning.
- This method is labor-intensive because it is a batch method that uses tanks, and is expensive in terms of equipment.
- the properties may change with the lapse of time after dissolution, which is disadvantageous in terms of supplying a uniform dope.
- the temperature of the nozzle when the spinning solution of the polysulfone polymer is discharged from the tube-in-orifice type nozzle is preferably from 20 to 60 ° C, more preferably from 30 to 50 ° C.
- the nozzle temperature is lower than 20 eC , the spinning stock solution tends to gel, and the probability of breakage during spinning increases, which is not preferable.
- the temperature is higher than 60 ° C., the viscosity of the spinning stock solution decreases, stable spinning is difficult, and the thickness unevenness of the hollow fiber after coagulation becomes large.
- the method of supplying the undiluted solution to the spinning nozzle was to use a single pump per nozzle hole to supply a constant amount.
- the number of pumps increased, and equipment space and equipment costs were increased. Increase.
- the discharge hollow fiber is conventionally solidified for each single yarn, and the subsequent steps such as washing and drying are generally handled separately.
- the discharge hollow fiber is discharged in the coagulation liquid. After the yarn has been solidified, it is a preferable method to combine a plurality of single hollow fibers and pass through the subsequent steps, since this greatly improves equipment costs and workability.
- the spinning stock solution prepared as described above is discharged into a coagulation bath by using a tube-in-orifice type nozzle and coagulated.
- a coagulating liquid for the coagulating bath used here that is, the external coagulating liquid, water or an alcohol such as methanol, ethanol, propanol, or butanol, an aqueous solution of these alcohols, or a spinning stock solution is prepared as described above. It is preferable to use an aqueous solution of a polar organic solvent as described above.
- the so-called internal coagulation liquid to be present in the hollow portion of the discharge hollow fiber may be water, alcohol or an aqueous solution thereof as described above, or may have the polarity It is preferably an aqueous solution of an organic solvent.
- Whether the skin layer exhibiting the membrane separation function is formed on the inner surface side or the outer surface side of the hollow fiber can be determined by appropriately selecting the internal coagulation liquid and the coagulation liquid used for the external coagulation bath. You can choose freely.
- the temperature of the coagulating liquid, the when using water or an aqueous solution as the coagulating liquid is usually 30 ⁇ 70'C, preferably 30 to 50 e C.
- the polysulfone-based hollow fiber membrane of the present invention thus obtained has a sponge structure as a whole membrane, and has a dense layer (0.05 to 0.3 ji thickness) on at least one of the inner surface and the outer surface.
- the sponge structure portion has a surface layer portion clearly different in density and pore size from the sponge structure portion, and the material permeability of the hollow fiber membrane is 500 to 800 ml / Hr a wicked person Hg ⁇ m 2, in Chikara' preparative rate of dextran 10, 000 or less 30%, dextran 70, 000 Chikara' bets rate of 80% or more, preferably Chikara' bets dextran 10, 000 Dextran 70,000 has a power rate of 85% or more, has high water permeability, and has a sharp cut property of a medium polymer material.
- the thickness of the dense layer of the polysulfone polymer hollow fiber membrane of the present invention is preferably from 0.07 to 0.2 m, particularly preferably about 0.1 m.
- the thickness of the hollow fiber membrane of the present invention is preferably 20 to 50 ⁇ m, particularly preferably 30 to 40 ⁇ .
- the thickness of the dense layer or the skin layer as described above is directly measured using a transmission electron micrograph of 15,000 times the cross section of the hollow fiber.
- the cut rate was measured by the following method. That is, 1,000 hollow fibers are collected into a bundle of about 20 cm length, the ends of which are bonded with urethane resin and then cut to open the hollow part of the hollow fiber to form a module. You. An aqueous solution (stock solution) of 0.1% by weight of dextran 70,000 (molecular weight 70,000) and dextran 10,000 (molecular weight 10,000) was injected into the hollow fiber hollow side of the module at the inlet flow rate of 200 ml / min. And control the inlet pressure of the dextran aqueous solution so that the permeate volume of the hollow fiber membrane is 10 ml / Hr ⁇ m 2 .
- the temperature of the aqueous solution is 37 ° C ⁇ 1 ° C.
- DMS0 Dimethylsulfoxide described de (DMS0) and as a solvent Jimechiruase Ta Mi de (DMAc), poly Binirupiro Li pyrrolidone (PVP) and as Borima (- 0 - 0 - S0 2 - ⁇ -) ( where, ⁇ 1, 4 one Hue Polyethylene sulfone having a repeating unit represented by diene) and water were dissolved and mixed at a ratio of 41: 30: 9: 15: 5%, respectively, using a twin-screw extruder to obtain a uniform mixture. The solution was filtered and degassed.
- This spinning solution was extruded from a tube-in-orifice-type nozzle (40) for hollow fiber production, and a 60% aqueous solution (40 ° C) of DMS0 and DMAc was used as the internal and external coagulating solutions.
- This spinning stock solution was coagulated from the inner and outer surfaces, and a hollow fiber-like porous membrane was spun.
- the distance from the nozzle to the external coagulation liquid was set to 20 cm.
- the dimensions of the nozzle used were such that the diameter of the center hole (core) was 0.15 mm and the thickness of the surrounding annular part was 0.25 mm.
- the thickness of the surrounding tube section (stock solution discharge hole) was 0.35 mm, and the draft was 3.
- the properties of the obtained hollow fiber were as follows.
- FIG. 1 shows 70% of the size, that is, 10,500 times the size. From FIG. 1, it can be seen that the hollow fiber membrane has a sponge structure as a whole, and a dense skin layer having a thickness of about 0.1 mm is formed on the inner surface thereof.
- a polysulfone polymer hollow fiber membrane used in a commercially available dialyzer (model name: S-1.6 UW) manufactured by Kawasumi Chemical Industry Co., Ltd., a dialyzer manufactured by Asahi Medical Co., Ltd. (model name: APS-
- the cross-section of the polysulfone polymer hollow fiber membrane used in (16) and the polysulfone polymer hollow fiber membrane used in the dialyzer made by Toray Industries, Inc. model name: Tresulfone HF-1.8 was 15,000
- the images were taken with a transmission electron microscope at ⁇ 2 magnification. These are shown in Figures 2, 3 and 4 at 70% of their size (10,500 times).
- ⁇ is the inner surface layer
- B is the hollow part.
- Table 1 shows the conditions, spinning conditions, and properties of the obtained hollow fibers.
- a borosulfone polymer hollow fiber membrane excellent in operability and productivity during spinning of a hollow fiber is obtained, and the obtained hollow fiber membrane has good molecular weight fractionation performance. It is extremely useful as a selective permeation hollow fiber separation membrane.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96913703A EP0824960A4 (en) | 1995-05-09 | 1996-05-08 | HOLLOW FIBER MEMBRANE BASED ON POLYSULFONE POLYMER AND PROCESS FOR PRODUCING THE SAME |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7/110531 | 1995-05-09 | ||
JP11053195 | 1995-05-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996035504A1 true WO1996035504A1 (fr) | 1996-11-14 |
Family
ID=14538175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/001218 WO1996035504A1 (fr) | 1995-05-09 | 1996-05-08 | Membrane fibre creuse a base de polymere de polysulfone et son procede de production |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0824960A4 (ja) |
WO (1) | WO1996035504A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100416135B1 (ko) * | 1997-12-30 | 2004-05-07 | 주식회사 코오롱 | 혈액투석용 폴리설폰 중공사막 및 그의 제조방법. |
JP2009136763A (ja) * | 2007-12-06 | 2009-06-25 | Toyobo Co Ltd | 中空糸型分離膜の製造方法 |
WO2010035793A1 (ja) | 2008-09-26 | 2010-04-01 | 旭化成ケミカルズ株式会社 | 清澄化されたバイオ医薬培養液を製造するための多孔質中空糸膜の使用 |
KR101944923B1 (ko) * | 2017-09-29 | 2019-02-01 | 연세대학교 산학협력단 | 초소수성 전기방사 섬유를 이용한 3차원 매트릭스 및 이의 용도 |
CN114392655A (zh) * | 2021-12-24 | 2022-04-26 | 苏州君康医疗科技有限公司 | 一种血液透析滤过膜的制备方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004008221B4 (de) * | 2004-02-19 | 2006-01-26 | Membrana Gmbh | Dialysemembran mit verbesserter Mittelmolekülentfernung |
ITRM20040193A1 (it) * | 2004-04-19 | 2004-07-19 | Lysitech S R L | Processo per la produzione di membrane polimeriche capillari cave, utili per il trattamento del sangue e dei suoi derivati. |
WO2008046779A1 (en) | 2006-10-18 | 2008-04-24 | Gambro Lundia Ab | Hollow fiber membrane and method for manufacturing thereof |
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JPS62168506A (ja) * | 1986-01-17 | 1987-07-24 | Nitto Electric Ind Co Ltd | 中空糸束の製造方法並びに装置 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100416135B1 (ko) * | 1997-12-30 | 2004-05-07 | 주식회사 코오롱 | 혈액투석용 폴리설폰 중공사막 및 그의 제조방법. |
JP2009136763A (ja) * | 2007-12-06 | 2009-06-25 | Toyobo Co Ltd | 中空糸型分離膜の製造方法 |
WO2010035793A1 (ja) | 2008-09-26 | 2010-04-01 | 旭化成ケミカルズ株式会社 | 清澄化されたバイオ医薬培養液を製造するための多孔質中空糸膜の使用 |
US8758625B2 (en) | 2008-09-26 | 2014-06-24 | Asahi Kasei Chemicals Corporation | Use of porous hollow-fiber membrane for producing clarified biomedical culture medium |
KR101944923B1 (ko) * | 2017-09-29 | 2019-02-01 | 연세대학교 산학협력단 | 초소수성 전기방사 섬유를 이용한 3차원 매트릭스 및 이의 용도 |
CN114392655A (zh) * | 2021-12-24 | 2022-04-26 | 苏州君康医疗科技有限公司 | 一种血液透析滤过膜的制备方法 |
Also Published As
Publication number | Publication date |
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EP0824960A1 (en) | 1998-02-25 |
EP0824960A4 (en) | 1998-11-11 |
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