JP2007100088A - 親水性膜及び方法 - Google Patents
親水性膜及び方法 Download PDFInfo
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- B01D71/06—Organic material
- B01D71/38—Polyalkenylalcohols; Polyalkenylesters; Polyalkenylethers; Polyalkenylaldehydes; Polyalkenylketones; Polyalkenylacetals; Polyalkenylketals
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- B01D71/06—Organic material
- B01D71/38—Polyalkenylalcohols; Polyalkenylesters; Polyalkenylethers; Polyalkenylaldehydes; Polyalkenylketones; Polyalkenylacetals; Polyalkenylketals
- B01D71/381—Polyvinylalcohol
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- B01D71/06—Organic material
- 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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- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
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- H01M8/1027—Polymeric electrolyte materials characterised by the chemical structure of the main chain of the ion-conducting polymer having carbon, oxygen and other atoms, e.g. sulfonated polyethersulfones [S-PES]
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- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
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- H01M8/102—Polymeric electrolyte materials characterised by the chemical structure of the main chain of the ion-conducting polymer
- H01M8/103—Polymeric electrolyte materials characterised by the chemical structure of the main chain of the ion-conducting polymer having nitrogen, e.g. sulfonated polybenzimidazoles [S-PBI], polybenzimidazoles with phosphoric acid, sulfonated polyamides [S-PA] or sulfonated polyphosphazenes [S-PPh]
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- H01—ELECTRIC ELEMENTS
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- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
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- H01M8/1041—Polymer electrolyte composites, mixtures or blends
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- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
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- H01M8/1058—Polymeric electrolyte materials characterised by a porous support having no ion-conducting properties
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- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
- H01M8/1018—Polymeric electrolyte materials
- H01M8/1069—Polymeric electrolyte materials characterised by the manufacturing processes
- H01M8/1081—Polymeric electrolyte materials characterised by the manufacturing processes starting from solutions, dispersions or slurries exclusively of polymers
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
膜の濡れ性、湿/乾サイクル性、極性液体または溶液の濾過性、低PH条件下での流れ及び/または耐久性、室温及び高温条件下での流れ及び/または耐久性、所定波長のエネルギーに対する透明性などに優れたミクロポーラスなベース膜及び該膜の表面に設けられた架橋性コーティングを含む膜を提供すること。
【解決手段】
ミクロポーラスなベース膜に、ポリビニル求核性ポリマーとブロックイソシアナートもしくはウレタン又はブロックイソシアナート及びウレタンの両方を含むコーティングを施す。このコーティングは、ポリビニル求核性ポリマーとウレタン又はブロックイソシアネートとを含み、架橋させることができる。また、かかる膜の形成方法も提供される。
【選択図】 なし
Description
250ミリリットル三角フラスコに、1gのポリビニルアルコール(PVA)(Mw=31000〜50000)、磁気攪拌棒及び49gの水を室温で入れる。懸濁液を約90℃で激しく攪拌することで溶液を得る。PVA−水溶液を室温に冷却する。必要ならば、過剰の水を添加してフラスコ内の総重量を約50gとする。この溶液は、イソプロピルアルコール(IPA)/水で予め湿らせたePTFE膜の処理に使用できる。なお、溶液にIPAを添加すれば、予め湿らせた膜の必要性を低減又は排除し得る。添加し得るIPAの量は、使用するPVAの加水分解度に比例する。
8枚の未処理の延伸ポリテトラフルオロエチレン(ePTFE)膜をIPA/水で予め湿らせ、次いで実施例1からの溶液及びブロックト1,6−ジイソシアナトヘキサンの溶液で処理する。被覆済みの膜を加熱してイソシアネートのブロックを解除し、PVA及び架橋剤を架橋させる。架橋は処理膜上に機械的かみ合いの網目構造を形成する。
15の250ミリリットル三角フラスコの各々に、1gずつのポリビニルアルコール(PVA)、磁気攪拌棒及び49gの室温水を入れる。これらのフラスコを試料1〜15として識別する。約90℃で攪拌した後、各試料中のPVAは水に溶解する。溶液を冷却し、総重量が50gになるように調整し、次いで激しく攪拌しながらIPA(水の重量に対して約70〜200wt%)及び対応する量のウレタン(IV)(表参照)を添加する。
各溶液を、予め湿らせることなしに対応する番号のミクロポーラスePTFE膜に適用する(全部で15の被覆膜試料を得る)。15の未処理膜に溶液を吹付け、次いで膜細孔への完全な液体浸透を助けるため同じ溶液中に浸漬する。各膜を、架橋剤によるPVAの架橋を開始させるための温度(十分な温度は約110℃である)に約2時間加熱する。硬化温度は膜を乾燥させる。
実施例4−各種コーティング溶液の調製及び試験
以下の述べる点を除き、実施例3に記載の通り15の新しい膜を製造して試験した。湿/乾サイクル中及び流量試験中の水温は沸騰温度(即ち、100℃)である。実施例4の膜には個別の試料番号が付けられていない。結果を表3に示す。
再濡れ性及び流量の試験後、15の膜を10サイクルにわたり約1のpHから約14のpHまでのpHサイクル試験に供する。pHサイクル試験後に追加の湿/乾サイクルに付した後にも、流量の目立った低下は存在しない。
ポリアクリルアミドのホフマン分解でポリビニルアミンを得ることによって、ポリビニルアミンポリマーを製造する。
250ミリリットル三角フラスコに、1gのポリビニルアミン(Mw=30000〜50000)、磁気攪拌棒及び49gの水を室温で入れる。懸濁液を約90℃で激しく攪拌することで溶液を得る。必要ならば、過剰の水を添加してフラスコ内の総重量を約50gとする。ポリビニルアミン−水溶液を室温に冷却する。この溶液は、イソプロピルアルコール(IPA)/水で予め湿らせたePTFE膜の処理に使用できる。溶液にIPAを添加すれば、予め湿らせた膜の必要性を低減又は排除し得ることに注意されたい。
8枚の未処理の延伸ポリテトラフルオロエチレン(ePTFE)膜をIPA/水で予め湿らせ、次いで実施例6からの溶液及びブロックト1,6−ジイソシアネート架橋剤を含む溶液で処理する。被覆済みの膜を加熱してイソシアネートのブロックを解除し、ポリビニルアミンを架橋剤で架橋させて処理膜上に機械的かみ合いの網目構造を形成する。
15の250ミリリットル三角フラスコの各々に、1gずつのポリビニルアミン、磁気攪拌棒及び49gの室温水を入れる。これらのフラスコを試料16〜30として識別する。(必要ならば)約90℃で攪拌した後、各試料中のポリビニルアミンは水に溶解する。溶液を冷却し、総重量が50gになるように調整し、次いで激しく攪拌しながらIPA(水の重量に対して約70〜200wt%)及び対応する量のウレタン(IV)(表参照)を添加する。
各溶液を対応する番号のミクロポーラスePTFE膜に適用する(全部で15の被覆膜試料を得る)。15の未処理膜に溶液を吹付け、次いで膜細孔への完全な液体浸透を助けるため同じ溶液中に浸漬する。各膜を、架橋剤によるポリビニルアミンの架橋を開始させるための温度(十分な温度は約110℃である)に約2時間加熱する。硬化温度は膜を乾燥させる。
実施例9−各種コーティング溶液の調製及び試験
以下の述べる点を除き、実施例8に記載の通り15の新しい膜を製造して試験した。湿/乾サイクル中及び流量試験中の水温は沸騰温度(即ち、100℃)である。実施例9の膜は個別の試料番号で区別されていない。結果を表6に示す。
再濡れ性及び流量の試験後、15の膜を10サイクルにわたり約3のpHから約12のpHまでのpHサイクル試験に供する。pHサイクル試験後に追加の湿/乾サイクルに付した後でも、流量の目立った低下は存在しない。
Claims (11)
- ミクロポーラスなベース膜、及び
上記膜の表面に設けられた架橋性コーティング
を含んでなる膜であって、上記コーティングがポリビニル求核性ポリマーとブロックイソシアネートもしくはウレタン又はブロックイソシアネート及びウレタンの両方とを含む膜。 - 前記ポリビニル求核性ポリマーがポリビニルアルコール又はポリビニルアミンの一方或いは両方からなる、請求項1記載の膜。
- 前記ポリビニルアミンが200000未満の平均分子量を有する、請求項2記載の膜。
- 前記ポリビニルアルコールが2500を超える平均分子量を有する、請求項2記載の膜。
- 前記架橋性コーティングがさらに、ブロック剤と、トルエンジイソシアネート、ジフェニルメタンジイソシアネート、ヘキサメチレンジイソシアネート、メチレンビス(4−シクロヘキシルイソシアネート)、ナフタレンジイソシアネート、メチルイソシアネート又はポリメチレンポリフェニルイソシアネートの1種以上とを含む、請求項1記載の膜。
- 請求項1記載の膜から形成される処理膜であって、膜を乾燥出荷状態から濡らすことができるようにコーティングを架橋させた処理膜。
- 当該処理膜が室温で10回の湿/乾サイクル後に水銀柱27インチの差圧で1mL/min−cm2を超える水流量を有する、請求項8記載の処理膜。
- 当該処理膜が100℃で10回の湿/乾サイクル後に水銀柱27インチの差圧で1mL/min−cm2を超える水流量を有する、請求項8記載の処理膜。
- 多孔性ベース膜の表面にコーティングを施工することを含んでなる膜の形成方法であって、上記コーティングがポリビニル求核性ポリマーとブロックイソシアネート又はウレタンとを含む方法。
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Application Number | Priority Date | Filing Date | Title |
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US11/241,227 | 2005-09-30 | ||
US11/241,227 US7381331B2 (en) | 2005-09-30 | 2005-09-30 | Hydrophilic membrane and associated method |
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JP2007100088A true JP2007100088A (ja) | 2007-04-19 |
JP5221020B2 JP5221020B2 (ja) | 2013-06-26 |
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US (1) | US7381331B2 (ja) |
EP (1) | EP1769841B1 (ja) |
JP (1) | JP5221020B2 (ja) |
CN (1) | CN1939957A (ja) |
CA (1) | CA2560582A1 (ja) |
ES (1) | ES2377335T3 (ja) |
TW (1) | TWI414547B (ja) |
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JP2010247524A (ja) * | 2009-04-14 | 2010-11-04 | General Electric Co <Ge> | 物品、積層体及び関連方法 |
JP2011011194A (ja) * | 2009-07-06 | 2011-01-20 | Fujifilm Corp | 結晶性ポリマー微孔性膜及びその製造方法、並びに濾過用フィルタ |
JP2011110553A (ja) * | 2009-11-24 | 2011-06-09 | Internatl Business Mach Corp <Ibm> | 性能強化層を有する複合膜 |
WO2012124745A1 (ja) | 2011-03-14 | 2012-09-20 | 日本ゴア株式会社 | 水処理フィルター用濾材およびその製造方法 |
JP2015213882A (ja) * | 2014-05-12 | 2015-12-03 | 第一工業製薬株式会社 | 水処理濾材用コーティング剤 |
KR20160100056A (ko) * | 2015-02-13 | 2016-08-23 | 주식회사 엘지화학 | 수처리 분리막 및 이의 제조방법 |
KR20160123900A (ko) * | 2015-04-17 | 2016-10-26 | 주식회사 엘지화학 | 수처리 분리막의 제조방법 |
KR20160123904A (ko) * | 2015-04-17 | 2016-10-26 | 주식회사 엘지화학 | 수처리 분리막 및 이의 제조방법 |
KR20210101797A (ko) * | 2020-02-11 | 2021-08-19 | 거림테크 주식회사 | 고분자 이온교환막 연료전지의 이온교환막 제조 장치 및 방법 |
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Also Published As
Publication number | Publication date |
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EP1769841A1 (en) | 2007-04-04 |
CN1939957A (zh) | 2007-04-04 |
ES2377335T3 (es) | 2012-03-26 |
JP5221020B2 (ja) | 2013-06-26 |
TWI414547B (zh) | 2013-11-11 |
TW200728365A (en) | 2007-08-01 |
US7381331B2 (en) | 2008-06-03 |
EP1769841B1 (en) | 2011-12-14 |
CA2560582A1 (en) | 2007-03-30 |
US20070075013A1 (en) | 2007-04-05 |
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