JPH04126530A - Antifungal liquid separation membrane - Google Patents
Antifungal liquid separation membraneInfo
- Publication number
- JPH04126530A JPH04126530A JP24514390A JP24514390A JPH04126530A JP H04126530 A JPH04126530 A JP H04126530A JP 24514390 A JP24514390 A JP 24514390A JP 24514390 A JP24514390 A JP 24514390A JP H04126530 A JPH04126530 A JP H04126530A
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- separation membrane
- liquid separation
- water
- sodalite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 64
- 238000000926 separation method Methods 0.000 title claims abstract description 35
- 239000007788 liquid Substances 0.000 title claims abstract description 16
- 230000000843 anti-fungal effect Effects 0.000 title abstract 3
- 229940121375 antifungal agent Drugs 0.000 title abstract 2
- 229910052665 sodalite Inorganic materials 0.000 claims abstract description 13
- 239000010419 fine particle Substances 0.000 claims abstract description 6
- 230000000844 anti-bacterial effect Effects 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 229920000642 polymer Polymers 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 6
- 229920002492 poly(sulfone) Polymers 0.000 abstract description 5
- 239000004695 Polyether sulfone Substances 0.000 abstract description 4
- 238000005342 ion exchange Methods 0.000 abstract description 4
- 229920006393 polyether sulfone Polymers 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 3
- 239000003518 caustics Substances 0.000 abstract description 2
- 239000002734 clay mineral Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000001223 reverse osmosis Methods 0.000 abstract description 2
- 241000233866 Fungi Species 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000006193 liquid solution Substances 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 9
- 229910052709 silver Inorganic materials 0.000 description 9
- 239000004332 silver Substances 0.000 description 9
- 241000894006 Bacteria Species 0.000 description 8
- 239000002202 Polyethylene glycol Substances 0.000 description 5
- 229920001223 polyethylene glycol Polymers 0.000 description 5
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- SJNNZXIPFSRUJB-UHFFFAOYSA-N 4-[2-[2-[2-(4-formylphenoxy)ethoxy]ethoxy]ethoxy]benzaldehyde Chemical compound C1=CC(C=O)=CC=C1OCCOCCOCCOC1=CC=C(C=O)C=C1 SJNNZXIPFSRUJB-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 241000191940 Staphylococcus Species 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910001583 allophane Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910001410 inorganic ion Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【発明の詳細な説明】
皮栗上皇科朋分立
本発明は、膜における細菌やカビの繁殖が抑制される主
として水系液体の分離に用いられる抗菌性液体分離膜に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an antibacterial liquid separation membrane used mainly for separating aqueous liquids, which inhibits the growth of bacteria and mold in the membrane.
災米■肢歪
液体分離膜は、一般に、水による湿潤下に保存され、ま
た、水に浸漬された状態で用いられるために、細菌やカ
ビが発生しやすく、また、これら細菌やカビが分離膜に
発生すると、処理液が腐敗したり、或いは異臭を有する
こととなる。更に、細菌やカビは、膜内体を劣化させ、
分離機能を低下させる。Liquid separation membranes are generally stored in a wet state with water, and are used immersed in water, so bacteria and mold are likely to grow on them, and these bacteria and mold can be easily separated. If it occurs in the membrane, the processing solution will spoil or have a strange odor. Furthermore, bacteria and mold deteriorate the inner membrane,
Decreases separation function.
そこで、液体分離膜の保存中における細菌やカビの発生
を防止するために、従来、ホルマリン水や過酸化水素水
等の薬品で分離膜を処理して、抗菌性を付与することが
行なわれている。このように、薬品にて分離膜を抗菌処
理する方法は、短期的には、効果が大きいものの、膜の
保存期間が長くなるにつれて、薬品が消耗したり、飛散
したりして、分離膜に細菌やカビが容易に発生する。ま
た、液体分離に用いている間に、膜から速やかに抗菌効
果が失なわれるので、膜の抗菌性を保持するは、膜を頻
繁に薬品処理する必要がある。Therefore, in order to prevent the growth of bacteria and mold during storage of liquid separation membranes, conventional methods have been to treat separation membranes with chemicals such as formalin water and hydrogen peroxide to impart antibacterial properties. There is. In this way, the method of antibacterial treatment of separation membranes with chemicals is highly effective in the short term, but as the storage period of the membrane increases, the chemicals wear out or scatter, causing damage to the separation membrane. Bacteria and mold can easily grow. Furthermore, since the membrane quickly loses its antibacterial effect while being used for liquid separation, it is necessary to frequently treat the membrane with chemicals to maintain its antibacterial properties.
他方、液体処理の間においても、膜内体が抗菌性を有す
る分離膜として、特公昭５５−１６０５８号公報には、
アクリル酸銀を単量体成分として含有する重合体とセル
ロースエステルとからなる分離膜が提案されている。こ
の分離膜によれば、抗菌効果はある程度持続されるが、
液体処理の間に銀がイオン交換作用によって膜から失な
われるにつれて、抗菌効果も失なわれる。更に、アクリ
ル酸銀を単量体成分として含有する重合体は、親水性が
強いために、本来の分離機能を有する膜を形成する重合
体素材と相溶性に劣り、得られる分離膜が本来の分離機
能に劣ることがある。On the other hand, Japanese Patent Publication No. 55-16058 describes a separation membrane whose internal membrane has antibacterial properties even during liquid processing.
A separation membrane made of a polymer containing silver acrylate as a monomer component and a cellulose ester has been proposed. Although this separation membrane maintains its antibacterial effect to some extent,
As silver is lost from the membrane by ion exchange during liquid processing, the antimicrobial effect is also lost. Furthermore, because polymers containing silver acrylate as a monomer component have strong hydrophilic properties, they have poor compatibility with the polymer material that forms the membrane that has the original separation function, and the resulting separation membrane does not have the original separation function. The separation function may be inferior.
が”しよ゛と る１
本発明は、従来の抗菌性液体分離膜における上記した問
題を解決するためになされたものであって、長期間にわ
たる水中での保存によっても、高い抗菌性を保持し、従
って、当初の阻止率や透過水量を保持する抗菌性液体分
離膜を提供することを目的とする。1 The present invention was made to solve the above-mentioned problems with conventional antibacterial liquid separation membranes, and it maintains high antibacterial properties even when stored in water for a long period of time. Therefore, it is an object of the present invention to provide an antibacterial liquid separation membrane that maintains the original rejection rate and amount of permeated water.
１ ′ るための
本発明による抗菌性液体分離膜は、膜中に銀型ソーダラ
イト微粒子が分散されていることを特徴とする。1' The antibacterial liquid separation membrane according to the present invention is characterized in that silver-type sodalite fine particles are dispersed in the membrane.
本発明において、液体分離膜は、逆浸透膜、限外濾過膜
及び精密濾過膜のいずれでもよい。In the present invention, the liquid separation membrane may be any of a reverse osmosis membrane, an ultrafiltration membrane, and a precision filtration membrane.
本発明において、分離膜を構成する素材重合体としては
、酢酸セルロース、ポリスルホン、ポリエーテルスルホ
ン、ポリイミド、ポリアミド、ポリフッ化ビニリデン、
ポリアクリロニトリル、アクリロニトリル共重合体、エ
チレン−ビニルアルコール共重合体等を挙げることがで
きるが、これらに限定されるものではない。しかし、こ
れらのなかでは、ポリスルホン、ポリエーテルスルホン
又はエチレン−ビニルアルコール共重合体が好ましい。In the present invention, the material polymers constituting the separation membrane include cellulose acetate, polysulfone, polyethersulfone, polyimide, polyamide, polyvinylidene fluoride,
Examples include, but are not limited to, polyacrylonitrile, acrylonitrile copolymer, ethylene-vinyl alcohol copolymer, and the like. However, among these, polysulfone, polyethersulfone or ethylene-vinyl alcohol copolymer are preferred.
ソーダライトは、カオリン、アロフェン等の粘土鉱物を
苛性アルカリ水溶液中で熱処理することによって得られ
る無機イオン交換体の一種である。Sodalite is a type of inorganic ion exchanger obtained by heat-treating clay minerals such as kaolin and allophane in an aqueous caustic solution.
このようなソーダライトは、通常、ナトリウム型である
が、本発明による分離膜においては、予めイオン交換に
よって銀型に変換された銀型ソーダライト微粒子が膜中
に分散されている。Such sodalite is normally of the sodium type, but in the separation membrane according to the present invention, silver type sodalite fine particles that have been previously converted to the silver type by ion exchange are dispersed in the membrane.
本発明による抗菌性液体分離膜は、分離膜を構成する膜
素材重合体の溶液、即ち、ドープに上述したような銀型
ソーダライト微粒子を上記重合体１００重量部に対して
０．０１〜５０重量部を加え、分散させ、必要に応じて
、脱気した後、従来より知られている所謂相転換法によ
って得ることができる。銀型ソーダライト微粒子は、ド
ープへの分散がよく、且つ、得られる分離膜の性能を低
下さゼないように、その粒径が２０μｍ以下であること
が好ましく、特に２μｍ以下であることが好ましい。In the antibacterial liquid separation membrane according to the present invention, the solution of the membrane material polymer constituting the separation membrane, that is, the dope, contains 0.01 to 50 parts by weight of the above-mentioned silver sodalite fine particles per 100 parts by weight of the polymer. After adding parts by weight, dispersing and, if necessary, degassing, it can be obtained by a conventionally known so-called phase conversion method. The silver-type sodalite fine particles preferably have a particle size of 20 μm or less, particularly preferably 2 μm or less, so that they are well dispersed in the dope and do not reduce the performance of the resulting separation membrane. .
ドープを形成する溶剤としては、膜素材である重合体を
溶解すると共に、水と任意の割合で混和するものであれ
ば特に限定されないが、例えば、Ｎ、Ｎ−ジメチルホル
ムアミド、Ｎ−メチル−２−ピロリドン、Ｎ、Ｎ−ジメ
チルアセトアミド、ジメチルスルホキシド、アセトン等
が好ましく用いられる。The solvent for forming the dope is not particularly limited as long as it dissolves the polymer that is the membrane material and is miscible with water in any proportion; for example, N,N-dimethylformamide, N-methyl-2 -pyrrolidone, N,N-dimethylacetamide, dimethylsulfoxide, acetone, etc. are preferably used.
ドープ中の重合体濃度は、通常、１０〜４０重量％の範
囲である。この濃度が低すぎるときは、ドープの粘度が
低すぎて、例えば、平板状膜を製造するに際して、ドー
プを支持体上に均一に塗布することが困難となり、２均
一な分離膜を得ることが困難となる。他方、ドープ中の
重合体濃度が高すぎるときは、ドープの粘度が過度に高
くなって、同様に、支持体に均一に塗布することが困難
となる。The polymer concentration in the dope usually ranges from 10 to 40% by weight. If this concentration is too low, the viscosity of the dope will be too low, making it difficult to uniformly coat the dope on the support, for example, when manufacturing a flat membrane, making it difficult to obtain a uniform separation membrane. It becomes difficult. On the other hand, if the polymer concentration in the dope is too high, the viscosity of the dope will become too high and it will also be difficult to uniformly coat the support.
ドープには、得られる分離膜の微孔孔径を調整するため
に、添加剤が配合されてもよい。かかる添加剤としては
、例えば、塩化リチウム、硝酸リチウム等のような無機
塩、ホルムアミド、エチレングリコール、ポリエチレン
グリコール等のような親水性有機化合物が好ましく用い
られる。このような添加剤の配合量が余りに少ないとき
は、得られる分離膜の孔径を調整する効果がな（、他方
、余りに多いときは、均一なドープを得難いうえに、ド
ープが製膜前に凝固することもある。従って、添加剤は
、重合体１００重量部に対して、通常、１〜２００重量
部、好ましくは５〜１５０重量部の範囲で用いられる。Additives may be added to the dope in order to adjust the micropore diameter of the resulting separation membrane. As such additives, for example, inorganic salts such as lithium chloride, lithium nitrate, etc., and hydrophilic organic compounds such as formamide, ethylene glycol, polyethylene glycol, etc. are preferably used. If the amount of such additives is too small, it will not be effective in adjusting the pore size of the resulting separation membrane (on the other hand, if it is too large, it will be difficult to obtain a uniform dope, and the dope will solidify before film formation. Therefore, the additive is usually used in an amount of 1 to 200 parts by weight, preferably 5 to 150 parts by weight, based on 100 parts by weight of the polymer.
前記支持体としては、例えば、ガラス、金属板、織布、
不織布等が用いられる。このような支持体上にドープを
流延し、その後、水中に浸漬することによって、平板状
の膜を得ることができる。しかし、本発明においては、
膜形状は何ら限定されるものではな（、環状ノズルから
水中に押し出すことによって、環状又は中空糸状の分離
膜を得ることができる。Examples of the support include glass, metal plate, woven fabric,
Non-woven fabric etc. are used. A flat membrane can be obtained by casting a dope onto such a support and then immersing it in water. However, in the present invention,
The shape of the membrane is not limited at all (by extruding it into water from an annular nozzle, an annular or hollow fiber-shaped separation membrane can be obtained).
光１１υ伽果
本発明の半透膜によれば、長期間にわたる水中保存によ
っても、膜に細菌やカビが発生繁殖せず、従って、膜性
能の変化なしに一分離膜を長期間にわたって水中に保存
することができる。According to the semipermeable membrane of the present invention, bacteria and mold do not grow and propagate on the membrane even when stored in water for a long period of time. Can be saved.
皇族■
以下に実施例を挙げて本発明を説明するが、本発明はこ
れら実施例により何ら限定されるものではない。Royal Family ■ The present invention will be described below with reference to Examples, but the present invention is not limited to these Examples in any way.
実施例１
ソーダライトを予めイオン交換によって銀型とし、精製
した平均粒径１．５μｍ、銀５重量％を含む銀型ソーダ
ライトを１２０℃で３時間乾燥した。Example 1 Sodalite was previously made into a silver type by ion exchange, and the purified silver type sodalite having an average particle size of 1.5 μm and containing 5% by weight of silver was dried at 120° C. for 3 hours.
ガラス製フラスコにＮ、Ｎ−ジメチルアセトアミド７０
０ｇを入れ、攪拌しながら、これに上記銀型ソーダライ
トを５ｇを少しずつ加え、分散させた。この後、８０℃
に加熱し、ホルムアミド１００ｇを加えた。更に、ポリ
スルホンＰ１７００（アムコ社製）１８０ｇを加え、約
８時間、攪拌し、溶解させて、ドープを調製した。N,N-dimethylacetamide 70 in a glass flask
0g of the above-mentioned silver type sodalite was added little by little to this while stirring, and dispersed. After this, 80℃
100 g of formamide was added. Furthermore, 180 g of polysulfone P1700 (manufactured by Amco) was added, and the mixture was stirred and dissolved for about 8 hours to prepare a dope.
このドープを一晩放置して、脱泡した後、ガラス板上に
３００μｍのギャップにてキャスティングし、直ちに水
中に浸漬して、凝固させた。水中に一晩放置した後、膜
性能を評価した。尚、この膜は、ポリスルホン１０重量
部当りに銀２．７重量部を含む。This dope was left to stand overnight to defoam, then cast onto a glass plate with a gap of 300 μm, and immediately immersed in water to solidify. Membrane performance was evaluated after standing in water overnight. This film contains 2.7 parts by weight of silver per 10 parts by weight of polysulfone.
バッチ式テストセルに上記膜を取付け、平均分子量２０
０００のポリエチレングリコールの０．５重量％水溶液
を圧力２ｋｇ／ｃｄで透過試験（以下、同じ。）したと
ころ、ポリエチレングリコールの阻止率は８５％、純水
透過水量は６１ｆｆｉ／ｎ（・時・ｋｇ／Ｃ１ａであっ
た。The above membrane was installed in a batch type test cell, and the average molecular weight was 20.
When a 0.5% by weight aqueous solution of polyethylene glycol 000 was permeated at a pressure of 2 kg/cd (the same applies hereinafter), the rejection rate of polyethylene glycol was 85%, and the amount of pure water permeated was 61ffi/n (・hr・kg). /C1a.
実施例２
実施例１において、膜素材をポリエーテルスルホン（Ｉ
Ｃ１社製６００）に代えた以外は、実施例１と同様にし
て分離膜を得た。Example 2 In Example 1, the membrane material was polyether sulfone (I
A separation membrane was obtained in the same manner as in Example 1, except that 600) manufactured by C1 was used instead.
この膜のポリエチレングリコール阻止率は８４％、純水
透過水量は６０１１／ｒｄ−時・ｋｇ／ｃｄであった。The polyethylene glycol rejection rate of this membrane was 84%, and the amount of pure water permeated was 6011/rd-hour·kg/cd.
実施例３
実施例１において、膜素材をエチレン−ビニルアルコー
ル共重合体（ケン化度７０％）に代えた以外は、実施例
１と同様にして分離膜を得た。Example 3 A separation membrane was obtained in the same manner as in Example 1, except that the membrane material was replaced with an ethylene-vinyl alcohol copolymer (saponification degree of 70%).
この膜のポリエチレングリコール阻止率は８８％、純水
透過水量は１１！／ｒ＋？・時・ｋｇ ／ ｃａであっ
た。This membrane has a polyethylene glycol rejection rate of 88% and a pure water permeation rate of 11! /r+?・hour・kg/ca.
実施例４
実施例１〜３にて得た半透膜について、ブドウ球菌及び
大腸菌に対する抗菌力をＡＡＴＣＣ試験法１００−１９
８１に準じて試験した。結果を第１表に示す。生菌の減
少率（％）は、
に基づいて求めた。Example 4 The antibacterial activity of the semipermeable membranes obtained in Examples 1 to 3 against Staphylococcus and Escherichia coli was evaluated according to AATCC Test Method 100-19.
Tested according to 81. The results are shown in Table 1. The reduction rate (%) of viable bacteria was determined based on the following.
（以下、余白）
また、黒こうじカビに対する抗菌力をカビ抵抗性試験Ｊ
ＩＳ Ｚ２９１１繊維製品湿式法に準して試験したとこ
ろ、接種した部分に菌糸の発育が認められなかった。(Hereinafter, blank space) In addition, the antibacterial activity against Koji black mold was evaluated using the Mold Resistance Test J.
When tested according to IS Z2911 Textile Wet Method, no mycelial growth was observed in the inoculated area.
Claims (1)
特徴とする抗菌性液体分離膜。(1) An antibacterial liquid separation membrane characterized by dispersing silver-type sodalite fine particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24514390A JPH04126530A (en) | 1990-09-14 | 1990-09-14 | Antifungal liquid separation membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24514390A JPH04126530A (en) | 1990-09-14 | 1990-09-14 | Antifungal liquid separation membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04126530A true JPH04126530A (en) | 1992-04-27 |
Family
ID=17129265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24514390A Pending JPH04126530A (en) | 1990-09-14 | 1990-09-14 | Antifungal liquid separation membrane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04126530A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005072712A3 (en) * | 2003-12-16 | 2005-09-09 | Eastman Kodak Co | Antimicrobial composition |
| WO2016190356A1 (en) * | 2015-05-26 | 2016-12-01 | レンゴー株式会社 | Photoluminescent material |
-
1990
- 1990-09-14 JP JP24514390A patent/JPH04126530A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005072712A3 (en) * | 2003-12-16 | 2005-09-09 | Eastman Kodak Co | Antimicrobial composition |
| US7306777B2 (en) | 2003-12-16 | 2007-12-11 | Eastman Kodak Company | Antimicrobial composition |
| WO2016190356A1 (en) * | 2015-05-26 | 2016-12-01 | レンゴー株式会社 | Photoluminescent material |
| CN107614660A (en) * | 2015-05-26 | 2018-01-19 | 联合包装有限公司 | Embedded photoluminescent material |
| KR20180011788A (en) * | 2015-05-26 | 2018-02-02 | 렝고 가부시끼가이샤 | Photoluminescent material |
| US10619093B2 (en) | 2015-05-26 | 2020-04-14 | Rengo Co., Ltd. | Photoluminescent material |
| CN107614660B (en) * | 2015-05-26 | 2021-07-16 | 联合包装有限公司 | Photoluminescent material |
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