Anti-microbial cellulosic fibrous material

 

(57) Abstract:

Anti-microbial cellulosic fibrous material. Use: in various fields of national economy in the manufacture of antimicrobial spectralogic, bed linen and clothing. The inventive antimicrobial material comprises chemically treated flax fiber and contains 3 to 15 wt. % drug iteron from a mixture of complex compounds polyvinylpyrrolidone (mol.m. 20000 - 30000 and iodine with potassium iodide. Material are impregnated linen canvas in 5 - 25% aqueous solution of iteron when module 1 bath:40-50 and a temperature of 20 - 60C for 5 to 10 minutes, wringing with the level of 60 - 70% and dried at 80 - 100C until the moisture content of 3 to 5%. Antimicrobial activity of a material according to the method of the infected agar against Staphylococcus 14 - 22 mm, the rigidity of the material in bending 600-620 MKSM2the material has a soft feel (touch), similar to the material from cotton fiber. After five washings, the material contains 42% of the drug iteron from its original content, and after ten washings - 20%. table 1.

The invention relates to textile production, namely antimicrobial fibrous materials that can be used is, the hope.

Known anti-microbial cellulosic fibrous material impregnated with a composition containing a synthetic rubber SCTN based on low molecular weight polydimethylsiloxane, curing catalyst TO-10C on the basis of methyltriacetoxysilane in the amount of 5% by weight of the rubber, as the organic solvent carbon tetrachloride [1].

The disadvantage of this material is the use of components of non-traditional chemical synthesis, as well as all finishing compositions contain an organic solvent, in particular chetyrehhloristy the carbon in an amount up to 1 wt.% remains in the modified product.

Known antimicrobial material, made of cotton gauze, modified graft copolymer of low molecular weight polydimethylsiloxanes links mol. m 24000-51000, 2,0-20,0; hardener - methyltriacetoxysilane 0,4-4,0%; iodine 0.2 to 7.0 percent, the organic solvent is carbon tetrachloride-rest [2].

Technology of production of known antimicrobial material is quite complex and the properties remain at the level of the known materials of the same purposes, and is also used toxic organic solvent.

However, the antimicrobial activity of these materials is not high enough.

Known use as an antimicrobial agent in iodoform complex compounds of iodine with solvents and polymeric carriers [5].

However, the technology for producing such antimicrobial materials difficult.

The closest in technical essence to the invention is anti-microbial cellulosic fibrous material (cotton gauze), modified graft polymer - sulfhydrate vinylidenechloride (PBATP) - 5.7% and containing 8.6% of iodine [4].

However, the known material, the modified grafted polymer degrades environmental safety, besides the cost of the material itself due to the high cost of its production technology.

The purpose of the invention is the enhancement of antimicrobial activity while maintaining the carcass material.

This goal is achieved by known anti-microbial cellulosic fibrous material containing a fixed antimicrobial agent on the basis of iodine, and according to the invention it is made from flax fibers, and as antimicrobial agent includes preparation is e 3-15% by weight of the material.

Preparation iteron has high antibacterial activity against various microogranisms. It is used as an antiseptic.

The proposed antimicrobial fibrous material prepared according to the following technology.

As the material for the fibrous basis using woven or non-woven fabrics of flax fiber.

Preparation iteron are a mixture of a complex of polyvinylpyrrolidone-iodine (mol.m. 20000 to 30,000 with potassium iodide and contains 6-8% active iodine.

Material made from flax fiber, refined technological mode of boiling Rove on the devices of type AAA.

The successive stages of processing and the composition of solutions:

1. The degumming - soda ash to 7.0-18.0 g/l;

sodium bisulfite and 0.2-0.8 g/l;

sodium silicate 0.6 to 2.0 g/l;

the nonionic wetting agent of the type of 0.20-0.45 g/l;

alkalinity, counting on caustic soda 3,3-8.0 g/l;

2. Washing-solution of sodium tripolyphosphate 0.6 to 1.1 g/l for 15 min at a temperature of 65-70aboutC.

- hot water for 10 minutes at a temperature of 65-70aboutC.

3. Acidification - acetic acid 0.7 to 1.1 g/l for 10 min at a temperature of 45-50aboutC.

4. PR is 5% aqueous solution of iteron.

Then in the resulting aqueous solution is placed the required amount of base material, impregnated at a temperature of 20-60aboutC for 5-10 min, the module impregnation 1: 40-50. Then press material on rolls up to 60-70% of body weight, dried at a temperature of 80-100aboutWith to a moisture content of 3-5%.

P R I m e R 1. Prepare a 5% solution of iteron, which is impregnated with 1 m2linen canvas with pod bath 1:50. Then the canvas press on rollers to a residual weight gain 60% and dried at 40aboutC for 2 h

On the similar technology made samples according to examples 2-3, shown in the table.

P R I m e R 4 (ed. St. N 1513959). Cotton gauze that is modified by grafting-alpherafinancialservices (PLATM), process management 20% aqueous solution, then wring out to gain 95% , dried, and then treated with 10% aqueous solution of hydrogen peroxide when the module baths 40:1 for 5 min, press again to gain 95% and dried.

Modes of production and properties of the material according to examples 1-4 are presented in the table.

Testing of antimicrobial activity of the material carried out by the method of "Infected agar on a standard strain of Staphylococcus 209, determining the i.i.d. data table follows, what antimicrobial activity of the proposed material has increased from 14 to 22 mm at the concentration of active substance in material 0,03-0,15% instead of 8.6% prototype. Moreover, the material acquires a carcass characteristic of the cotton fiber, the rigidity they are essentially the same, which is important for the manufacture of bed linen and clothing.

Anti-microbial CELLULOSIC FIBROUS MATERIAL containing a fixed antimicrobial agent on the basis of iodine, characterized in that it is made from flax fibers, and as an antimicrobial agent contains the drug iteron from a mixture of complex compounds of polyvinylpyrrolidone and iodine with potassium iodide in an amount of 3 to 15% by weight of the material.

 

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