JP7383851B2 - 中空糸膜の製造方法 - Google Patents
中空糸膜の製造方法 Download PDFInfo
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- 239000012528 membrane Substances 0.000 title claims description 116
- 239000012510 hollow fiber Substances 0.000 title claims description 102
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 132
- 238000010438 heat treatment Methods 0.000 claims description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 238000009987 spinning Methods 0.000 claims description 24
- 229920002492 poly(sulfone) Polymers 0.000 claims description 23
- 239000011347 resin Substances 0.000 claims description 23
- 229920005989 resin Polymers 0.000 claims description 23
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 14
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 8
- 238000001891 gel spinning Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 description 20
- 239000003960 organic solvent Substances 0.000 description 17
- 238000011156 evaluation Methods 0.000 description 15
- 230000035699 permeability Effects 0.000 description 8
- 239000011550 stock solution Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000010828 elution Methods 0.000 description 7
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- 239000000126 substance Substances 0.000 description 5
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- 230000015271 coagulation Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 239000004695 Polyether sulfone Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 238000000578 dry spinning Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229920001477 hydrophilic polymer Polymers 0.000 description 2
- 229920006393 polyether sulfone Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000002145 thermally induced phase separation Methods 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- 229920000491 Polyphenylsulfone Polymers 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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- 230000001419 dependent effect Effects 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 229920000110 poly(aryl ether sulfone) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
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- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/76—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from other polycondensation products
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- B01D71/44—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B01D71/26-B01D71/42
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- D04H1/43914—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres hollow fibres
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- D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Description
ポリスルホン(「Ultrason(登録商標)S3010」、BASF社製)19質量%、ポリビニルピロリドン(「PVP K-30」、BASF社製)9質量%およびDMF72質量%を含む紡糸原液を室温にて調製した。
GC-MS(島津製作所社製)を用いて、中空糸膜中に残存するDMFを測定した。中空糸膜中のDMF濃度が10ppm以下であれば、作業環境測定基準における管理濃度を満たすため、安全性の高い中空糸膜が得られていると評価した。
乾熱処理において、加熱時間を72時間とした以外は、実施例1と同様にして中空糸膜を作製して、上記の測定および評価を行った。その結果を図1に示す。なお、DMF測定の結果が2回とも同じであったため、図1において対応するプロットも重複している。
乾熱処理において、加熱時間を96時間とした以外は、実施例1と同様にして中空糸膜を作製して、上記の測定および評価を行った。その結果を図1に示す。
乾熱処理において、加熱時間を168時間とした以外は、実施例1と同様にして中空糸膜を作製して、上記の測定および評価を行った。その結果を図1に示す。
乾熱処理において、加熱温度を100℃とした以外は、実施例1と同様にして中空糸膜を作製して、上記の測定および評価を行った。その結果を図1に示す。
乾熱処理において、加熱時間を72時間とした以外は、実施例5と同様にして中空糸膜を作製して、上記の測定および評価を行った。その結果を図1に示す。
乾熱処理において、加熱時間を96時間とした以外は、実施例5と同様にして中空糸膜を作製して、上記の測定および評価を行った。その結果を図1に示す。
乾熱処理において、加熱時間を120時間とした以外は、実施例5と同様にして中空糸膜を作製して、上記の測定および評価を行った。その結果を図1に示す。
乾熱処理において、加熱温度を70℃とし、かつ加熱時間を24時間とした以外は、実施例1と同様にして中空糸膜を作製して、上記の測定および評価を行った。その結果を図1に示す。
乾熱処理において、加熱温度を70℃とし、かつ加熱時間を48時間とした以外は、実施例1と同様にして中空糸膜を作製して、上記の測定および評価を行った。その結果を図1に示す。
乾熱処理において、加熱温度を70℃とし、かつ加熱時間を72時間とした以外は、実施例1と同様にして中空糸膜を作製して、上記の測定および評価を行った。その結果を図1に示す。
乾熱処理において、加熱温度を70℃とし、かつ加熱時間を96時間とした以外は、実施例1と同様にして中空糸膜を作製して、上記の測定および評価を行った。その結果を図1に示す。
乾熱処理において、加熱温度を70℃とし、かつ加熱時間を120時間とした以外は、実施例1と同様にして中空糸膜を作製して、上記の測定および評価を行った。その結果を図1に示す。
乾熱処理において、加熱温度を70℃とし、かつ加熱時間を168時間とした以外は、実施例1と同様にして中空糸膜を作製して、上記の測定および評価を行った。その結果を図1に示す。
乾熱処理を行わず、紡糸後の中空糸膜に対して上記の測定および評価を行った。その結果を図1に示す。なお、便宜上、図1では各加熱温度(70℃、80℃、100℃)が0時間である場合におけるDMF濃度を示す。
乾熱処理において、加熱温度を100℃とし、かつ加熱時間を24時間とした以外は、実施例1と同様にして中空糸膜を作製して、上記の測定および評価を行った。その結果を図1に示す。
Claims (6)
- 10質量%以上40質量%以下のポリスルホン系樹脂、1質量%以上30質量%以下のポリビニルピロリドン、および1質量%以上80質量%以下のN,N-ジメチルホルムアミドを含有する紡糸原液を、芯液と共に二重環ノズルより吐出し、乾湿式紡糸により中空糸膜を作製した後、前記中空糸膜を80℃以上100℃以下の温度で48時間以上168時間以下乾熱処理することを特徴とする中空糸膜の製造方法。
- 前記芯液が、30質量%以上100質量%以下のN,N-ジメチルホルムアミドを含有する、請求項1に記載の中空糸膜の製造方法。
- 前記ポリスルホン系樹脂が、ポリスルホン樹脂である請求項1または2に記載の中空糸膜の製造方法。
- 前記乾熱処理後に中空糸膜中に残存するN,N-ジメチルホルムアミドの濃度が、10ppm以下である請求項1または2に記載の中空糸膜の製造方法。
- 前記乾熱処理後に水中に浸漬した中空糸膜から溶出されるN,N-ジメチルホルムアミドの濃度が、90ppb以下である請求項1または2に記載の中空糸膜の製造方法。
- 前記乾熱処理前に、紡糸した中空糸膜を温水で洗浄する請求項1または2に記載の中空糸膜の製造方法。
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JP2021064677 | 2021-04-06 | ||
JP2021064677 | 2021-04-06 | ||
PCT/JP2022/017059 WO2022215685A1 (ja) | 2021-04-06 | 2022-04-04 | 中空糸膜の製造方法 |
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US (1) | US20240157307A1 (ja) |
EP (1) | EP4321241A1 (ja) |
JP (1) | JP7383851B2 (ja) |
CN (1) | CN117042870A (ja) |
WO (1) | WO2022215685A1 (ja) |
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WO2020004212A1 (ja) | 2018-06-26 | 2020-01-02 | Nok株式会社 | 加湿用多孔質中空糸膜の製造法 |
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JP4029312B2 (ja) * | 2000-08-07 | 2008-01-09 | 東洋紡績株式会社 | 選択透過性中空糸膜 |
JP3431622B1 (ja) * | 2002-09-12 | 2003-07-28 | 旭メディカル株式会社 | 高性能血漿浄化膜 |
JP2009226397A (ja) * | 2008-02-27 | 2009-10-08 | Toray Ind Inc | 加湿用中空糸膜および加湿用膜モジュール |
CN101711954A (zh) * | 2009-11-06 | 2010-05-26 | 江苏朗生生命科技有限公司 | 共混改性聚砜空心纤维膜及其制备方法和应用 |
JP2013144264A (ja) | 2012-01-13 | 2013-07-25 | Nok Corp | ポリスルホン系多孔質膜の製造方法 |
JP6201553B2 (ja) | 2012-09-11 | 2017-09-27 | 東レ株式会社 | 多孔質膜、多孔質膜を内蔵する浄水器および多孔質膜の製造方法 |
JP2017051880A (ja) | 2015-09-07 | 2017-03-16 | Nok株式会社 | 非溶剤誘起相分離法用製膜原液およびこれを用いた多孔質中空糸膜の製造方法 |
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