A PRESENTATION ON:

ANTIMICROBIAL FINISH FOR TEXTILE

A Presentation By:MD. Mezbaul (130103015)Email: tonmoy.te@hotmail.com

MICROBES

• Microbes are the tiniest creatures not seen by the naked eye. They include a variety of micro organisms like bacteria, fungi, algae and viruses. Bacteria are unicellular organisms, which grow very rapidly under warmth and moisture.

ANTIMICROBIAL FINISH FOR TEXTILEIn the present day world most of us are very conscious about our hygiene and cleanliness. Clothing and textile materials are not only the carriers of microorganisms such as pathogenic bacteria, odour generating bacteria and mould fungi, but also good media for the growth of the microorganisms. To prevent such problem textile treated with Bio shield AM 500 . This process is known as antimicrobial finish for textile.

MICROBIAL ATTACK

Strength reduction

Contamination risk

Quality loss

DEVELOPMENT OF ANTIMICROBIAL TEXTILES

The microbial attack on textiles results in:

Odor formation

Detrimental effects on the

consumer

Detrimental effects on the

fabric itself

NECESSITY OF ANTIMICROBIAL FINISHES Antimicrobial treatment for textile materials is necessary to fulfill the following objectives:

• To avoid cross infection by pathogenic micro organisms.

• To control the infestation by microbes.

• To arrest metabolism in microbes in order to reduce the formation odour.

• To safeguard the textile products from staining, discolouration and quality deterioration.

REQUIREMENTS FOR ANTIMICROBIAL FINISH

• Durability to washing, dry-cleaning and hot pressing.

• Selective activity to undesirable micro organisms.

• Should not produce harmful effects to the manufacturer, user and the environment.

• Effective control of bacteria, molds and fungi• Compatibility with the chemical processes.

• Easy method of application. No deterioration of fabric quality.

• Resistant to body fluids; and resistant to disinfections/sterilisation.

ANTIMICROBIAL TEXTILES FABRICATION METHODS

The methods of fabrication of antimicrobial textiles can be classified in two principal categories:

Fabrics with antimicrobial post-treatment

Fabrics with antimicrobial fibers .  

Commercial Antimicrobial Textile ProductsANTIMICROBIAL FIBERS

Commercial Name

Company

RHOVILAS RHOVYLAMICOR COURTAULDSAMICOR PLUS COURTAULDSSILFRESH NOVACETAMICROSAFE AM HOECHST-

CELANESEBACTEKILLER KANEBOLIVERFRESH N KANEBOLIVERFRESH A KANEBOLUFNEN VA KANEBOSA 30 KURARAYBOLFUR UNITIKAFV 4503 AZOTA-LENZINGCHITOPOLY FUJI-SPINNINGTHUNDERON NIHO SANMO

DYING

ANTIMICROBIAL TEXTILE FINISHES

Commercial Name

Company

AEGIS DEVANVANTOCIL IB ZENECAACTICIDE THEORKATHON ROHM ET HAASPREVENTOL BAYERBIO-PRUF MORTONSANIGARD SANDOZ-

SANITIZEDANTIMICROBIAL FIBER FINISHESCommercial

NameCompany

AEGIS DEVANEOSY UNITIKAEASOF UNITIKAUNIFRESHER UNITIKABIOSIL B 89 TOYOBOBIOCHITON ASAHI CHEM. IND.BIO-PRUF MORTON

DEVELOPMENT OF ANTIMICROBIAL TEXTILES

Hosiery4% Socks

21%

Sportswear30%

Shoes lining17%

Lingerie19%

Men's underwear

2%Others

7%

WEST EUROPE - 2000

Hosiery1% Socks

25%

Sportswear18%Shoes

lining9%

Lingerie11%

Men's underwear

9%

Others27%

Fabrics with antimicrobial post-treatment

26.5 ktons Fabrics with antimicrobial

fibers 4.5 ktons

ANTIMICROBIAL AGENTS

• Antimicrobials are defined as the agents that either kill microorganisms or simply inhibit their growth.

The degree of activity is denoted by:

• «-cidal»: agent that kill microorganisms

• «-static»: agents that inhibits microorganisms’ growth

ANTIMICROBIAL FINISH

•Pretreatment

1. The material is treated with 2g/l acetic acid at 70 0C for 15 minutes with water. 2. The liquor ratio is 1:20. 3. The material is given a cold wash for 5 minutes. 4. The pH is maintained at 7.

CHEMICAL USED

Bio shield AM 500 which is an aqueous solution of silicon quaternary ammonium salt.

ANTIMICROBIAL FINISH

•Finish Application

1. The pretreated cotton fabric is treated with bio shield AM 500 at three different concentrations 1%, 2% and 3% respectively at room temperature for 30 minutes with water.2. The liquor ratio is 1:7. 3. The material is hydro dried for 5 minutes. 4. The pH is maintained at 6. 5. Finally the fabric samples are tested for antimicrobial

activity as per the standard test methods.

EVALUATION OF ANTIMICROBIAL ACTIVITY Various test procedures have been used to demonstrate the effectiveness of the antibacterial activity. Some of the tests used are:

• Agar diffusion test.

• Challenge test (Quantitative).

• Soil burial test.

• Humidity chamber test.

• Fouling tests.

REFERENCE

1. "INTELLIGENT TEXTILE STRUCTURES - APPLICATION, PRODUCTION & TESTING“

12-13/5/2005, Thessaloniki, Greece, Amphitheater of Thessaloniki Technology Park

2. http://www.indiantextilejournal.com/

3. http://www.technicaltextile.net/