JP2019530668A - 酸化グラフェン抗微生物要素 - Google Patents
酸化グラフェン抗微生物要素 Download PDFInfo
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- JP2019530668A JP2019530668A JP2019513036A JP2019513036A JP2019530668A JP 2019530668 A JP2019530668 A JP 2019530668A JP 2019513036 A JP2019513036 A JP 2019513036A JP 2019513036 A JP2019513036 A JP 2019513036A JP 2019530668 A JP2019530668 A JP 2019530668A
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Abstract
Description
一部の実施形態では、抗微生物膜が記載される。一部の実施形態では、膜は、複合材塗膜を含むことができる。一部の実施形態では、膜は、支持体と、該支持体材料上の複合材塗膜とを含むことができる。一部の実施形態では、抗微生物膜は、選択透過性であってもよい。他の実施形態では、膜は、選択透過性でない。さらに他の実施形態では、膜は、透過性でない。一部の実施形態では、膜は、高い水蒸気透過性を有することができる。一部の実施形態では、膜は、低い水蒸気透過性を有することもある。一部の実施形態では、支持体は、多孔質であってもよい。他の実施形態では、支持体は、無孔質であることができる。
一部の実施形態では、図4に示されているような、表面での微生物増殖を防止するための方法が記載され得る。一部の実施形態では、この方法は、上記の抗微生物膜のいずれかを用意するステップを含むことができる。一部の実施形態では、上記の膜のいずれかを用意するステップは、保護すべき表面に前記膜のいずれかを被覆することを含むことができる。一部の実施形態では、膜は、複合材塗膜を含むことができる。一部の実施形態では、膜は、支持体と、該支持体材料上の複合材塗膜とを含むことができる。一部の実施形態では、複合材塗膜は、酸化グラフェンおよび架橋剤を含有することができる。一部の実施形態では、架橋剤は、ポリビニルアルコールであることができる。一部の実施形態では、酸化グラフェンの架橋剤に対する質量比は、1:1000〜10:1であり得る。一部の実施形態では、グラフェン材料の架橋剤に対する質量比は、約1:100〜約5:1、または約3:100の範囲であり得る。一部の実施形態では、支持体は、多孔質であることができる。他の実施形態では、支持体は、無孔質であることができる。一部の実施形態では、支持体は、塗膜の一部であることができる。他の実施形態では、支持体は、塗膜とは別個のものであることができる。支持体が塗膜とは別個のものである一部の実施形態では、支持体は、微生物が増殖しないように保護すべき物品を含むことができる。例としては、船の船体、処理池、パイプ、脱塩フィルタ、エアフィルタ、HVACシステム構成要素、病院設備および調度品、カウンター天板、化粧室調度品などがあげられるが、これらに限定されない。
酸化グラフェンの調製
GO調製:改良ハマーズ法を使用してグラファイトからGOを調製した。グラファイトフレーク(2.0g、Aldrich、100メッシュ)を、NaNO3(2.0g)とKMnO4(10g)と98%濃H2SO4(96mL)の混合物中、50℃で15時間、酸化させた。得られたペースト状混合物を氷(400g)に注入し、その後、30%過酸化水素(20mL)を添加した。得られた溶液を2時間撹拌して二酸化マンガンを還元し、濾紙に通して濾過し、脱イオン(DI)水で洗浄した。固体を回収し、撹拌によりDI水に分散させ、6300rpmで40分間遠心分離し、水性層をデマイエした(demayted)。残存固体をDI水に分散させ、洗浄プロセスを4回繰り返した。その後、精製されたGOを、GO分散液(0.4重量%)のために、超音波処理(20W)しながら2.5時間、DI水に分散させた。
抗微生物要素の調製
GO−PVA膜(AM−1)調製:実施例1.1で説明したように調製した4mg/mLの酸化グラフェン(GO)水性分散液を脱イオン水により0.1重量に希釈した。その後、32.0gの得られた0.1重量%酸化グラフェン水性分散液を、40.0gの2.5重量%PVA水溶液(Aldrich)からなる混合物に添加した。その後、その得られた混合物を室温で10分間撹拌した。得られた溶液を、逆浸透(RO)膜(ESPA膜、Hydranautics)上に、その膜の表面へのその溶液の滴下、90cm2当り0.6g、によりキャストした。空気中で乾燥させた後、膜を30分間85℃の炉に入れて水を除去し、膜を架橋させ、その結果、厚さ1.4μmであり、それぞれ3.1重量%と96.9重量%の質量比のGO/PVAを有する膜、すなわちAM−1を得た。
ストック支持層の調製
Hydranautics膜(CM−1)調製:別の例(CM−1)では、Hydranauticsからのストック逆浸透(RO)膜(ESPA膜、Hydranautics)から膜を切断した。
抗微生物特性の測定。
膜抗微生物特性を試験するために、抗微生物製品の効力の試験についての日本工業規格(JIS)Z 2801:2012(2012年9月発行の英語版)に準拠する手順を使用して実施例AM−1を測定した。前記参考文献は、その全体が本明細書に援用される。抗微生物能力の検証に使用した生物は、大腸菌(ATCC(登録商標)8739、ATCC)であった。
さらなる抗微生物要素の調製および試験
様々な比で異なる架橋剤を使用してAM−1と同様の手法で多数の抗微生物要素を調製し、様々な厚さで堆積させた。一部の試料では、さらなる架橋剤または他の材料を使用して、それらの材料の性能に対する作用を試験した。各抗微生物要素の詳細および各々について得た結果を下の表2に示す。
支持体、および
酸化グラフェン化合物と架橋剤とを含む複合材
を含み、前記複合材が前記支持体を被覆している、抗微生物膜であって、
2.0以上の抗菌効果を有することにより判定して、微生物の増殖を防除する抗微生物膜であり、
前記架橋剤が、ポリビニルアルコール、バイオポリマー、アクリルアミドコポリマーのうちの少なくとも1つを含む、抗微生物膜。
(実施態様2)
前記バイオポリマーが、リグニンスルホン酸塩であり、前記アクリルアミドコポリマーが、ポリ(N−イソプロピルアクリルアミド)を含む、実施態様1に記載の膜。
(実施態様3)
前記アクリルアミドコポリマーが、ポリ(N−イソプロピルアクリルアミド−co−N,N’−メチレン−ビス−アクリルアミド)を含む、実施態様1または2に記載の膜。
(実施態様4)
前記複合材が、四ホウ酸カリウム、3,5−ジアミノ安息香酸、および2,5−ジヒドロキシテレフタル酸のうちの少なくとも1つをさらに含む、実施態様1、2または3に記載の膜。
(実施態様5)
前記複合材が、スペーサー材料をさらに含む、実施態様1、2、3または4に記載の膜。
(実施態様6)
前記スペーサー材料が、シリカ、Fe3O4、TiO2、ZrO2またはAl2O3のナノ粒子を含む、実施態様5に記載の膜。
(実施態様7)
前記スペーサー材料が、約5nm〜約300nmの範囲の粒径を有する、実施態様5または6に記載の膜。
(実施態様8)
前記スペーサー材料が、複合材塗膜に対して約3%〜約8%の重量百分率を有する、実施態様5、6または7に記載の膜。
(実施態様9)
前記スペーサー材料が、複合材塗膜に対して約5%〜約7%の重量百分率を有する、実施態様5、6または7に記載の膜。
(実施態様10)
前記複合材中の前記酸化グラフェンの前記架橋剤に対する質量比が、1:1000〜20:1の範囲の値である、実施態様1、2、3、4、5、6、7、8または9に記載の膜。
(実施態様11)
前記複合材中の前記酸化グラフェンの前記架橋剤に対する質量比が、10:1〜1:90の範囲の値である、実施態様1、2、3、4、5、6、7、8または9に記載の膜。
(実施態様12)
前記複合材中の前記酸化グラフェンの前記架橋剤に対する質量比が、10:1〜8:1の範囲の値である、実施態様1、2、3、4、5、6、7、8または9に記載の膜。
(実施態様13)
前記支持体上の前記複合材塗膜が、約0.01μm〜約4.5μmの厚さを有する、実施態様1、2、3、4、5、6、7、8、9、10、11または12に記載の膜。
(実施態様14)
前記支持体上の前記複合材塗膜が、約0.05μm〜約3μmの厚さを有する、実施態様1、2、3、4、5、6、7、8、9、10、11または12に記載の膜。
(実施態様15)
前記支持体上の前記複合材塗膜が、約0.05μm〜約0.6μmの厚さを有する、実施態様1、2、3、4、5、6、7、8、9、10、11または12に記載の膜。
(実施態様16)
前記複合材を前記支持体に塗布する工程、および結果として生じた膜を約60℃〜約200℃の温度に約2分〜約150分間にわたって曝露する工程により調製される、実施態様1、2、3、4、5、6、7、8、9、10、11、12、13、14または15に記載の膜。
(実施態様17)
前記複合材を前記支持体に塗布する工程、および結果として生じた膜を約70℃〜約150℃の温度に約3分〜約120分間にわたって曝露する工程により調製される、実施態様1、2、3、4、5、6、7、8、9、10、11、12、13、14または15に記載の膜。
(実施態様18)
前記支持体が、微生物が増殖しないように保護すべき物品である、実施態様1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16または17に記載の膜。
(実施態様19)
前記架橋剤が、ポリビニルアルコールであり、前記複合材が、約50nm〜約3μmの厚さを有する、実施態様1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17または18に記載の膜。
(実施態様20)
前記複合材が、四ホウ酸カリウムをさらに含み、前記複合材が、約50nm〜約150nmの厚さを有する、実施態様19に記載の膜。
(実施態様21)
前記複合材が、2,5−ジヒドロキシテレフタル酸をさらに含み、全組成物に対する酸化グラフェンの含量が、約60重量%〜約80重量%であり、前記複合材が、約50nm〜約150μmの厚さを有する、実施態様20に記載の膜。
(実施態様22)
前記複合材が、3,5−ジアミノ安息香酸をさらに含み、前記複合材が、約700nm〜約2μmの厚さを有する、実施態様19に記載の膜。
(実施態様23)
前記架橋剤が、バイオポリマーを含み、前記複合材が、約100nm〜約2μmの厚さを有する、実施態様1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17または18に記載の膜。
(実施態様24)
前記架橋剤が、ポリ(N−イソプロピルアクリルアミド)を含み、前記複合材が、約700nm〜約2μmの厚さを有する、実施態様1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17または18に記載の膜。
(実施態様25)
前記複合材が、シリカナノ粒子をさらに含む、実施態様1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17、18、19、20、21、22、23または24に記載の膜。
(実施態様26)
前記シリカナノ粒子が、約2nm〜約20nm、約50nm〜約100nm、または約150nm〜約300nmの粒径を有する、実施態様25に記載の膜。
(実施態様27)
前記シリカナノ粒子が、約5nm〜約10nm、約70nm〜約9nm、または約180nm〜約220nmの粒径を有する、実施態様25に記載の膜。
(実施態様28)
微生物増殖を防止する方法であって、
実施態様1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17、18、19、20、21、22、23、24、25、26、27または28に記載の膜を用意するステップ、および
微生物を含有する作動流体に前記膜を曝露するステップ
を含み、
前記膜が、2.0以上の抗菌効果を有することにより判定して、前記作動流体への曝露の結果として微生物の増殖を防除する、方法。
Claims (28)
- 支持体、および
酸化グラフェン化合物と架橋剤とを含む複合材
を含み、前記複合材が前記支持体を被覆している、抗微生物膜であって、
2.0以上の抗菌効果を有することにより判定して、微生物の増殖を防除する抗微生物膜であり、
前記架橋剤が、ポリビニルアルコール、バイオポリマー、アクリルアミドコポリマーのうちの少なくとも1つを含む、抗微生物膜。 - 前記バイオポリマーが、リグニンスルホン酸塩であり、前記アクリルアミドコポリマーが、ポリ(N−イソプロピルアクリルアミド)を含む、請求項1に記載の膜。
- 前記アクリルアミドコポリマーが、ポリ(N−イソプロピルアクリルアミド−co−N,N’−メチレン−ビス−アクリルアミド)を含む、請求項1または2に記載の膜。
- 前記複合材が、四ホウ酸カリウム、3,5−ジアミノ安息香酸、および2,5−ジヒドロキシテレフタル酸のうちの少なくとも1つをさらに含む、請求項1、2または3に記載の膜。
- 前記複合材が、スペーサー材料をさらに含む、請求項1、2、3または4に記載の膜。
- 前記スペーサー材料が、シリカ、Fe3O4、TiO2、ZrO2またはAl2O3のナノ粒子を含む、請求項5に記載の膜。
- 前記スペーサー材料が、約5nm〜約300nmの範囲の粒径を有する、請求項5または6に記載の膜。
- 前記スペーサー材料が、複合材塗膜に対して約3%〜約8%の重量百分率を有する、請求項5、6または7に記載の膜。
- 前記スペーサー材料が、複合材塗膜に対して約5%〜約7%の重量百分率を有する、請求項5、6または7に記載の膜。
- 前記複合材中の前記酸化グラフェンの前記架橋剤に対する質量比が、1:1000〜20:1の範囲の値である、請求項1、2、3、4、5、6、7、8または9に記載の膜。
- 前記複合材中の前記酸化グラフェンの前記架橋剤に対する質量比が、10:1〜1:90の範囲の値である、請求項1、2、3、4、5、6、7、8または9に記載の膜。
- 前記複合材中の前記酸化グラフェンの前記架橋剤に対する質量比が、10:1〜8:1の範囲の値である、請求項1、2、3、4、5、6、7、8または9に記載の膜。
- 前記支持体上の前記複合材塗膜が、約0.01μm〜約4.5μmの厚さを有する、請求項1、2、3、4、5、6、7、8、9、10、11または12に記載の膜。
- 前記支持体上の前記複合材塗膜が、約0.05μm〜約3μmの厚さを有する、請求項1、2、3、4、5、6、7、8、9、10、11または12に記載の膜。
- 前記支持体上の前記複合材塗膜が、約0.05μm〜約0.6μmの厚さを有する、請求項1、2、3、4、5、6、7、8、9、10、11または12に記載の膜。
- 前記複合材を前記支持体に塗布する工程、および結果として生じた膜を約60℃〜約200℃の温度に約2分〜約150分間にわたって曝露する工程により調製される、請求項1、2、3、4、5、6、7、8、9、10、11、12、13、14または15に記載の膜。
- 前記複合材を前記支持体に塗布する工程、および結果として生じた膜を約70℃〜約150℃の温度に約3分〜約120分間にわたって曝露する工程により調製される、請求項1、2、3、4、5、6、7、8、9、10、11、12、13、14または15に記載の膜。
- 前記支持体が、微生物が増殖しないように保護すべき物品である、請求項1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16または17に記載の膜。
- 前記架橋剤が、ポリビニルアルコールであり、前記複合材が、約50nm〜約3μmの厚さを有する、請求項1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17または18に記載の膜。
- 前記複合材が、四ホウ酸カリウムをさらに含み、前記複合材が、約50nm〜約150nmの厚さを有する、請求項19に記載の膜。
- 前記複合材が、2,5−ジヒドロキシテレフタル酸をさらに含み、全組成物に対する酸化グラフェンの含量が、約60重量%〜約80重量%であり、前記複合材が、約50nm〜約150μmの厚さを有する、請求項20に記載の膜。
- 前記複合材が、3,5−ジアミノ安息香酸をさらに含み、前記複合材が、約700nm〜約2μmの厚さを有する、請求項19に記載の膜。
- 前記架橋剤が、バイオポリマーを含み、前記複合材が、約100nm〜約2μmの厚さを有する、請求項1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17または18に記載の膜。
- 前記架橋剤が、ポリ(N−イソプロピルアクリルアミド)を含み、前記複合材が、約700nm〜約2μmの厚さを有する、請求項1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17または18に記載の膜。
- 前記複合材が、シリカナノ粒子をさらに含む、請求項1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17、18、19、20、21、22、23または24に記載の膜。
- 前記シリカナノ粒子が、約2nm〜約20nm、約50nm〜約100nm、または約150nm〜約300nmの粒径を有する、請求項25に記載の膜。
- 前記シリカナノ粒子が、約5nm〜約10nm、約70nm〜約9nm、または約180nm〜約220nmの粒径を有する、請求項25に記載の膜。
- 微生物増殖を防止する方法であって、
請求項1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17、18、19、20、21、22、23、24、25、26、27または28に記載の膜を用意するステップ、および
微生物を含有する作動流体に前記膜を曝露するステップ
を含み、
前記膜が、2.0以上の抗菌効果を有することにより判定して、前記作動流体への曝露の結果として微生物の増殖を防除する、方法。
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PCT/US2017/050679 WO2018049160A1 (en) | 2016-09-08 | 2017-09-08 | Graphene oxide anti-microbial element |
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US20220040645A1 (en) * | 2018-09-18 | 2022-02-10 | Nitto Denko Corporation | Selectively permeable graphene oxide membrane |
CN110240814B (zh) * | 2019-06-18 | 2021-01-15 | 山东大学 | 一种双亲性氧化石墨烯及其制备方法和在水性涂料中的应用 |
CN110280144B (zh) * | 2019-06-27 | 2022-01-04 | 三达膜科技(厦门)有限公司 | 一种氧化铝/氧化石墨烯/聚乙烯醇复合纳滤膜的制备方法 |
CN110743393A (zh) * | 2019-11-19 | 2020-02-04 | 北京林业大学 | 一种木质素基聚芳酯复合纳滤膜的制备 |
CN111420564B (zh) * | 2020-03-05 | 2021-01-19 | 浙江美易膜科技有限公司 | 一种含氧化石墨烯的无机复合分离膜及其制备方法与应用 |
KR102427240B1 (ko) * | 2021-11-02 | 2022-08-01 | 정영숙 | 항균성 용품 |
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US20190194474A1 (en) | 2019-06-27 |
WO2018049160A8 (en) | 2018-04-05 |
EP3824993A3 (en) | 2021-08-18 |
KR20190044120A (ko) | 2019-04-29 |
CA3036369A1 (en) | 2018-03-15 |
JP6744987B2 (ja) | 2020-08-19 |
EP3509730A1 (en) | 2019-07-17 |
EP3824993A2 (en) | 2021-05-26 |
WO2018049160A1 (en) | 2018-03-15 |
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