JPS54131666A - Manufacturing of acrylonitrile polymer semipermeable membrane - Google Patents
Manufacturing of acrylonitrile polymer semipermeable membraneInfo
- Publication number
- JPS54131666A JPS54131666A JP3933478A JP3933478A JPS54131666A JP S54131666 A JPS54131666 A JP S54131666A JP 3933478 A JP3933478 A JP 3933478A JP 3933478 A JP3933478 A JP 3933478A JP S54131666 A JPS54131666 A JP S54131666A
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- acrylonitrile polymer
- formamide
- dope
- manufacturing
- 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
Links
- 239000012528 membrane Substances 0.000 title abstract 4
- 229920002239 polyacrylonitrile Polymers 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 abstract 6
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 abstract 4
- 239000002904 solvent Substances 0.000 abstract 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical group C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 abstract 1
- 238000001879 gelation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000012046 mixed solvent Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE: To manufacture the title membrane having asymmetric porous structure and excellent separation characteristics and mechanical strength, by forming a film from a dope of an acrylonitrile polymer in dimethyl formamide containing formamide at specific temperature, and removing the solvent from the film.
CONSTITUTION: 10W35 wt% of an acrylonitrile polymer containing ≥80 wt% of acrylonitrile unit and having an intrinsic viscosity of 0.4W4, is dissolved in a mixed solvent of formamide and dimethylformamide (1/99W28/72). The dope is formed to the membrane having desired shape at a temperature higher than the gelation temperature by 1W50°. The membrane is passed through an inert atmosphere immediately after the forming, and subjected to the solvent removal process.
EFFECT: Highly asymmetric structure. Adjustable rate of permeation and salt-removing efficiency.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3933478A JPS54131666A (en) | 1978-04-03 | 1978-04-03 | Manufacturing of acrylonitrile polymer semipermeable membrane |
| FR7908258A FR2421656A1 (en) | 1978-04-03 | 1979-04-02 | PROCESS FOR THE PRODUCTION OF ACRYLONITRILIC SEPARATION MEMBRANES |
| US06/195,058 US4409162A (en) | 1978-04-03 | 1980-10-07 | Process for producing acrylonitrile separation membranes in fibrous form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3933478A JPS54131666A (en) | 1978-04-03 | 1978-04-03 | Manufacturing of acrylonitrile polymer semipermeable membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54131666A true JPS54131666A (en) | 1979-10-12 |
| JPS562093B2 JPS562093B2 (en) | 1981-01-17 |
Family
ID=12550187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3933478A Granted JPS54131666A (en) | 1978-04-03 | 1978-04-03 | Manufacturing of acrylonitrile polymer semipermeable membrane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54131666A (en) |
-
1978
- 1978-04-03 JP JP3933478A patent/JPS54131666A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS562093B2 (en) | 1981-01-17 |
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