JPH02160972A - Fibers containing ceramics including antimicrobial solid-solubilized - Google Patents

Abstract

PURPOSE:To obtain the title fibers eradicating microorganisms proliferating in fiber products or preventing their generation without adverse effect on the fiber characteristics by allowing ceramic fine particles to include antimicrobial agents in the pores and solid-dissolving the ceramic fine particles in the fine pores of fibers. CONSTITUTION:Naturally occurring animal or vegetable fibers or synthetic fibers such as cotton fibers having fine pores are swollen with an alkaline solution and the fine pores are filled with porous silicon ceramic fine particles, then the fibers are dipped in a solution containing antimicrobials such as quaternary ammonium salts, organic nitrogen compounds, chitosan acetate or the like so that the ceramic is impregnated with the microbials whereby the fibers containing ceramics containing antimicrobials solid solubilized are obtained for sanitary purposes.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a solid-dissolved antibacterial agent that can kill or prevent the growth of microorganisms that propagate in textile products and maintain a sanitary clothing environment. The present invention relates to a ceramic-containing fiber and a method for producing the same.

[Prior art and problems to be solved by the invention] Microorganisms that breed on textile products grow rapidly, especially in high temperature and humid environments, and underwear that is in close contact with the human body must be dried to prevent the growth of the microorganisms mentioned above. You need to use clean ones.

Particularly in the summer, in a humid environment due to internal sweating, in order to encourage the growth of the microorganisms mentioned above, we remove the bad odor caused by sweating, reduce the growth of microorganisms, and use fibers that can be sterilized. has been desired for a long time.

In order to meet this demand, conventional methods have been to apply antibacterial agents to the fiber surface by cross-linking them with fiber-reactive resins or by utilizing ionic or covalent bonds using the ionic properties of the fiber surface. was maintained.

Alternatively, since metals such as copper are highly toxic to certain microorganisms and organisms, or exhibit excellent antibacterial effects, twisted metal fibers made of copper or the like may be twisted so as to be wrapped in single fibers. There was a thread. The twisted fibers are metal fibers with a predetermined wire diameter.

The metal fibers are twisted together during the twisting process so as to have a predetermined weight ratio of the metal fibers to the mother fibers, and the antibacterial effects, etc., differ depending on the predetermined hand of the mother fibers and the wire diameter of the metal fibers. It was known to become a thing.

However, with conventional fibers containing antibacterial agents, the surface of natural animal or vegetable fibers is coated with antibacterial agents, which significantly impairs the characteristics of the fibers themselves, such as their inherent hygroscopicity and water release properties. .

Furthermore, in addition to the complicated process of manufacturing metal fibers of a predetermined wire diameter and the process of twisting the metal fibers into a mother fiber after this process, the antibacterial effect of plied fibers can only be achieved with a specified thread count. However, it was not possible to provide versatility in the use of skin V-necks manufactured using this fiber.

[Failure to solve the problem]

The present invention was made in view of the above problems, and utilizes the porosity of porous ceramic fine particles to inject an antibacterial agent into the porous pores without impairing the original properties of fibers. For impregnation, ceramic fine particles are immersed together with the fibers in a predetermined heated and pressurized treatment solution, the ceramic fine particles are injected into the fine holes of the swollen fibers, and then the antibacterial agent is poured into the ceramic fine holes. The present invention provides a ceramic-containing fiber impregnated with an antibacterial agent as a solid solution, and a method for producing the same.

That is, the present invention provides hygroscopicity and moisture wicking properties to the original fiber itself by dissolving porous ceramic in the single fiber, and keeps the fiber itself in a dry state at all times, thereby preventing microorganisms and pests. It is possible to eliminate the humid conditions that promote the occurrence.

At the same time, by impregnating the inside of the ceramic with an antibacterial agent, it prevents the adhesion and propagation of microorganisms, and prevents skin disorders and diseases that induce inflammation on the skin surface, which causes a stuffy feeling and bad odor.

This will kill or prevent the growth of microorganisms that grow on clothing, bedding, etc. on the skin surface, carpets in indoor environments, textile products used in humid conditions such as bathrooms, and improve hygiene. Able to maintain clothing and living environment.

The present invention provides a fiber that has a synergistic effect of removing the environment in which microorganisms are likely to occur and, in addition, sterilizing the microorganisms that occur.

〔Example〕

An embodiment of the present invention will be described in detail below.

The mother fiber used in the present invention may be any of animal fiber, vegetable fiber, and synthetic fiber, and as an embodiment of the present invention, cotton fiber among vegetable fibers will be mainly described. Cotton fiber has vacuoles in its cross section, which improves heat retention and feel, and the twist of the single fibers strengthens the intertwining of the single fibers. Therefore, in cotton fiber, the crystallites of the single fibers are arranged in a spiral along the long axis of the fiber, and fine pores are formed in a meandering shape.

The present invention makes use of the above-mentioned characteristics, and the micropores present as the amorphous regions among the crystalline regions in which the crystallites constituting the single fiber are regularly arranged and the irregularly arranged amorphous regions. Ceramic fine particles are dissolved in solid solution, and then an antibacterial agent is impregnated.

That is, for example, porous silicon ceramic fine particles having a particle size of 1 mm to 6 mm are mixed in a treatment solution containing a non-surfactant, or a predetermined amount of a divalent metal salt is mixed therein, and the mixture is heated and pressurized. When a single fiber is soaked for a specified time,
The hole diameter swells to 4 to 10 millimeters and is filled with ceramic fine particles and metal salts having an average particle diameter of about 6 millimeters used in the present invention. Next, a quaternary ammonium salt having antibacterial properties, an organic nitrogen-based compound, shrimp, which can be collected in abundance in nature, are added to the pores of the ceramic fine particles.
The acetate or crosslinked molecules of chitosan, which has an antibacterial effect and is extracted from crustaceans such as crabs and insects, are impregnated with a heat treatment liquid.

When the fibers are left in a steady environment after being washed with water, the swollen micropores contract and firmly block the ceramic particles.

The thus obtained ceramic fiber containing the antibacterial agent is sewn into, for example, underwear that surrounds the inside of the human body and has a sweating effect.

At this time, the fibers may be used for the entire underwear, or may be sewn into the portion corresponding to the microorganism growth area. Since these underwear contain ceramics with high porosity as a solid solution, they easily absorb moisture sweated from the body due to the capillary phenomenon of these pores, and after the ceramics interposed inside the micropores absorb moisture, It reacts with the antibacterial agent impregnated into the pores and has an antibacterial effect against microorganisms.

Examples of such compounds include quaternary ammonium salts, salts, and organic nitrogen compounds that do not undergo toxic changes in the natural environment. Alternatively, chitosan acetate or cross-linked molecules extracted from insects and crustaceans such as shrimp and crabs, which are abundantly collected in nature, may be used.

Furthermore, a metal salt having antibacterial properties (for example, a divalent metal salt magnesium sulfate is adsorbed onto the ceramic and fibers, and then chitosan is chelate-bonded to the adsorbed metal salt) is used.

It should be noted that the present invention describes one embodiment, and a non-toxic antibacterial agent that inherently has an antibacterial effect may be solid-dissolved in the micropores of fibers containing porous ceramics. It is used for underwear, nightwear, shirts, and carpets.

[Example 1] First step: Cotton fibers were mixed with a 1 g/l solution of caustic soda at a bath ratio of 1:10, and ceramics with an average particle size of 6 mm were added to the treatment solution at a rate of 2% based on the weight to be treated, in a closed container. 4~6kg/e
++f After treatment at 90 to 110° C. for 30 minutes under pressure, washing with water and drying is performed.

Second step: Dissolve low molecular weight chitosan with a molecular weight of 3.000 to 6.000 in a 5% acetic acid solution with stirring to add 2% to the weight of the fiber to be treated.
was added to a treatment bath prepared at a bath ratio of 1:15, and the liquid temperature was 15 to 4.
After treatment at 0°C for 30 minutes, dehydration and drying are performed.

As an antibacterial test, E. coli, a Durham-negative bacterium, was killed in 8 hours by the seek flask method.

[Example 2] The first step is the same as Example 1. Second step: 50 c in a solution containing an organic solvent (benzene) and an emulsifier.
5 g of low-molecular-weight chitosan and 2 g of triisocyanate were mixed in a ratio of 5 g, and stirred with a homogenizer to form a turbid liquid. This turbid liquid was added in an amount of 3% based on the weight of the specific product to be treated, and the same treatment as in Example 1 was carried out.

According to the seek flask antibacterial test, Staphylococcus aureus and Bacillus subtilis, which are Durham-positive bacteria, were killed in 7 hours.

[Example 3] Magnesium sulfate was added to the treatment bath in the first step of Example 1.
Add so that it becomes g/l.

In the second step, the same antibacterial test as in the second step of Example 1 gave the same results as in Example 1.

〔Effect of the invention〕

As explained above, according to the ceramic-containing fiber containing an antibacterial agent as a solid solution and the manufacturing method thereof of the present invention, the ceramic is dissolved in the micropores of the fiber, and then the antibacterial agent having antibacterial properties is contained in the ceramic pores. The hygroscopic properties of porous ceramics are added to this without impairing the original properties of the fibers, and the ceramics are solid-dissolved with an antibacterial agent that imparts an antibacterial effect through this hygroscopic action. A fiber containing the same and a method for producing the same can be provided.

Claims (5)

[Claims] (1) Contains fibers, micropores in the fibers, and swollen ceramic microparticles smaller than the diameter of the pores, and the pores of the ceramic microparticles are impregnated with an antibacterial agent. A ceramic-containing fiber with a characteristic antibacterial agent dissolved in it. (2) The ceramic-containing fiber containing an antibacterial agent as a solid solution according to claim 1, wherein the fiber is a vegetable fiber, an animal fiber, or a synthetic fiber. (3) The ceramic-containing fiber containing an antibacterial agent as a solid solution according to claim 1, wherein the antibacterial agent is a quaternary ammonium salt, an organic nitrogen compound, an acetate of chitosan, or a crosslinked molecule of chitosan. (4) The ceramic-containing fiber containing an antibacterial agent as a solid solution according to claim 1, wherein the antibacterial agent is a divalent metal salt. (5) After the fibers are swollen with an organic solvent or an aqueous solvent, the fibers are immersed in a treated aqueous solution containing fine ceramic particles, and the immersed treatment solution is heated and pressurized to form expanded fibers. An antibacterial method characterized by injecting the ceramic fine particles into the holes, then immersing the fibers containing the ceramic fine particles as a solid solution in a treatment solution containing an antibacterial agent, heating the immersed treatment solution, and dehydrating and drying. A method for manufacturing a ceramic-containing fiber containing a solid solution of an agent.