JPS54147215A - Hollow regenerated cellulose fibers and their production - Google Patents
Hollow regenerated cellulose fibers and their productionInfo
- Publication number
- JPS54147215A JPS54147215A JP5385178A JP5385178A JPS54147215A JP S54147215 A JPS54147215 A JP S54147215A JP 5385178 A JP5385178 A JP 5385178A JP 5385178 A JP5385178 A JP 5385178A JP S54147215 A JPS54147215 A JP S54147215A
- Authority
- JP
- Japan
- Prior art keywords
- viscose
- orifice
- regenerated cellulose
- cellulose fibers
- extruded
- 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.)
- Pending
Links
- 229920003043 Cellulose fiber Polymers 0.000 title abstract 2
- 239000004627 regenerated cellulose Substances 0.000 title abstract 2
- 229920000297 Rayon Polymers 0.000 abstract 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 239000011162 core material Substances 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- HIQIXEFWDLTDED-UHFFFAOYSA-N 4-hydroxy-1-piperidin-4-ylpyrrolidin-2-one Chemical compound O=C1CC(O)CN1C1CCNCC1 HIQIXEFWDLTDED-UHFFFAOYSA-N 0.000 abstract 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 235000019270 ammonium chloride Nutrition 0.000 abstract 1
- 230000001112 coagulating effect Effects 0.000 abstract 1
- 238000005345 coagulation Methods 0.000 abstract 1
- 230000015271 coagulation Effects 0.000 abstract 1
- 238000000502 dialysis Methods 0.000 abstract 1
- 239000012510 hollow fiber Substances 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 230000008929 regeneration Effects 0.000 abstract 1
- 238000011069 regeneration method Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract 1
- 235000011152 sodium sulphate Nutrition 0.000 abstract 1
- 238000000108 ultra-filtration Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- 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
- B01D71/08—Polysaccharides
- B01D71/10—Cellulose; Modified cellulose
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Artificial Filaments (AREA)
Abstract
PURPOSE: To produce the title hollow fibers usable for dialysis and ultrafiltration, having improved membrane separation characteristics, inner shapes, and mechanical properties, by extruding viscose through an annular orifice of a double-pipe nozzle with a liquid core material through an inner orifice.
CONSTITUTION: Viscose having a viscosity of 40W1,000 poises and an ammonium chloride value of 7W20 is extruded through an annular orifice; a liquid, e.g. isopropyl myristate, having poor compatibility with the viscose and coagulating properties as a core material, through the inner orifice. The extruded viscose is coagulated in a coagulation bath comprising 30W50 g/l of sulfuric acid and 20W 250 g/l of sodium sulfate at 20W70°C, and passed through an acid regeneration bath at 40W75°C to give hollow regenerated cellulose fibers having an inside diameter of 30W800μ, a wall thickness of 5W30μ, smooth inner walls, a water permeability of 0.1×10-3W10.0×10-3 g/cm2. atm. min, and a tensile strength ≥ 0.5 g/d.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5385178A JPS54147215A (en) | 1978-05-02 | 1978-05-02 | Hollow regenerated cellulose fibers and their production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5385178A JPS54147215A (en) | 1978-05-02 | 1978-05-02 | Hollow regenerated cellulose fibers and their production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54147215A true JPS54147215A (en) | 1979-11-17 |
Family
ID=12954264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5385178A Pending JPS54147215A (en) | 1978-05-02 | 1978-05-02 | Hollow regenerated cellulose fibers and their production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54147215A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6097005A (en) * | 1984-04-16 | 1985-05-30 | Terumo Corp | Plasticization of hollow fiber for dialysis |
| CN100335689C (en) * | 2005-12-29 | 2007-09-05 | 山东海龙股份有限公司 | Method for producing viscose fiber by using zinc-free coagulating bath |
-
1978
- 1978-05-02 JP JP5385178A patent/JPS54147215A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6097005A (en) * | 1984-04-16 | 1985-05-30 | Terumo Corp | Plasticization of hollow fiber for dialysis |
| CN100335689C (en) * | 2005-12-29 | 2007-09-05 | 山东海龙股份有限公司 | Method for producing viscose fiber by using zinc-free coagulating bath |
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