Antimicrobial finish ...
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This presentation discusses antimicrobial finishes for textiles. Microbes like bacteria and fungi can grow on fabrics and cause odor, staining, and quality deterioration. Antimicrobial treatment prevents microbial growth. Methods include using antimicrobial fibers or post-treating fabrics. Common agents are quaternary ammonium compounds which are applied during pretreatment or finishing. Testing verifies the effectiveness of treatments against microbes using agar diffusion, challenge, and other standard tests. Antimicrobial textiles are important for hygiene in applications like socks, sportswear, and linens.
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Antimicrobial finish ...
- 1. A PRESENTATION ON: A Presentation By: MD. Mezbaul (130103015) Email: [email protected]
- 2. 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.
- 3. ANTIMICROBIAL FINISH FOR TEXTILE In 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.
- 4. 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
- 5. 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.
- 6. 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.
- 7. 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 .
- 8. Commercial Antimicrobial Textile Products ANTIMICROBIAL FIBERS Commercial Name Company RHOVILAS RHOVYL AMICOR COURTAULDS AMICOR PLUS COURTAULDS SILFRESH NOVACETA MICROSAFE AM HOECHST-CELANESE BACTEKILLER KANEBO LIVERFRESH N KANEBO LIVERFRESH A KANEBO LUFNEN VA KANEBO SA 30 KURARAY BOLFUR UNITIKA FV 4503 AZOTA-LENZING CHITOPOLY FUJI-SPINNING THUNDERON NIHO SANMO DYING ANTIMICROBIAL TEXTILE FINISHES Commercial Name Company AEGIS DEVAN VANTOCIL IB ZENECA ACTICIDE THEOR KATHON ROHM ET HAAS PREVENTOL BAYER BIO-PRUF MORTON SANIGARD SANDOZ-SANITIZED ANTIMICROBIAL FIBER FINISHES Commercial Name Company AEGIS DEVAN EOSY UNITIKA EASOF UNITIKA UNIFRESHER UNITIKA BIOSIL B 89 TOYOBO BIOCHITON ASAHI CHEM. IND. BIO-PRUF MORTON
- 9. DEVELOPMENT OF ANTIMICROBIAL TEXTILES Hosiery 4% Socks 21% Sportswear 30% Shoes lining 17% Lingerie 19% Men's underwear 2% Others 7% WEST EUROPE - 2000 Hosiery 1% Socks 25% Sportswea 18% Shoes lining 9% Lingerie 11% Men's underwear 9% Others 27% Fabrics with antimicrobial post-treatment 26.5 ktons Fabrics with antimicrobial fibers 4.5 ktons
- 10. 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
- 11. 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.
- 12. 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.
- 13. 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.
- 14. 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/