JP2011168741A5 - - Google Patents
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- JP2011168741A5 JP2011168741A5 JP2010035907A JP2010035907A JP2011168741A5 JP 2011168741 A5 JP2011168741 A5 JP 2011168741A5 JP 2010035907 A JP2010035907 A JP 2010035907A JP 2010035907 A JP2010035907 A JP 2010035907A JP 2011168741 A5 JP2011168741 A5 JP 2011168741A5
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- flat membrane
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- polyvinylidene fluoride
- weight
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Description
実施例
ポリフッ化ビニリデン樹脂(シグマアルドリッチ社製品；Mw275,000)30重量％とアセチルクエン酸トリブチル70重量％とを、ニーダを用いて170℃の温度で溶融混合した後、冷却した。冷却固化した混合物を、170℃に加熱したSUS鋼板を用いて、スペース厚みが0.5mmとなるように熱プレスした後、20℃の水冷却浴中で固化させることにより、フィルム状成形体を得た。得られた成形体をエタノール中に浸漬させ、アセチルクエン酸トリブチルを抽出、除去した後乾燥することにより、平膜状ポリフッ化ビニリデン多孔質膜を得た。
EXAMPLE 30% by weight of polyvinylidene fluoride resin (manufactured by Sigma-Aldrich Co .; Mw 275,000) and 70% by weight of tributyl acetyl citrate were melt mixed at a temperature of 170 ° C. using a kneader and then cooled. After heat-pressing the cooled and solidified mixture using a SUS steel plate heated to 170 ° C. so that the space thickness is 0.5 mm, the film-shaped molded body is obtained by solidifying it in a water cooling bath at 20 ° C. The The obtained molded body was immersed in ethanol, extracted and removed from tributyl acetyl citrate, and then dried to obtain a flat polyvinylidene fluoride porous membrane.
さらに、この多孔質平膜について、次の各項目の測定を行った。
最大孔径：ASTM F316-86に基づき、バブルポイント法により測定
液体としてエタノールを使用し、25℃におけるバブルポイントを、次式
から算出した
最大孔径(μm)＝(2860×T)／P
T：表面張力(単位：mN/m)
P：最初に気泡が検知される空気圧力(単位：Pa)
空孔率：平膜の面積および厚みを測定し、ポリフッ化ビニリデンの比重1.78を用い
て、次式から算出した
空孔率(％)＝(1−W／V／1.78)×100
W：平膜の重量(単位：g)
V：見掛け体積(単位：cm3)
透水量：平膜を直径25mmの円形状に打ち抜き、これをロ過ホルダー(アドバンテッ
ク社製攪拌型ウルトラホルダーUHP-25K；有効ロ過面積3.5cm2)にセットし
、25℃、0.1MPaの引加圧条件下で透水試験を行った
Furthermore, the following items were measured for this porous flat membrane.
Maximum pore size: Measured by bubble point method based on ASTM F316-86
Using ethanol as the liquid, the bubble point at 25 ° C is
Calculated from
Maximum pore size (μm) = (2860 × T) / P
T: Surface tension (unit: mN / m)
P: Air pressure at which air bubbles are first detected (unit: Pa)
Porosity: The area and thickness of a flat membrane are measured, and the specific gravity of polyvinylidene fluoride is 1.78.
Calculated from the following equation
Porosity (%) = (1-W / V / 1.78) × 100
W: Weight of flat membrane (unit: g)
V: Apparent volume (unit: cm 3 )
Permeability: A flat membrane is punched into a circular shape with a diameter of 25 mm, and this is used as a filter holder (advance
Click manufactured agitation type ultra holder UHP-25K; Set Enable B to the over area 3.5 cm 2)
Permeability test was conducted at a pressure of 25 ° C and 0.1 MPa .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010035907A JP5531667B2 (en) | 2010-02-22 | 2010-02-22 | Manufacturing method of polyvinylidene fluoride porous membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010035907A JP5531667B2 (en) | 2010-02-22 | 2010-02-22 | Manufacturing method of polyvinylidene fluoride porous membrane |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2011168741A JP2011168741A (en) | 2011-09-01 |
| JP2011168741A5 true JP2011168741A5 (en) | 2012-08-30 |
| JP5531667B2 JP5531667B2 (en) | 2014-06-25 |
Family
ID=44683188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010035907A Expired - Fee Related JP5531667B2 (en) | 2010-02-22 | 2010-02-22 | Manufacturing method of polyvinylidene fluoride porous membrane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5531667B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6791945B2 (en) * | 2016-03-09 | 2020-11-25 | 旭化成株式会社 | Porous hollow fiber membrane, its manufacturing method, and filtration method |
| JP7244426B2 (en) | 2017-09-01 | 2023-03-22 | 旭化成株式会社 | Porous hollow fiber membrane, method for producing porous hollow fiber membrane, and filtration method |
| US11534723B2 (en) | 2017-09-07 | 2022-12-27 | Asahi Kasei Kabushiki Kaisha | Method of filtration using porous membranes |
| EP3680319B1 (en) * | 2017-09-07 | 2024-01-24 | Asahi Kasei Kabushiki Kaisha | Method for manufacturing brewed alcoholic beverage using porous membrane |
| JP7169129B2 (en) * | 2017-09-07 | 2022-11-10 | 旭化成株式会社 | Method for producing saccharified liquid using porous membrane |
| JP6839765B2 (en) | 2017-09-07 | 2021-03-10 | 旭化成株式会社 | Filtration method using a porous membrane |
| CN108057346B (en) * | 2017-12-08 | 2020-12-25 | 南京工业大学 | High-flux polymer separation membrane, preparation method, diluent composition and application |
| US20220001335A1 (en) * | 2018-11-15 | 2022-01-06 | Asahi Kasei Kabushiki Kaisha | Method of filtration using porous membranes |
| CN109529636A (en) * | 2018-12-12 | 2019-03-29 | 合肥信达膜科技有限公司 | A kind of polyvinylidene fluoride film and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPS046602A0 (en) * | 2002-02-12 | 2002-03-07 | U.S. Filter Wastewater Group, Inc. | Halar membranes |
| JP2006218441A (en) * | 2005-02-14 | 2006-08-24 | Nitto Denko Corp | Porous membrane and its production method |
-
2010
- 2010-02-22 JP JP2010035907A patent/JP5531667B2/en not_active Expired - Fee Related
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