Antibacterial hygiene finishing is the treatment of fabrics (natural fibers, chemical fibers and blended fabrics thereof) with antibacterial deodorants or bacteriostatic agents to obtain antibacterial, mildewproof, deodorant, and clean and hygienic textile processing techniques. The purpose is not only to prevent the fabric from being damaged by microbial contamination, but more importantly, to prevent infectious diseases, to ensure the safety and health of the human body and to wear comfortably, to reduce the cross-infection rate of the public environment, and to obtain a new function of the health care of the fabric.

Fabrics made of antibacterial hygiene finishing fibers can be widely used in people's underwear, pajamas, sportswear, socks, shoe linings, baby diapers; hospitals, hotels, family sheets, quilts, blankets, napkins, towels, sofa fabrics, Curtain fabrics, carpets, medical, food, service industry uniforms, military clothing and bandages, gauze, etc., have significant social benefits.

one. Fabric hygiene microbiology

Hygiene microbiology is derived from the development of preventive medicine. It is a discipline that studies the relationship between microbes and the external environment, and how it affects human health and eliminates its harm. Microbial ecology is an important part of it. We can refer to fabric-related hygienic microbiology as fabric hygiene microbiology.

Humans are closely related to microorganisms. Microorganisms give us a lot of benefits. On the other hand, microorganisms are immersed in the human body, which may cause serious harm to health. The microorganisms mentioned here are mainly bacteria, fungi and molds that can adversely affect the human body.

1. Skin, fabric and microbial ecology

The human body carries countless microorganisms under normal conditions. For example, there are more than 106 bacteria attached to both hands, and the microorganisms present on the human scalp are about 1.4×107/cm 2 , and the microorganisms on the upper body skin are about 50-5000. /cm2, the number of viable bacteria in 1 gram of feces can reach 109-1011, which shows that there will be more microorganisms on the lower body skin of the human body.

The microbial distribution in patients is shown in Table I:

Table I Distribution of 1461 microorganisms isolated from infected patients

Microorganism causing infection

Quantity

percentage(%)

Gram-negative bacteria

E.coli

331

22.7

Pseudomonas

106

7.2

Salmonella - Shigella

7

0.5

Other Gram-negative bacteria

355

24.3

Gram-positive bacteria

Staphylococcus aureus

282

19.3

Streptococcus group A

25

1.7

Other bacteria

355

24.3

It can be seen from the table that bacterial infections are mostly caused by Gram-negative bacteria associated with fecal contamination.

Another introduction: towels shared by many people can be used as an infectious disease for ophthalmology (such as trachoma, conjunctivitis), infectious diseases of respiratory organs (such as tuberculosis, white urinary flu, flu, etc.), hairdresser's towels, hotel bedding, bathrobes It can be used as a medium for skin diseases such as ferrets, ticks, and dysentery, typhoid fever, sexually transmitted diseases, and cholera. Infectious bacteria are very resistant and can survive for a long time. It is difficult to remove them by general washing methods.

In high temperature or labor, the body can sweat up to 0.5~2.0 kg / day. The solid content of sweat is 0.3% to 0.8%, of which 1/4 is organic. Khan itself has no odor, but it can be absorbed by underwear and socks. Microorganisms breed in it, and decompose sweat and its urea, higher fatty acids, sugars, proteins, etc. contained in a mixture of sebum and epidermis to produce a large amount of amino substances. Such as irritating gases, this is the cause of odor, in addition, some people have found that socks release odor associated with Staphylococcus aureus, Staphylococcus epidermidis, Bacillus subtilis, Corynebacterium.

2. Hospital infection and public environmental infection

Intra-hospital infection refers to any infection that is obtained in a hospital. It is a headache for medical staff, especially in pediatric wards, burn wards, special intensive care units, and surgical wards.

In the spring of 2003, the outbreak of SARS disease caused enormous losses to our country, and the main cause of the disease was hospital infection. Even in western developed countries, this problem has not been fully solved. According to the investigation report of the medical delegation of China in 1979, the annual hospital infections in the United States and Switzerland account for about 5% of inpatients, and about 2 million people occur every year. Hospital infections cause economic losses of up to one billion dollars each year. Therefore, nosocomial infections are a problem that has received great attention at home and abroad.

The main pathogens causing infections in hospitals are shown in Table II.

Hospital fabrics are an important medium for infection in hospitals. In our investigation, medical gauze and bandages are also important media for infection in hospitals. They are eager to use antibacterial hygiene finishing fabrics for early use in ward, operating room and medical staff. .

3. Microbial contamination of pharmaceuticals, food and cosmetics

Microbial contamination can not only reduce the quality of pharmaceuticals, foods, and cosmetics, but also cause infections from pharmaceutical, food, and cosmetic sources, with unfortunate consequences. In particular, pharmaceuticals are mainly for the purpose of treatment, with the patient as the object, and in the case where the body's defense function is low, some conditional pathogenic microorganisms may also cause serious infection of the patient.

4. Fiber fabrics and microorganisms

Microorganisms are commonly found on textiles used by people. They rapidly multiply under suitable conditions, causing human skin infections to cause malodor to fabrics with sweat and human secretions. The propagation of mold causes mildew and discoloration of fabrics. It causes degradation of natural fibers. Although synthetic fibers cannot be degraded by microorganisms, they have poor hygroscopicity and lower hygienic properties. The microorganisms remaining on different types of fabrics are also different.

Recent studies have shown that synthetic fabrics are generally more suitable for bacterial reproduction than natural fabrics. In the study of cotton, polyester-cotton, polyester and polypropylene fabrics, it was found that the odor-producing bacteria (S. epidermidis, Corynebacterium) remaining on pure cotton fabrics (especially knitted fabrics) and polyester-cotton blend fabrics and synthetic fabrics There are few fungal fungi. In the study of wool blankets, cotton sheets, knitted underwear, towels and cotton durable pressing fabrics, it was found that Staphylococcus aureus and Salmonella typhimurium had the least amount of remaining on cotton durable pressing fabrics, and the amount of storage on wool blankets. maximum. After the nylon 60/cotton 40 blend fabric was inoculated with Staphylococcus aureus, the cotton was selectively degraded even after washing. However, since this experiment was not performed on cotton fabrics and nylon fabrics, it was not possible to determine whether the selective degradation of cotton was due to the long-term retention of bacteria or the resistance of nylon to Staphylococcus aureus.

On the inoculation of Staphylococcus aureus, Staphylococcus epidermidis, Pseudomonas aeruginosa cotton or wool fabrics, clothes, blankets, the sterilization of commonly used dry cleaning agents (petroleum dry cleaning agents, tetrachloroethylene) and dry cleaning processes were carried out. Determination. The results of the study indicate that many bacteria are still alive on fabrics after dry cleaning and in dry cleaners without a membrane filter dry cleaning machine. A certain amount of bacteria migrated from contaminated dirty clothes to clean clothes. Ordinary cold water washing is ineffective in removing harmful microorganisms, and bleaching and disinfection methods must be used, and frequent special washing of units such as troops is impossible.

Clinical studies have shown that those wearing synthetic fiber socks are more likely to have foot infections than those wearing natural fiber socks, and that the toadstools are not washed from the nylon socks inoculated with the bacteria. Japanese scholars wear nylon, polypropylene, polyester, acrylic, cotton and wool socks for adult men and women for 1-2 months, and found that bacteria are the most on polyester and polypropylene socks, and the least on wool and cotton socks, and water-soluble pollutants. The content is reversed. This shows that cotton and wool socks can absorb well with water-soluble pollutants such as sweat, while socks made of synthetic fibers have poor sweat absorption ability, so that the residual dirt on the skin surface is combined with the high humidity and high temperature in the socks, and the microorganisms are easy to breed. . According to another Japanese data, microbial growth is increasing at high relative humidity (80% or more), and bacterial growth is almost stopped at low relative humidity (10% or less). Americans studied the growth of the virus on cotton and wool fabrics and found that wool fabrics are more suitable for virus retention than cotton fabrics. In the washing experiments on the synthetic fibers and natural fibers inoculated with the virus, it was found that the amount of virus on the fabric was significantly reduced after washing. Although the type of fabric is not a major factor in the amount of virus remaining on the fabric, the virus on the nylon undergarment is the least, and the virus on the wool blanket is the most.

two. Progress in antibacterial hygiene finishing in foreign countries for 20 years

Antibacterial hygiene finishing is called antibacterial finishing and antimicrobial finishing in the United States and other countries; it is called antibacterial and deodorizing processing in Japan. Microorganisms include viruses, bacteria, fungi, and molds, and so far, there have been no reports of antiviral finishing.

There are two methods for producing antibacterial fabrics: one method is to add an antibacterial agent to a fiber-forming polymer, and after spinning, it is made into an antibacterial fiber. Another method is to use an antibacterial finishing method. In the comparative experiments on a large number of antibacterial fibers on the market, it was confirmed that the antibacterial durability of the antibacterial cotton fabric was significantly better than that of the antibacterial synthetic fiber. The reason for the analysis is that the antibacterial agent of the fiber core layer cannot migrate to the fiber cortex and does not have an antibacterial effect, but adding too much antibacterial agent will affect the physical index of the fiber. The best way to solve this problem is to make the antibacterial fiber of the sheath-core structure, that is, to add an excessive amount of the antibacterial agent to the skin layer, and the core layer is a common fiber.

Antibacterial finishing agents are divided into two types: dissolution type and non-dissolution type. The dissolution-type antibacterial finishing agent is not chemically combined with the fabric, but can be taken away by contact with water. Such antibacterial finishing agent is mainly used on disposable textiles; the non-dissolving antibacterial finishing agent can be chemically bonded to the fabric, which The finishing is durable for wearing and repeated washing by grafting or polymerizing an antibacterial agent on the fiber or by mixing an antibacterial agent into the spinning dope to achieve controlled release of the active material for durability.

The ideal features of antibacterial finishing are:

A. Durable for washing, dry cleaning, etc.;

B. It has broad-spectrum and high-efficiency antibacterial properties against harmful microorganisms;

C, no toxicity to the user;

D. It has good gas permeability, does not damage the fiber, and does not cause color change of the fabric;

E. Compatible with other finishing agents;

F, the processing method is simple, and the processing cost is cheap.

Although as early as 4,000 years ago, the ancient Egyptians used medicinal plants to protect the mummies. During the Second World War, the Germans wore sterilized military uniforms to prevent secondary infections, but antibacterial finishing. The large-scale development phase was from the late 1960s to the early 1970s. The antibacterial agents developed at this stage were mainly:

1. Organic mercury compounds: such as pyridine oleate, mercury phenyl oleate, allyl triazine mercury.

2. Organic copper compounds: such as copper hydroxy naphthalate, copper pentachlorophenol, copper 8-hydroxyquinoline.

3. Organic zinc compounds: such as zinc pentachlorophenol, zinc naphthalate, zinc salicylate, and the like.

4. Organic lead compounds: such as lead tributyl acetate, methyl lead sulfide, lead pentachlorophenol, etc.

5. Organotin compounds: such as tributyltin acetate, dimethyl lauryl acetate, tin tributylbutyrate.

6, other metals: such as cadmium pentachlorophenol, barium stearate, cobalt pentachlorophenol and so on.

7. Inorganic metal compounds: such as Ag, AgCl, Cu, Cu(OH)2, Hg

8. Phenols: such as pentachlorophenol, tetrabromo-o-cresol, salicylic acid aniline, dihydroxydichlorodiphenylmethane.

9. Heterocyclic compounds: such as pyrazoles, pyrimidines, and pyrroles.

10. Other organic compounds: such as pentachlorophenyl lauric acid, triphenylmethane dye malachite green and crystal violet, etc.

Most of these preparations have very little dosage and are effective, and they are mostly dissolution-producing antibacterial agents and are not resistant to washing. Later, due to the formaldehyde problem caused by people's investigation of skin inflammation caused by fabrics, in 1973 Japan established the "Restriction Law on Household Products Containing Harmful Substances", organic mercury compounds are prohibited from use, and other parts of metal compounds, etc., because of their The skin has a harmful effect and is mostly abolished. Another type of antibacterial agent BCA/747 (ie 2-(3,5-dimethyl-1-pyrazole)-4-phenyl-6-hydroxypyrimidine) and α-bromocinnamin, which are well known to dyeing and finishing technicians in China. Aldehydes are prohibited from being used in clothing due to the discovery of potential toxicity. Some inorganic antibacterial agents, such as Hg (mercury), Sn (tin), As (arsenic) and their oxides, although have good antibacterial properties, are not washable because they do not have a strong bond with the fabric. Poor fastness, more serious, is toxic and has been explicitly banned for textiles. In the spring of 2001, a Nike T-shirt was banned in the world (including China) due to its toxic tin compound TBT.

Since the 1980s, there have been antibacterial finishing agents with good effects, high safety and washing resistance. The processing technology has become more and more mature, and it has moved toward the development stage of antibacterial hygiene. However, the following problems also exist: (1) Antibacterial spectrum problem: Since bacteria, fungi and mold have different cell structures, it is difficult for a single antibacterial agent antibacterial finishing agent to have a broad spectrum antibacterial effect. For example, halogenated diphenyl ethers have poor antibacterial effects against fungi and molds; compounds that rely on quaternary ammonium salt cations are positively bacteriostatic (some people call it "physical antibacterial" in commercial propaganda, which is actually unscientific) It has poor antibacterial effect on fungi without negative charge. (2) Durability problem: One type is that the antibacterial finishing agent itself is not firmly bonded to the fiber, and thus does not have good washing resistance. The other type is a quaternary ammonium salt compound, wherein the organosilicon quaternary ammonium salt is one of the more studied ones. The antibacterial mechanism of the antibacterial finishing agent is that the quaternary ammonium salt cation attracts the negatively charged bacteria, destroying the bacterial cell wall and causing it to The contents ooze and die. Although these products are resistant to nonionic surfactants and cationic surfactants, the daily use of detergents is anionic surface-washing agents, so that anionic surfactants are washed. In combination with the cationic quaternary ammonium salt, the antimicrobial fabric loses its antibacterial effect.

Since the 1990s, the durability and antibacterial properties of antibacterial hygiene have been newly developed, and multi-functional products such as antibacterial, antibacterial, antibacterial, antistatic, antibacterial, water and oil repellent have emerged, as well as antibacterial bleaching and one bath method. A new process such as antibacterial dyeing and one bath method. Antibacterial hygiene finishing products have been industrialized in the United States, Japan, etc., and a large number of products have been put on the market and are welcomed by consumers. According to Clark M Welch, an antibacterial hygiene organizer in the Southern Research Center of the United States, antibacterial finishing agents are strictly controlled in the United States and require the US Environmental Protection Agency (EPA), the Food and Drug Administration (FDA), and the Consumer Safety Commission. (CPSC) recognizes that there are 18 poisoning experiments for an antibacterial finishing agent, which takes 3-4 years and consumes a lot of money. Therefore, there are fewer types of antibacterial sanitizers supplied in the United States. The price is more expensive. In Japan, there are more than ten chemical companies, such as Shin-Etsu Chemical, Daiwa Chemical, Teijin Pharmaceutical, Dainippon Ink, Sumitomo, Kitakung Chemical and Matsumoto Oil, which produce different compositions of antibacterial finishing agents. Most of the antibacterial agents are organosilicon seasons. Ammonium salt, chitin, diphenyl ether aromatic halide or composite; and the "Japan Fiber Products Sanitary Processing Agreement" was established by relevant manufacturers and health organizations. Antibacterial hygiene in the UK focuses on military and medical applications. For example, Dorset in the South of England has developed a cloth that absorbs odors and other harmful gases. It is a natural fiber made of chlorides and other inorganic salts. Made after special chemical treatment, it has been widely used in medical dressing and ulceration wounds.

three. Development of domestic antibacterial hygiene finishing

Although domestic research on antibacterial and hygienic finishing of fabrics started late, it has developed rapidly. In particular, (formerly Shandong Julong Chemical Co., Ltd.) began researching fabric antibacterial hygiene finishing technology in 1983, and has obtained a number of Chinese invention patents. The quality and performance of the products are at the international leading level (). The company's antibacterial finishing agent SCJ-875 has 18 years of production history, antibacterial and deodorant finishing agent SCJ-963 is sold to domestic and foreign markets in large quantities, and the quality indexes such as antibacterial, durability and safety of antibacterial and hygienic finishing fabrics are respectively passed. Tested by a number of authoritative health units such as the Japan Textile Inspection Association, the Japan Chemical Fiber Inspection Association, ITS, the Chinese Academy of Medical Sciences, the Chinese Academy of Preventive Medicine, and the People's Liberation Army Health Monitoring Center. The Chinese People's Liberation Army 90 training shoes are all made of antibacterial and deodorant finishing fabrics produced by the company. At present, the company has produced more than ten kinds of antibacterial finishing agents, which are suitable for antibacterial and hygienic finishing of cotton, hemp, silk, wool, viscose, polyester/cotton, nylon, acrylic, polyester and other fabrics, and have independent intellectual property rights. . The test and clinical application of many domestic and international authoritative health units prove that the SCJ-963 antibacterial finishing fabric produced by the company has obvious antibacterial, anti-inflammatory, deodorizing, anti-mildew, anti-itching and astringent effects, and can completely kill the golden yellow of the contact fabric. Staphylococcus, Staphylococcus epidermidis, Neisseria gonorrhoeae (domestic strain), Neisseria gonorrhoeae (international standard drug-resistant strain), Streptococcus, Streptococcus pneumoniae, Meningococcus, Escherichia coli, Shigella, Salmonella typhi, Klebsiella pneumoniae, Pseudomonas aeruginosa , Bacillus subtilis, Bacillus cereus, Candida albicans, Fusarium oxysporum, Gypsum-like Trichophyton, Trichophyton rubrum, Penicillium, Aspergillus and other harmful bacteria, after washing 100 times for Staphylococcus aureus, etc. The bacteriostasis rate is still above 99.9%, the moist heat is 120 °C, the high pressure disinfection and ultraviolet irradiation for 100 hours, the antibacterial ability is unchanged, the disease-free bacteria grow on the sheets used in the ward, the patient has no infection, no stimulation to the skin, no Allergic reaction, non-toxic to the human body, no mutagenicity, can effectively prevent infection of diseases such as trachoma, conjunctivitis, gonorrhea, respiratory infections, etc. , Eczema, boils carbuncle, sweat, foot odor, itchy skin have a significant effect. It has no effect on the whiteness and shade of the fabric, does not reduce the hygroscopic vapor permeability and other physical indexes, is soft to the touch, and is comfortable to wear. This product has high practical value for improving the level of health care in China.

The antibacterial finishing agents described below are antibacterial compounds that have been industrially applied or have been introduced abroad for nearly two decades:

1. Silicone quaternary ammonium salt antibacterial finishing agent, such as DC-5700 of Dow Corning Company of the United States, (formerly Shandong Julong Chemical Co., Ltd.) antibacterial finishing agent SCJ-877. Dow Corning introduced the product to the fabric by padding and then dried at 80-120 °C. It is a 42% methanol solution containing 3-(trimethoxysilyl)propyldimethyloctadecyl ammonium chloride (I) (pH 6.5~7). The synthesis reaction is:

Cl3SiH+ClCH2CH=CH2 ClCH2CH2CH2SiCl3

ClCH2CH2CH2SiCl3+3MeOH ClCH2CH2CH2Si(OMe)3+3HCl↑

CH3

CH3

Me

ClCH2CH2CH2Si(OMe)3 + > N-C18H37 (Meo)3SiCH2CH2 CH2 — N⊕—C18H37Cl- [I]

Me

[I]中—Si(OMe)3 makes it possible for water-soluble quaternary ammonium salt antibacterial compounds to be chemically bonded to the fabric, and may also be polycondensed into a film by itself, but such antibacterial agents are for those bacteria that are not negatively charged. No antibacterial effect. At the same time, the cationic quaternary ammonium salt easily reacts with an anionic surfactant such as soap, so that the electropositive property of the antibacterial agent disappears, thereby losing the antibacterial effect.

1. Japan's Third Pharmaceutical Company and Teijin Co., Ltd. collaborated to research the successful T-shirt and Carter S-I antibacterial agent. It is also a methanol solution of cationic active siloxane compound. The appearance is light yellow liquid, PH neutral and weakly acidic. The treated fabric has good antibacterial properties.

2. Diphenyl ether antibacterial finishing agent, the basic principle of such antibacterial finishing agent is that the diphenyl ether compound forms an insoluble precipitate on the surface of the fiber or diffuses into the cortex of the fiber.

Acrylic fiber treated at a temperature of 40-140 ° C for several tens of seconds with a dispersion type processing fluid containing 0.01-10% (wof) 2,4,4-trichloro-2'-hydroxydiphenyl ether, fluoride and cationic dispersant Up to several minutes, the treated fiber has bactericidal properties, water repellency and oil repellency. The fluoride may be a vinyl fluoride or a fluorine-containing hydrocarbon poly(meth)acrylate.

2,4,4'-trichloro-2'-hydroxydiphenyl ether reacts with a chlorine bleach to form a toxic chlorinated derivative, and the antibacterial agent produces a carcinogen after heating or ultraviolet irradiation: tetrachlorodioxane , has been banned from use.

3, nitrofuran antibacterial finishing agent, such compounds are the most interesting finishing agent, the former Soviet Union has more research on this kind of finishing. The fibers treated there have a broad spectrum of antibacterial properties. The 5-nitrofuran compound is deposited on the cellulose fabric by means of a copper salt such as copper acetate to obtain good antibacterial properties. The cellulose fabric is subjected to an antimicrobial treatment using a nitrofuran compound and a complex of a copper salt and a dicyanoquinone resin, and has obtained the national patent of the former Soviet Union.

4, organic nitrogen antibacterial finishing agent, such as AVECIA BIOCIDES company's REPUTEX20 antibacterial agent, antibacterial finishing agent SCJ-875. Polyester, nylon and acrylonitrile fabrics impregnated with monomers and containing polyoxyalkylene groups and ≥2 free radically polymerized double bonds

R1

CH2=CH—C—NH— C—CH2—SO3H

‖

O R2

In an aqueous solution mixture, after padding, polymerization (such as irradiation with an electron beam), the fabric is again

NH NH

‖ ‖

-[(CH2)6-NH-C-NH-C-NH]- n nHCl is treated with an aqueous solution and then dried by rolling. The finished fabric has good antibacterial and antistatic properties and antifouling properties.

5. Dip the fiber fabric in an aqueous dispersion solution containing N,N-dimethyl-N'-phenyl-N'-(dichlorofluoromethylthio)sulfonamide and polyethylene glycol alkyl ether In the middle, after drying after padding, the treated fabric still has excellent antibacterial properties after 20 washings.

a mixture of 6.2-(4'-thiazolyl)benzimidazole, N-(-fluorodichloromethylsulfide)phthalamide, alpha-bromocinnamaldehyde, and the like, and an acrylate, applied to the fabric, and heat treated , has good antibacterial properties. Organic solvent-soluble compounds such as N-(fluorodichloromethyl-thio)benzimidazole and α-bromocinnamaldehyde, and partial methyl groups of alkylethylene urea, dimethylpolysiloxane and polyoxyethylene Substituent treatment of the fabric results in durable antimicrobial properties without reducing the water absorption of the fabric.

7. After the methyl benzzimidazolecarboxylate is dissolved in an aqueous solution of hydrochloric acid, a stabilizer such as polyvinyl alcohol is added, and then an alkali agent is added to precipitate a fine aqueous dispersion of the particles, which can penetrate into the fiber well when the textile is processed. Antifungal.

8. It will contain a solvent for acrylic fibers (such as ethylene carbonate) and a bactericidal metal or other compound (such as Ag, Cu, AgCl, CuI, Cu(OH)2, etc.) with a particle diameter less than one tenth of the fiber diameter. The processing fluid is applied to the fabric, and then heat-treated to diffuse the fine powder into the fiber skin layer, and finally, the treated fabric has good bactericidal properties.

9. Treatment of nylon 66 fabric with BCA (α-bromocinnamaldehyde) and 747 (2-[3,5-methylpyridyl]-6-hydroxy-4-benzylpyrimidine), washing 10 times still has good antibacterial effect .

10. Acrylic fiber or nylon containing acrylonitrile group treated with copper sulfide and the like has obvious antibacterial, deodorant and antistatic effects.

11. The antibacterial inorganic metal salt, metal oxide or photocatalyst is adhered to a fabric by a film-forming substance such as acrylate (commercially referred to as "implantation"), and has better antibacterial properties under specific conditions. effect. However, there are problems such as hard hand feeling and reduced air permeability of the fabric.

In addition, there are many antibacterial and hygienic finishing methods, such as 1) treating fabric with antibacterial agent 1-hydroxy-2-pyridinone with aluminum chlorohydroxide or tetraisopropyl titanic acid, and then drying The test with a modified Quinn test has a higher antibacterial rate. 2) The chitin and the fabric are joined together by a polyfunctional active group, and the treated fabric has a certain antibacterial and washing resistance. 3) Acetylation of cellulose fibers, which changes the matrix to obtain durable antimicrobial properties. 4) The antibacterial compound is applied to the fabric using microcapsule technology to obtain durable antibacterial properties. 5) Soviet scholars grafted copolymerized copper acrylate or 1,2-dimethyl-5-vinylpyridine on cotton fibers to obtain antibacterial properties. 6) Isothiazolinone compounds, trifluoromethyl diphenyl ether, tetrakis-(N-hydroxymethyl-carbamoylethyl)-ethylenediamine, 1-bis-trifluoromethyl-pyridyl -3 - aryl urea and the like have also been reported for antibacterial hygiene finishing.

[China Antibacterial Fabric Network ]