JPWO2017014086A1 - 殺菌作用を備えた表面を有する合成高分子膜およびそれを備えるフィルム - Google Patents
殺菌作用を備えた表面を有する合成高分子膜およびそれを備えるフィルム Download PDFInfo
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- JPWO2017014086A1 JPWO2017014086A1 JP2017529556A JP2017529556A JPWO2017014086A1 JP WO2017014086 A1 JPWO2017014086 A1 JP WO2017014086A1 JP 2017529556 A JP2017529556 A JP 2017529556A JP 2017529556 A JP2017529556 A JP 2017529556A JP WO2017014086 A1 JPWO2017014086 A1 JP WO2017014086A1
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- aluminum
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- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- 230000003641 microbiacidal effect Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
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- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
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- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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- 238000003756 stirring Methods 0.000 description 1
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- 238000004381 surface treatment Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
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- 230000001131 transforming effect Effects 0.000 description 1
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- YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 description 1
- WYXIGTJNYDDFFH-UHFFFAOYSA-Q triazanium;borate Chemical compound [NH4+].[NH4+].[NH4+].[O-]B([O-])[O-] WYXIGTJNYDDFFH-UHFFFAOYSA-Q 0.000 description 1
- 241000712461 unidentified influenza virus Species 0.000 description 1
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Abstract
Description
まず、試料フィルムNo.1およびNo.2について殺菌性を評価した。殺菌性の評価は、以下の手順で行った。
2.遠心分離(3000rpm、10分間)
3.培養液の上澄み液を捨てる
4.滅菌水を入れて撹拌した後、再び遠心分離
5.上記2〜4の操作を3回繰り返すことによって菌原液(菌数は1E+07CFU/mLのオーダー)を得る
6.1/500NB培地および菌希釈液A(菌数は1E+05CFU/mLのオーダー)を調製
1/500NB培地:NB培地(栄研化学株式会社製、普通ブイヨン培地E−MC35)を滅菌水で500倍に希釈
菌希釈液A:菌原液500μL+滅菌水49.5mL
7.菌希釈液Aに、栄養源として1/500NB培地を添加した菌希釈液Bを調製(JISZ2801の5.4a)に準拠)
8.菌希釈液B(この時の菌希釈液B中の菌数を初期菌数ということがある)を各試料フィルム上に400μLを滴下し、菌希釈液B上にカバー(例えばカバーガラス)を配置し、単位面積当たりの菌希釈液Bの量を調整
9.一定時間37℃、相対湿度100%の環境で放置する(放置時間:5分、4時間、24時間または48時間)
10.菌希釈液Bが付いた試料フィルム全体と滅菌水9.6mLとを濾過袋に入れ、濾過袋の上から手で揉んで、試料フィルムの菌を十分に洗い流す。濾過袋の中の洗い出し液は、菌希釈液Bが25倍に希釈されたものである。この洗い出し液を菌希釈液B2ということがある。菌希釈液B2は、菌希釈液B中の菌数の増減がない場合は、菌数1E+04CFU/mLのオーダーとなる。
11.菌希釈液B2を10倍希釈して菌希釈液Cを調製する。具体的には、洗い出し液(菌希釈液B2)120μLを滅菌水1.08mLに入れて調製する。菌希釈液Cは、菌希釈液B中の菌数の増減がない場合は、菌数1E+03CFU/mLのオーダーとなる。
12.菌希釈液Cの調製と同じ方法で、菌希釈液Cを10倍希釈して菌希釈液Dを調製する。菌希釈液Dは、菌希釈液B中の菌数の増減がない場合は、菌数1E+02CFU/mLのオーダーとなる。さらに、菌希釈液Dを10倍希釈して菌希釈液Eを調製する。菌希釈液Eは、菌希釈液B中の菌数の増減がない場合は、菌数1E+01CFU/mLのオーダーとなる。
13.菌希釈液B2および菌希釈液C〜Eをペトリフィルム(登録商標)培地(3M社製、製品名:生菌数測定用ACプレート)に1mLを滴下して、37℃、相対湿度100%で培養して48時間後に菌希釈液B2中の菌数をカウントする。
次に、初期菌数の値を変更して、試料フィルムNo.2およびNo.3の殺菌性を評価した。実験1では1E+05CFU/mLオーダーであったのに対し、実験2においては初期菌数を1E+06CFU/mLオーダーとした。評価の手順は、実験1と基本的に同じである。ただし、37℃、相対湿度100%の環境で放置する時間(放置時間)は67.5時間とした。
続いて、初期菌数を2.5E+06CFU/mLとし、かつ、菌希釈液B中の栄養源を実験1の10倍に増加させた条件で、試料フィルムNo.1〜No.5の殺菌性を評価した。すなわち、上記菌希釈液Aに、栄養源として1/50NB培地(NB培地(栄研化学株式会社製、普通ブイヨン培地E−MC35)を滅菌水で50倍に希釈)を添加して菌希釈液Bを調製した。
実験4においては、下記の表1に示す7種類の試料フィルムNo.10〜No.16について、殺菌性を評価した。
次に、下記の表2に示す試料フィルムNo.17およびNo.18について、殺菌性を評価した。
次に、下記の表3に示す試料フィルムNo.19〜No.22について、殺菌性を評価した。
合成高分子膜の表面に指紋等の汚れが付着することが考えられる。モスアイ構造を有するフィルム(合成高分子膜)に指紋が付着すると、付着した指紋(指の脂)が広がりやすく、汚れが目立つという問題がある。また、洗浄液や布を用いても指紋を除去することが困難であり、また、強く拭くとモスアイ構造(凸部)が破壊され、殺菌作用が失われることが懸念される。
34Ap、34Bp 凸部
42A、42B ベースフィルム
50A、50B フィルム
100、100A、100B モスアイ用型
Claims (10)
- 複数の凸部を有する表面を備える合成高分子膜であって、
前記合成高分子膜の法線方向から見たとき、前記複数の凸部の2次元的な大きさは20nm超500nm未満の範囲内にあり、前記表面が殺菌効果を有し、
前記合成高分子膜は、ウレタン樹脂とシリコーンオイルとを含み、
前記シリコーンオイルのHLB値は、14以上18以下である、合成高分子膜。 - 前記表面に含まれる窒素元素の濃度が0.7at%以上である、請求項1に記載の合成高分子膜。
- 前記ウレタン樹脂が有する官能基は10個未満である、請求項1または2に記載の合成高分子膜。
- 前記ウレタン樹脂が有する官能基は6個未満である、請求項1から3のいずれかに記載の合成高分子膜。
- 前記ウレタン樹脂は、ウレタンアクリレート樹脂を含む、請求項1から4のいずれかに記載の合成高分子膜。
- アミノ基、イソシアネート基およびシアノ基のいずれかを有する、請求項1から5のいずれかに記載の合成高分子膜。
- 末端官能基が−NH2または−NHR(ここで、Rは炭化水素基を表す)である化合物を含む、請求項1から6のいずれかに記載の合成高分子膜。
- 前記シリコーンオイルの含有量は、前記ウレタン樹脂に対して10質量%以上20質量%未満である、請求項1から7のいずれかに記載の合成高分子膜。
- ベースフィルムと、前記ベースフィルム上に形成された請求項1から8のいずれかに記載の合成高分子膜とを有する、フィルム。
- 前記ベースフィルムは着色されたまたは可視光に対して不透明なプラスチックフィルムである、請求項9に記載のフィルム。
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