JP2005264382A - New deodorant material and method for producing the same - Google Patents
New deodorant material and method for producing the same Download PDFInfo
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Abstract
Description
本発明は、強い活性を有する新規な消臭性材料及びその製造方法に関するものである。 The present invention relates to a novel deodorant material having strong activity and a method for producing the same.
有機物の腐敗や分解により発生する悪臭は、環境汚染の１つとして大きな社会問題となっている。このため悪臭を除くために、燃焼法、ガス吸着法、マスキング法、中和法、消臭剤処理法、微生物処理法など多種多様の消臭方法が提案されている。 Odor generated by the decay or decomposition of organic matter is a major social problem as one of environmental pollution. For this reason, various odor eliminating methods such as a combustion method, a gas adsorption method, a masking method, a neutralization method, a deodorant treatment method, and a microorganism treatment method have been proposed in order to eliminate malodors.
この中で消臭剤処理法は最も一般的に行われている消臭法であり、これまでマグネシウム、アルミニウム、マンガン、銅、コバルト、カドミウム、銀又は亜鉛を層間に有する水膨潤性粘土鉱物からなる消臭剤（特許文献１参照）、粒状又は塊状の吸着体に、悪臭発生物質を分解したり吸着する能力をもつ金属錯体を担持させてなる消臭剤（特許文献２参照）、酸化物換算でコージェライト組成に対応するマグネシウム、ケイ素及びアルミニウムを含む結合剤と金属酸化物触媒との焼成物からなる消臭剤（特許文献３参照）、銅のような消臭機能を有する成分を担持した平均粒子径５００ｎｍ以下の無機酸化物微粒子を含む消臭剤（特許文献４参照）、コハクを担持した繊維からなる消臭性繊維（特許文献５参照）などが知られている。 Of these, the deodorant treatment method is the most commonly used deodorization method, and has so far been made from a water-swellable clay mineral having magnesium, aluminum, manganese, copper, cobalt, cadmium, silver or zinc between layers. Deodorant (see Patent Document 1), granular or lump adsorbent carrying a metal complex having the ability to decompose or adsorb malodorous substances (see Patent Document 2), oxide Deodorant consisting of a fired product of a metal oxide catalyst and a binder containing magnesium, silicon and aluminum corresponding to the cordierite composition in terms of conversion (see Patent Document 3), carrying a component having a deodorizing function such as copper A deodorant containing inorganic oxide fine particles having an average particle diameter of 500 nm or less (see Patent Document 4), a deodorant fiber composed of fibers carrying amber (see Patent Document 5), and the like are known.
他方、銀は殺菌性を有することから、銀イオンや金属銀微粒子を殺菌剤として用いることは知られているが、金属銀コロイドが消臭効果を有することは、これまで全く知られていなかった。 On the other hand, since silver has bactericidal properties, it is known to use silver ions or metallic silver fine particles as a bactericidal agent. However, it has never been known that metallic silver colloid has a deodorizing effect. .
本発明は、微量の使用によっても十分な消臭効果を示し、繊維材料としても広く利用することができる新規な消臭性材料を提供することを目的としてなされたものである。 The present invention has been made for the purpose of providing a novel deodorizing material that exhibits a sufficient deodorizing effect even when used in a small amount and can be widely used as a fiber material.
本発明者らは、水性媒質中、陽イオン性界面活性剤の存在下で、水溶性銀化合物を複合金属水素化物により還元することにより、粒径２０ｎｍ以下の金属銀コロイドを製造する方法を開発した。そして、その後この金属銀コロイドの利用について種々研究した結果、これが殺菌剤として有効であることを明らかにしたが、さらに研究を続けた結果、これをフィブリル化した麻繊維に担持させると、高度の消臭作用を示すことを見出し、この知見に基づいて本発明をなすに至った。 The present inventors have developed a method for producing a metallic silver colloid having a particle size of 20 nm or less by reducing a water-soluble silver compound with a composite metal hydride in an aqueous medium in the presence of a cationic surfactant. did. Then, as a result of various studies on the utilization of this metallic silver colloid, it was clarified that this was effective as a fungicide. As a result of further research, when this was supported on fibrillated hemp fibers, It has been found that it exhibits a deodorizing action, and the present invention has been made based on this finding.
すなわち、本発明は、陽イオン性界面活性剤の存在下で還元して得られる金属銀コロイドを、少なくとも０．００１質量％の割合で担持させたフィブリル化麻繊維からなる消臭性材料、陽イオン性界面活性剤を含む水性媒質中で、フィブリル化した麻繊維とその麻繊維に対し金属銀換算で少なくとも０．００１質量％の水溶性銀化合物とを接触させ、複合金属水素化物を加えて還元反応を行わせ、金属銀コロイドを生成させるとともに、これを該麻繊維と結合させることを特徴とする消臭性材料の製造方法、陽イオン性界面活性剤を含む水性媒質中で、麻繊維に対し金属銀換算で少なくとも０．００１質量％の水溶性銀化合物を複合金属水素化物で還元して金属銀コロイドを生成させたのち、これをフィブリル化した麻繊維と接触させることを特徴とする消臭性材料の製造方法、及び陽イオン性界面活性剤を含む水性媒質中で、フィブリル化した麻繊維と金属銀換算でその質量の少なくとも０．００１質量％の水溶性銀化合物を接触させたのち、複合金属水素化物を加えて還元反応を行わせ、金属銀コロイドを生成させることを特徴とする消臭性材料の製造方法を提供するものである。 That is, the present invention provides a deodorant material comprising a fibrillated hemp fiber on which a metallic silver colloid obtained by reduction in the presence of a cationic surfactant is supported in a proportion of at least 0.001% by mass, In an aqueous medium containing an ionic surfactant, fibrillated hemp fibers and the hemp fibers are contacted with at least 0.001% by mass of a water-soluble silver compound in terms of metallic silver, and a composite metal hydride is added. A method for producing a deodorant material characterized in that a metal silver colloid is produced by performing a reduction reaction, and this is combined with the hemp fiber, hemp fiber in an aqueous medium containing a cationic surfactant In contrast, at least 0.001% by mass of a water-soluble silver compound in terms of metallic silver is reduced with a composite metal hydride to form a metallic silver colloid, which is then contacted with fibrillated hemp fibers. A method for producing a deodorant material, and a water-soluble silver compound having a mass of at least 0.001% by mass of fibrillated hemp fiber and metal silver in an aqueous medium containing a cationic surfactant The present invention provides a method for producing a deodorant material characterized in that, after contact, a composite metal hydride is added to cause a reduction reaction to produce a metallic silver colloid.
本発明の消臭性材料は、麻繊維に金属銀コロイドを担持させて構成されるが、この麻繊維例えばラミーやリネンは、天然繊維の中で、繊維軸方向に対する配向度が最も高く、また結晶度も高い剛直な繊維であるため、繊維軸方向と直角の方向に機械的剪断力が加えられると簡単にフィブリル化し微細な繊維になる。そして、このフィブリル化した微細な繊維は粒子径２０ｎｍ以下の金属銀コロイドと接触すると迅速に結合し、複合化する。
上記のラミーやリネン以外の大麻、ジュート、マニラ麻及びサイザル麻も同様にフィブリル化可能であり、本発明の金属銀コロイドの担体として用いることができる。これらの麻繊維は、通常、織成又は編成した状態で用いられるが、不織布として用いてもよい。
The deodorant material of the present invention is configured by supporting metallic silver colloid on hemp fibers, but hemp fibers such as ramie and linen have the highest degree of orientation in the fiber axis direction among natural fibers, and Since it is a rigid fiber having a high degree of crystallinity, when a mechanical shearing force is applied in a direction perpendicular to the fiber axis direction, it is easily fibrillated into fine fibers. When the fibrillated fine fibers come into contact with a metallic silver colloid having a particle diameter of 20 nm or less, they are rapidly bonded and complexed.
Cannabis, jute, Manila hemp and sisal hemp other than the above ramie and linen can be similarly fibrillated, and can be used as the carrier of the metallic silver colloid of the present invention. These hemp fibers are usually used in a woven or knitted state, but may be used as a nonwoven fabric.
麻繊維のフィブリル化は、例えば織成又は編成した麻繊維の表面を粗い固体表面で摩擦しケバ立てることによって行われる。工業的にはヤスリ状の表面をもつ回転ローラー上に上記の麻繊維を接触させて連続的に通過させる方法、いわゆるエメリー加工法によって行うことができる。また織布や編布の両面をフィブリル化しようとするときは、ヤスリ面を有する２本のローラーを備えたエメリー加工機のローラーの間を通過させる。 The fibrillation of the hemp fibers is carried out, for example, by rubbing the surface of the woven or knitted hemp fibers with a rough solid surface. Industrially, it can be carried out by a so-called emery processing method in which the above-mentioned hemp fibers are continuously brought into contact with a rotating roller having a file-like surface. Moreover, when trying to fibrillate both surfaces of a woven fabric or a knitted fabric, it passes between the rollers of the emery processing machine provided with the two rollers which have a file surface.
本発明の消臭性材料は、このようにしてフィブリル化した麻繊維に金属銀コロイドを担持させたものであるが、この金属銀コロイドとしては、粒径２０ｎｍ以下、好ましくは１０ｎｍ以下のものが用いられる。この金属銀コロイドは、麻繊維に対し、少なくとも０．００１質量％、好ましくは０．００５〜１０質量％の割合で担持させる必要がある。この割合が０．００１質量未満では十分な消臭力を付与することができない。 The deodorant material of the present invention is one in which metallic silver colloid is supported on the fibrillated hemp fiber, and the metallic silver colloid has a particle diameter of 20 nm or less, preferably 10 nm or less. Used. This metallic silver colloid needs to be supported at a rate of at least 0.001% by mass, preferably 0.005 to 10% by mass with respect to the hemp fibers. If this ratio is less than 0.001 mass, sufficient deodorizing power cannot be imparted.
この麻繊維に金属銀コロイドが多量に結合すると、黄褐色に着色するので、染色しないで用いる場合には、この割合を低くして、できるだけ着色が目立たないようにするのがよい。また、この割合が１０．０質量％を超えると結合力が低下して、消臭力が不安定になるので好ましくない。 If a large amount of metallic silver colloid is bound to this hemp fiber, it will turn yellowish brown. Therefore, when it is used without being dyed, it is preferable to reduce this ratio so that the coloring is not as conspicuous as possible. On the other hand, if this ratio exceeds 10.0% by mass, the bonding strength is lowered, and the deodorizing power becomes unstable.
本発明の消臭性材料は、例えばフィブリル化麻繊維を、陽イオン性界面活性剤含有水性媒質に溶解した水溶性銀化合物と接触させながら、還元処理して金属銀コロイドを生成させるとともに、これをフィブリル化麻繊維に結合させることによって製造することができる。
この際の水性媒質としては水が一般的であるが、所望ならば水と水混和性有機溶剤例えばメチルアルコール又はエチルアルコールとの混合溶媒を用いることもできる。
The deodorant material according to the present invention, for example, reduces the fibrillated hemp fiber while bringing it into contact with a water-soluble silver compound dissolved in an aqueous medium containing a cationic surfactant to produce a metallic silver colloid. Can be produced by bonding to a fibrillated hemp fiber.
In this case, water is generally used as the aqueous medium, but if desired, a mixed solvent of water and a water-miscible organic solvent such as methyl alcohol or ethyl alcohol can also be used.
次に、この水性媒質中に含有させる陽イオン性界面活性剤としては、長鎖アルキルアミン塩、例えばステアリルアミン塩化水素塩、オレイルアミン塩化水素塩、長鎖カルボン酸とアミンとの縮合物、例えばヤシ油脂肪酸とジエタノールアミンとの縮合物、長鎖アルキル第四級アンモニウム塩、例えばセチルトリメチルアンモニウムクロリド、ステアリルトリメチルアンモニウムブロミドなどがある。この場合、炭素数１２以上のアルキル基をもつ長鎖アルキル第四級アンモニウム塩を用いると消臭力が向上するので有利である。
この陽イオン性界面活性剤は銀１００質量部当り５０〜２０００質量部、好ましくは１００〜１５００質量部の範囲で用いられる。
Next, as the cationic surfactant to be contained in the aqueous medium, long chain alkylamine salts such as stearylamine hydrochloride, oleylamine hydrochloride, condensates of long chain carboxylic acids and amines such as palm Examples include condensates of oil fatty acids and diethanolamine, and long-chain alkyl quaternary ammonium salts such as cetyltrimethylammonium chloride and stearyltrimethylammonium bromide. In this case, it is advantageous to use a long-chain alkyl quaternary ammonium salt having an alkyl group having 12 or more carbon atoms because the deodorizing power is improved.
This cationic surfactant is used in the range of 50 to 2000 parts by mass, preferably 100 to 1500 parts by mass per 100 parts by mass of silver.
本発明の消臭性材料には、所望に応じさらに消臭力を強化するために、他の消臭成分として銅イオンを含ませることができる。銅イオン含有量は、消臭性材料１００質量部当り１質量部以下にすることが望ましい。 The deodorant material of the present invention can contain copper ions as other deodorant components in order to further enhance the deodorant power as desired. The copper ion content is desirably 1 part by mass or less per 100 parts by mass of the deodorant material.
本発明によれば、消臭性材料は以下の３方法のいずれかによって製造することができる。
（１）陽イオン性界面活性剤を含む水性媒質水で、フィブリル化した麻繊維とその麻繊維に対し金属銀換算で少なくとも０．００１質量％の水溶性銀化合物とを接触させ、複合金属水素化物を加えて還元反応を行わせ、金属銀コロイドを生成させるとともに、これを該麻繊維と結合させる。
（２）陽イオン性界面活性剤を含む水性媒質中で、麻繊維に対し金属銀換算で少なくとも０．００１質量％の水溶性銀化合物を複合金属水素化物で還元して金属銀コロイドを生成させたのち、これをフィブリル化した麻繊維と接触させ、これと結合させる。
（３）陽イオン性界面活性剤を含む水性媒質中で、フィブリル化した麻繊維と金属銀換算でその質量の少なくとも０．００１質量％の水溶性銀化合物を接触させたのち、複合金属水素化物を加えて還元反応を行わせて金属銀コロイドを生成させると同時に麻繊維に結合させる。
According to the present invention, the deodorant material can be produced by any of the following three methods.
(1) An aqueous medium water containing a cationic surfactant, bringing the fibrillated hemp fiber and the hemp fiber into contact with at least 0.001% by mass of a water-soluble silver compound in terms of metallic silver, and composite metal hydrogen A reduction reaction is performed by adding a chemical compound to form a metallic silver colloid and bind this to the hemp fiber.
(2) In an aqueous medium containing a cationic surfactant, a metallic silver colloid is produced by reducing at least 0.001% by mass of a water-soluble silver compound in terms of metallic silver with a composite metal hydride to hemp fibers. This is then brought into contact with and bonded to fibrillated hemp fibers.
(3) In a water-based medium containing a cationic surfactant, a fibrillated hemp fiber is contacted with a water-soluble silver compound having a mass of at least 0.001% by mass in terms of metallic silver, and then a composite metal hydride. Is added to form a metallic silver colloid and simultaneously bind to the hemp fiber.
この際に用いる水溶性銀化合物としては、例えば硝酸銀ＡｇＮＯ3、亜硝酸銀ＡｇＮＯ2、塩素酸銀ＡｇＣｌＯ3、過塩素酸銀ＡｇＣｌＯ4、酢酸銀Ａｇ（ＣＨ3ＣＯ2）2、硫酸銀Ａｇ2ＳＯ4などを挙げることができる。そのほかジアンモノ銀クロリド［Ａｇ（ＮＨ3）2］Ｃｌのような錯塩も用いることができる。これらの水溶性銀化合物は、０．０５〜５ｍＭ、好ましくは０．１〜２ｍＭの範囲の濃度で水に溶かし、水溶液として用いられる。 Examples of water-soluble silver compounds used in this case include silver nitrate AgNO 3 , silver nitrite AgNO 2 , silver chlorate AgClO 3 , silver perchlorate AgClO 4 , silver acetate Ag (CH 3 CO 2 ) 2 , silver sulfate Ag 2 SO 4 etc. can be mentioned. In addition, complex salts such as dianmonosilver chloride [Ag (NH 3 ) 2 ] Cl can also be used. These water-soluble silver compounds are dissolved in water at a concentration in the range of 0.05 to 5 mM, preferably 0.1 to 2 mM, and used as an aqueous solution.
次に、この水溶性銀化合物の水溶液に添加される複合金属水素化物としては、例えば水素化ホウ素ナトリウムＮａＢＨ4、水素化ホウ素カリウムＫＢＨ4、水素化アルミニウムリチウムＬｉＡｌＨ4など各種化学反応で還元剤として慣用されているものを用いることができる。これらは、水溶性銀化合物に基づき、２〜５０倍モル量の範囲で用いられる。これよりも少ない量では銀の還元が不十分になるし、またこれよりも多い量では後処理が厄介である。 Next, as the composite metal hydride added to the aqueous solution of the water-soluble silver compound, for example, as a reducing agent in various chemical reactions such as sodium borohydride NaBH 4 , potassium borohydride KBH 4 , lithium aluminum hydride LiAlH 4, etc. A commonly used one can be used. These are used in a range of 2 to 50 times the molar amount based on the water-soluble silver compound. Smaller amounts result in insufficient silver reduction, and higher amounts are cumbersome to work up.
この方法を好適に行うには、先ず前記の水溶性銀化合物の水溶液に陽イオン性界面活性剤及び複合金属水素化物を加えて反応させることにより、金属銀コロイド含有液を生成させる。この反応は室温下、例えば２０℃で十分進行するが、所望ならば３０〜６０℃に加熱して反応促進することもできる。反応時間は使用する各成分の種類や条件により変わるが、通常は５〜３０分の範囲である。反応が完了すると粒径１０ｎｍ以下の金属銀コロイドを含む淡黄色ないし暗褐色の金属銀コロイド含有液が得られる。 In order to suitably perform this method, a metallic silver colloid-containing liquid is first produced by adding a cationic surfactant and a complex metal hydride to the aqueous solution of the water-soluble silver compound and reacting them. This reaction proceeds satisfactorily at room temperature, for example, at 20 ° C., but if desired, the reaction can be accelerated by heating to 30 to 60 ° C. The reaction time varies depending on the type and conditions of each component used, but is usually in the range of 5 to 30 minutes. When the reaction is completed, a light yellow to dark brown metal silver colloid-containing liquid containing a metal silver colloid having a particle size of 10 nm or less is obtained.
次に、この金属銀コロイド含有液にフィブリル化した麻繊維を浸漬し、５〜２０分間軽くかき混ぜると、金属銀コロイド粒子がこれに結合し、液は無色になると同時にフィブリル化した麻繊維材料は黄色ないし黄褐色に着色する。そして銀コロイドが完全にフィブリル化した麻繊維に結合したか否かは、例えば処理液中の銀の原子吸光スペクトルを測定することによって確認することができる。 Next, when the fibrillated hemp fibers are immersed in this metallic silver colloid-containing liquid and lightly stirred for 5 to 20 minutes, the metallic silver colloid particles are bonded to this, and the liquid becomes colorless and simultaneously the fibrillated hemp fiber material is Colored yellow to tan. Whether or not the silver colloid is bound to the completely fibrillated hemp fiber can be confirmed, for example, by measuring an atomic absorption spectrum of silver in the treatment liquid.
本発明によれば、極めて少ない量の金属銀コロイドを用いて強力な消臭力を示す消臭性材料を得ることができる。 According to the present invention, a deodorant material exhibiting a strong deodorizing power can be obtained using an extremely small amount of metallic silver colloid.
次に、実施例により、本発明を実施するための最良の形態を説明する。なお、各例における消臭力は以下の試験方法により求めた。
消臭力試験法；
図１に示す頂部に試料懸吊具１を備え、ガス注入及びガス取出用管口２を設け、磁気撹拌翼３を底部に配置した３．５リットル内体積のガラス製デシケータ４を用い、試料懸吊具１に既知質量の短冊状の試料を取り付け、管口２より注射器により、既知濃度の悪臭ガス成分を含むガスを注入し試料と接触させたのち、所定時間経過後、管口２よりガスピペットによりガスを取り出し、ガス検知管により悪臭ガス成分の濃度を測定する。なお、上記の試料はいずれも４０℃において６時間乾燥し、室温まで冷却して用いた。
Next, the best mode for carrying out the present invention will be described by way of examples. In addition, the deodorizing power in each case was calculated | required with the following test methods.
Deodorant test method;
A sample suspender 1 is provided at the top shown in FIG. 1, a gas inlet / outlet port 2 is provided, and a glass desiccator 4 having a volume of 3.5 liters and a magnetic stirring blade 3 disposed at the bottom is used. A strip-shaped sample having a known mass is attached to the suspender 1, and a gas containing a malodorous gas component of a known concentration is injected from the tube port 2 by a syringe and brought into contact with the sample. The gas is extracted with a gas pipette and the concentration of malodorous gas components is measured with a gas detector tube. All the above samples were dried at 40 ° C. for 6 hours and cooled to room temperature.
２０ｍＭ−硝酸銀水溶液２．５ｍｌを脱イオン水９１．５ｍｌで希釈したのち、室温下１質量％濃度のステアリルトリメチルアンモニウムクロリド水溶液１．０ｍｌ及び４０ｍＭ水素化ホウ素ナトリウム水溶液５．０ｍｌをかき混ぜながら順々に加え、１０分間室温で反応させることにより黄色透明な金属銀コロイド含有液（コロイド粒径１２ｎｍ）１００ｍｌを調製した。 After diluting 2.5 ml of 20 mM-silver nitrate aqueous solution with 91.5 ml of deionized water, 1.0 ml of 1% strength by weight stearyltrimethylammonium chloride aqueous solution and 5.0 ml of 40 mM sodium borohydride aqueous solution were sequentially stirred at room temperature. In addition, by reacting at room temperature for 10 minutes, 100 ml of a yellow transparent metallic silver colloid-containing liquid (colloid particle size 12 nm) was prepared.
次にラミー５０質量％、リネン５０質量％の２５番手の混紡糸を麻織機にかけ、経糸４２本、緯糸４０本で２６０ｇ／ｍ2の織布を得る。この織布を１本の起毛ローラーを備えた１段エメリー加工機を通し、片面がフィブリル化した麻織布を得た。このようにして得たフィブリル化した麻繊維の３０倍拡大顕微鏡写真を図２に示す。また比較のため未加工の麻繊維の同じ倍率の顕微鏡写真を図３に示す。 Next, 25th blended yarn of 50% by mass of ramie and 50% by mass of linen is applied to a hemp loom to obtain a woven fabric of 260 g / m 2 with 42 warps and 40 wefts. This woven fabric was passed through a one-stage emery processing machine equipped with one raised roller to obtain a woven fabric with one side fibrillated. A 30-fold magnified photomicrograph of the fibrillated hemp fibers thus obtained is shown in FIG. For comparison, a micrograph of the same magnification of raw hemp fiber is shown in FIG.
この麻織布から３０ｇの試料を切り取り、１３４ｍｌの脱イオン水に１０分間浸漬し、次いで上記金属銀コロイド含有液３００ｍｌを加え、室温で１０分間軽く振とうさせることにより、銀コロイドを麻繊維に吸着させ、次いで取り出し、２回水洗後、風乾することにより銀コロイドを担持した片面がフィブリル化した麻繊維織物を得た。
麻繊維織物の金属銀コロイドの担持量は０．０５質量％であった。
A 30 g sample is cut from this linen cloth, immersed in 134 ml of deionized water for 10 minutes, then added with 300 ml of the above metallic silver colloid-containing solution, and lightly shaken at room temperature for 10 minutes, whereby silver colloid is applied to the hemp fiber. Adsorbed, then taken out, washed twice with water, and then air-dried to obtain a hemp fiber woven fabric on one side carrying silver colloid.
The amount of metallic silver colloid supported on the hemp fiber fabric was 0.05% by mass.
ラミー５０質量％、リネン５０質量％の２５番手の混紡糸を麻織機にかけ、経糸４２本、緯糸４０本で２６０ｇ／ｍ2の織布を得る。次いで、この織布を２本の起毛ローラーを備えた２段エメリー加工機を通し、両面がフィブリル化した麻織布を得る。 A 25th blended yarn of 50% by mass of ramie and 50% by mass of linen is applied to a linen loom to obtain a woven fabric of 260 g / m 2 with 42 warps and 40 wefts. Next, the woven fabric is passed through a two-stage emery processing machine equipped with two raised rollers to obtain a woven fabric with both sides fibrillated.
この麻織布から３０ｇの試料を切り取り、１３４ｇの脱イオン水に１０分間浸漬し、次いで実施例１で調製した金属銀コロイド含有液３００ｍｌを加え、室温で１０分間軽く振とうさせることにより金属銀コロイドを担持した淡褐色の麻織布を得た。この麻織布の金属銀コロイド担持量は０．０５質量％であった。 A 30 g sample was cut from this hemp cloth, immersed in 134 g of deionized water for 10 minutes, then added with 300 ml of the metallic silver colloid-containing solution prepared in Example 1, and lightly shaken at room temperature for 10 minutes to form metallic silver. A light brown linen cloth carrying a colloid was obtained. The amount of colloidal metal silver supported on this linen fabric was 0.05% by mass.
参考例
悪臭の代表的なガスとして、アンモニアガス、トリメチルアミンガス、硫化水素ガス及びホルムアルデヒドガスの４種をそれぞれ濃度１００ｐｐｍ、３０ｐｐｍ、２０ｐｐｍ及び１０ｐｐｍで含むガスを用い、実施例１及び２で得た消臭性材料について消臭力を試験した。その結果を表１に示す。なお、比較のために表１には金属銀コロイドを担持しないフィブリル化麻繊維について試験した結果を対照として併記した。
Reference Example As a typical gas of bad odor, gases containing four kinds of ammonia gas, trimethylamine gas, hydrogen sulfide gas and formaldehyde gas at concentrations of 100 ppm, 30 ppm, 20 ppm and 10 ppm, respectively, were used. The deodorizing power of the odorous material was tested. The results are shown in Table 1. For comparison, Table 1 also shows the results of testing fibrillated hemp fibers not carrying metallic silver colloids as a control.
この表から分るように、麻繊維をフィブリル化しただけでも（対照）、繊維が一時的に活性化され、かつ吸着面積が大きくなるので、初期にはガス濃度は減少するが、これは単に麻繊維表面への吸着のみのため、一定時間経過すると平衡に達し活性を失う。
これに対し、本発明の消臭性材料は減少速度が明らかに対照よりも大きく、また速度低下は認められない。これは、いったん吸着した悪臭ガスが金属銀コロイドとの間で化学反応を起しているためである。また実施例２で得た消臭性材料は両面をフィブリル化した麻繊維を用いているため片面のみをフィブリル化した麻繊維を用いた実施例１の約２倍の消臭力を示す。
As can be seen from this table, the fibrillation of the hemp fiber (control) only temporarily activates the fiber and increases the adsorption area, so the gas concentration decreases initially, but this is simply Because it is only adsorbed on the surface of the hemp fiber, it reaches equilibrium after a certain time and loses its activity.
In contrast, the deodorant material of the present invention has a rate of decrease that is clearly greater than that of the control, and no rate decrease is observed. This is because the malodorous gas once adsorbed causes a chemical reaction with the metallic silver colloid. Moreover, since the deodorizing material obtained in Example 2 uses hemp fibers fibrillated on both sides, the deodorizing power is about twice that of Example 1 using hemp fibers fibrillated on only one side.
本発明の消臭性材料は、カーテン、寝具カバー、フィルター、椅子カバーなどとして各種の悪臭除去に用いることができる。 The deodorant material of the present invention can be used for removing various malodors as a curtain, bedding cover, filter, chair cover and the like.
１ 試料懸吊具
２ ガス注入及びガス取出用管口
３ 磁気撹拌翼
４ ガラス製デシケータ
DESCRIPTION OF SYMBOLS 1 Sample suspension 2 Gas injection and gas extraction pipe port 3 Magnetic stirring blade 4 Glass desiccator
Claims (7)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006087822A (en) * | 2004-09-27 | 2006-04-06 | Fuairudo Kk | Method for preventing sick building syndrome, and its product |
| JP2009270208A (en) * | 2008-05-01 | 2009-11-19 | Ohara Palladium Kagaku Kk | Antibacterial deodorant processing agent for fiber and textile product processed with the processing agent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006087822A (en) * | 2004-09-27 | 2006-04-06 | Fuairudo Kk | Method for preventing sick building syndrome, and its product |
| JP2009270208A (en) * | 2008-05-01 | 2009-11-19 | Ohara Palladium Kagaku Kk | Antibacterial deodorant processing agent for fiber and textile product processed with the processing agent |
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