JP2002177748A - Method for treating porous organic hollow fiber membrane - Google Patents

Method for treating porous organic hollow fiber membrane

Info

Publication number
JP2002177748A
JP2002177748A JP2000373682A JP2000373682A JP2002177748A JP 2002177748 A JP2002177748 A JP 2002177748A JP 2000373682 A JP2000373682 A JP 2000373682A JP 2000373682 A JP2000373682 A JP 2000373682A JP 2002177748 A JP2002177748 A JP 2002177748A
Authority
JP
Japan
Prior art keywords
hollow fiber
fiber membrane
porous organic
organic hollow
drying
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
Application number
JP2000373682A
Other languages
Japanese (ja)
Inventor
Hideki Tashiro
秀樹 田代
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.)
Nok Corp
Original Assignee
Nok Corp
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 Nok Corp filed Critical Nok Corp
Priority to JP2000373682A priority Critical patent/JP2002177748A/en
Publication of JP2002177748A publication Critical patent/JP2002177748A/en
Pending legal-status Critical Current

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  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method for treating a porous organic hollow fiber membrane by which the drying of the treated membrane can be carried out in a comparatively short time and the elongation of the membrane after dried can be enhanced. SOLUTION: The porous organic hollow fiber membrane is immersed in alcohol solution of glycerin and dried.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、多孔質有機中空糸
膜の処理方法に関する。更に詳しくは、乾燥後の伸度を
高め得る多孔質有機中空糸膜の処理方法に関する。
[0001] The present invention relates to a method for treating a porous organic hollow fiber membrane. More specifically, the present invention relates to a method for treating a porous organic hollow fiber membrane capable of increasing elongation after drying.

【0002】[0002]

【従来の技術】多孔質有機中空糸膜を60℃以上のグリセ
リン中で熱処理することにより、それの機械的強度を向
上させることが提案されているが(特開昭61-9861号公
報)、このような処理方法では膜に付着したグリセリン
の保水力の影響で、乾燥に長時間を要するという欠点が
みられる。また、グリセリンを水溶液として用いた場合
には、グリセリン水溶液を膜内部に完全に浸透させるの
に長時間を要するという問題もみられる。
2. Description of the Related Art It has been proposed to improve the mechanical strength of a porous organic hollow fiber membrane by heat-treating it in glycerin at 60 ° C. or higher (Japanese Patent Laid-Open No. 61-9861). Such a treatment method has a drawback that it takes a long time for drying due to the effect of the water retention capacity of glycerin attached to the membrane. In addition, when glycerin is used as an aqueous solution, there is also a problem that it takes a long time to completely penetrate the glycerin aqueous solution into the inside of the membrane.

【0003】[0003]

【発明が解決しようとする課題】本発明の目的は、乾燥
が比較的短時間で行われ、乾燥後の伸度を高め得る多孔
質有機中空糸膜の処理方法を提供することにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide a method for treating a porous organic hollow fiber membrane in which drying is performed in a relatively short time and elongation after drying can be increased.

【0004】[0004]

【課題を解決するための手段】かかる本発明の目的を達
成させる多孔質有機中空糸膜の処理方法は、多孔質有機
中空糸膜をグリセリンのアルコール溶液中に浸せきし、
乾燥させることによって行われる。
In order to achieve the object of the present invention, a method for treating a porous organic hollow fiber membrane comprises immersing the porous organic hollow fiber membrane in an alcohol solution of glycerin,
It is performed by drying.

【0005】[0005]

【発明の実施の形態】多孔質有機中空糸膜としては、ポ
リスルホン系、ポリアミド系、セルロース系等の有機物
質から湿式紡糸あるいは乾湿式紡糸したものが用いられ
る。これらの中空糸膜は、紡糸直後の湿潤状態あるいは
乾燥状態で用いることができる。乾燥状態で用いる場合
には、例えば一定長さに切断された中空糸膜を束ねた状
態で処理に付することができる。中空糸膜群を束ねるの
は、その両端部を輪ゴムや粘着テープで結束したり、そ
の端面を熱板、熱線等で溶着したり、あるいは中空糸膜
群全体を紙、不織布等でラッピングするなどの方法によ
って行われる。
BEST MODE FOR CARRYING OUT THE INVENTION As a porous organic hollow fiber membrane, a material obtained by wet-spinning or dry-wet spinning from an organic substance such as polysulfone, polyamide or cellulose is used. These hollow fiber membranes can be used in a wet state or a dry state immediately after spinning. When used in a dry state, for example, hollow fiber membranes cut to a certain length can be subjected to treatment in a bundled state. To bundle the hollow fiber membrane group, bind both ends with rubber bands or adhesive tape, weld the end surface with a hot plate, a hot wire, etc., or wrap the entire hollow fiber membrane group with paper, nonwoven fabric, etc. It is performed by the method described above.

【0006】その処理に用いられるグリセリンのアルコ
ール溶液は、その濃度が3〜10重量%、好ましくは3〜5重
量%でなければならない。これ以下の濃度のものでは所
望の処理効果が得られず、一方これ以上の濃度のものを
使用すると中空糸膜間に固着などが発生するようにな
る。
The alcohol solution of glycerin used in the treatment must have a concentration of 3 to 10% by weight, preferably 3 to 5% by weight. If the concentration is lower than this, the desired treatment effect cannot be obtained, while if the concentration is higher than this, sticking or the like occurs between the hollow fiber membranes.

【0007】グリセリンのアルコール溶液による浸せき
処理は、好ましいアルコールとして用いられるエタノー
ルの沸点以下の温度、一般には室温条件下で約5〜60秒
間程度行われ、その後約30〜60℃での乾燥が行われる。
乾燥に要する時間は、約0.5〜3時間程度で十分である。
The immersion treatment with an alcohol solution of glycerin is carried out at a temperature lower than the boiling point of ethanol used as a preferred alcohol, generally at room temperature for about 5 to 60 seconds, followed by drying at about 30 to 60 ° C. Is
About 0.5 to 3 hours is sufficient for the time required for drying.

【0008】[0008]

【発明の効果】本発明方法では、伸度を向上させるため
の浸せき処理後の乾燥時間が大幅に短縮され、しかも伸
度を著しく向上させることができる。また、アルコール
により粘度を低下させたグリセリンの中空糸膜に対する
濡れ性や浸透性の向上も図られ、伸度の向上に寄与す
る。
According to the method of the present invention, the drying time after the immersion treatment for improving the elongation can be greatly reduced, and the elongation can be significantly improved. In addition, the wettability and permeability of glycerin, whose viscosity has been reduced by alcohol, to the hollow fiber membrane are also improved, which contributes to the improvement of elongation.

【0009】[0009]

【実施例】次に、実施例について本発明を説明する。Next, the present invention will be described by way of examples.

【0010】実施例 乾湿式紡糸法で製造された多孔質ポリスルホン中空糸膜
(外径300μm、内径200μm)を長さ30cmに切断したもの10
000本を束ね、5重量%グリセリンエタノール溶液中に10
秒間浸せきした後50℃の乾燥器中で乾燥させると、2時
間で乾燥が完了し、中空糸膜間に固着はみられなかっ
た。
EXAMPLE A porous polysulfone hollow fiber membrane produced by a dry-wet spinning method
(Outer diameter 300 μm, inner diameter 200 μm) cut to a length of 30 cm 10
000 pieces, 10% in 5% by weight glycerin ethanol solution
After immersion for 2 seconds and drying in a drier at 50 ° C., drying was completed in 2 hours and no sticking was observed between the hollow fiber membranes.

【0011】このような浸せき-乾燥させた中空糸膜1本
について、初期長さ50mm、引張速度10mm/分で引張切断
した時点での伸度を測定すると60%であった。
With respect to one hollow fiber membrane thus dipped and dried, the elongation at the time of tensile cutting at an initial length of 50 mm and a tensile speed of 10 mm / min was 60%.

【0012】比較例1 実施例において、浸せき処理を行わないと、中空糸膜間
に若干の固着がみられ、また中空糸膜の伸度は23%であ
った。
COMPARATIVE EXAMPLE 1 In the example, when the immersion treatment was not performed, some fixation was observed between the hollow fiber membranes, and the elongation of the hollow fiber membrane was 23%.

【0013】比較例2 実施例において、5重量%グリセリン水溶液中に10秒間浸
せきし、その後50℃で乾燥させると、乾燥には15時間を
要した。中空糸膜間に固着はみられなかったが、中空糸
膜の伸度は30%であった。
Comparative Example 2 In the example, when immersion was performed for 10 seconds in a 5% by weight glycerin aqueous solution and then drying was performed at 50 ° C., drying required 15 hours. No fixation was observed between the hollow fiber membranes, but the elongation of the hollow fiber membrane was 30%.

【0014】比較例3 実施例において、エタノール中に10秒間浸せきし、その
後50℃で乾燥させると、乾燥は2時間で行われ、中空糸
膜間に固着はみられなかったが、中空糸膜の伸度は24%
であった。
Comparative Example 3 In the example, when immersed in ethanol for 10 seconds and then dried at 50 ° C., the drying was performed in 2 hours and no sticking was observed between the hollow fiber membranes. 24% elongation
Met.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 多孔質有機中空糸膜をグリセリンのアル
コール溶液中に浸せきし、乾燥させることを特徴とする
多孔質有機中空糸膜の処理方法。
1. A method for treating a porous organic hollow fiber membrane, comprising immersing the porous organic hollow fiber membrane in an alcohol solution of glycerin and drying.
【請求項2】 3〜10重量%のグリセリンのアルコール溶
液が用いられる請求項1記載の多孔質有機中空糸膜の処
理方法。
2. The method for treating a porous organic hollow fiber membrane according to claim 1, wherein an alcohol solution of glycerin of 3 to 10% by weight is used.
【請求項3】 多孔質有機中空糸膜が束として浸せき処
理され、乾燥させる請求項1記載の多孔質有機中空糸膜
の処理方法。
3. The method for treating a porous organic hollow fiber membrane according to claim 1, wherein the porous organic hollow fiber membrane is immersed as a bundle and dried.
JP2000373682A 2000-12-08 2000-12-08 Method for treating porous organic hollow fiber membrane Pending JP2002177748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000373682A JP2002177748A (en) 2000-12-08 2000-12-08 Method for treating porous organic hollow fiber membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000373682A JP2002177748A (en) 2000-12-08 2000-12-08 Method for treating porous organic hollow fiber membrane

Publications (1)

Publication Number Publication Date
JP2002177748A true JP2002177748A (en) 2002-06-25

Family

ID=18843006

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000373682A Pending JP2002177748A (en) 2000-12-08 2000-12-08 Method for treating porous organic hollow fiber membrane

Country Status (1)

Country Link
JP (1) JP2002177748A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006223975A (en) * 2005-02-17 2006-08-31 Daicen Membrane Systems Ltd Hollow fiber membrane module
WO2013146742A1 (en) * 2012-03-26 2013-10-03 三菱レイヨン株式会社 Porous film preservation solution

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5724606A (en) * 1980-06-12 1982-02-09 Akzo Nv Dialytic film consisting of regenerated cellulose in form of plane film. tubular film or hollow fiber and its manufacture
JPS61146306A (en) * 1984-12-20 1986-07-04 Terumo Corp Preparation of hollow yarn for dialysis
JPH06509746A (en) * 1991-08-17 1994-11-02 アクゾ エヌ ヴエー Hollow fiber for dialysis
JPH07189015A (en) * 1993-06-21 1995-07-25 Teijin Ltd Hollow fiber for hemodialysis and its production
JP2000296318A (en) * 1999-04-12 2000-10-24 Asahi Medical Co Ltd Polysulfone-base blood treatment module
JP2002126473A (en) * 2000-10-19 2002-05-08 Nikkiso Co Ltd Method for producing hollow fiber membrane

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5724606A (en) * 1980-06-12 1982-02-09 Akzo Nv Dialytic film consisting of regenerated cellulose in form of plane film. tubular film or hollow fiber and its manufacture
JPS61146306A (en) * 1984-12-20 1986-07-04 Terumo Corp Preparation of hollow yarn for dialysis
JPH06509746A (en) * 1991-08-17 1994-11-02 アクゾ エヌ ヴエー Hollow fiber for dialysis
JPH07189015A (en) * 1993-06-21 1995-07-25 Teijin Ltd Hollow fiber for hemodialysis and its production
JP2000296318A (en) * 1999-04-12 2000-10-24 Asahi Medical Co Ltd Polysulfone-base blood treatment module
JP2002126473A (en) * 2000-10-19 2002-05-08 Nikkiso Co Ltd Method for producing hollow fiber membrane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006223975A (en) * 2005-02-17 2006-08-31 Daicen Membrane Systems Ltd Hollow fiber membrane module
WO2013146742A1 (en) * 2012-03-26 2013-10-03 三菱レイヨン株式会社 Porous film preservation solution
JPWO2013146742A1 (en) * 2012-03-26 2015-12-14 三菱レイヨン株式会社 Stock solution for porous membrane

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