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Enzymes for textile Industry
1. ENZYMES FOR TEXTILE INDUSTRY
Nadeera Dodamgoda
Dpt of Chemical and Process Engineering
University of Moratuwa
2. WHAT ARE ENZYMES?
• biological catalysts for biochemical reactions
• Every enzyme has a specific function
• accelerate the reaction rate by reducing the
activation energy.pH and temperature sensitive.
• Stable and work in mild conditions
• Categorized according to the compounds they
act upon.
Ex: Cellulase enzyme for Cellulose, Lipase for lipids
5. APPLICATIONS
• Food & Diary Industry – Amylase,
Protease, Rennin, Lipase, Lactase
• Brewing Industry – Amylase, glucanases, proteases
• Paper Industry – Amylases, Cellulases, ligninases
• Biofuel Industry – Cellulases, Ligninase
• Textile Industry - Cellulase, Lipace
6. OBJECTS OF GARMENT WASHING
• To remove starch that applied during fabric
manufacturing - Desizing
• To soften the garment hand feel
and improve bulkiness
• To remove dirt, spots, oil stains that
accumulate to garment at the garment
manufacturing processes.
• To remove chemicals used during printing
process and embroidery process
7. USAGE OF ENZYMES IN TEXTILE
INDUSTRY
• De sizing
• Enzyme washing – Makes the garment softer and more
supple(Hand feel). Used to get various wash looks
• Enzyme stone washing
• Bio polishing
• Remove stains
8. Desizing
• It is the process of removing the sizing
material from the warp yarns after the textile
fabric is woven.
• Desizing methods: Enzymatic, Oxidative, Acid, Removal
of water soluble sizes
Advantages of using Enzymes
• Less time required
• No damage to the fiber
• Biodegradable
• Closely constructed fabric can be easily desized due to
the effective enzyme action
10. Bioscouring
Enzymatic Scouring or Bio-Scouring can simply be defined as the application
of living organisms and their components to remove the natural and added
impurities. Conventional scouring requires high temperatures and high
consumption of chemicals.
Suppliers
11. •Bleach Cleanup
• Natural fabrics such as cotton are normally bleached with
hydrogen peroxide before dyeing. Bleaches are highly reactive
chemicals and any peroxide left on the fabric can interfere
with the dyeing process. Therefore a thorough ‘bleach clean-
up’ is necessary
• The traditional method is to neutralize the bleach with a
reducing agent or to rinse with hot water. Both the methods
require copious amounts of water
Advantages of using enzymes for clean up
• Less environmental pollution
• easier and quicker to use
• Less water & energy consumption
• Less amount is needed
• Safe to use
13. TYPES OF ENZYMES
• Acid Enzymes – Ex: Bio polishing 75L
Conditions: pH 4.5 ,Temperature: 550C
Used to remove pilling , suitable for cotton fabrics
• Neutral Enzymes – Ex: Coldzyme LCS
Conditions: pH 6-6.5, Temperature: 400C
Suitable for light weight fabrics Ex: Linon
• Alkali Enzymes – Ex: Adzyme RDC
Conditions: pH 8.5, Temperature: 550C
Used to get a good high low property
14. SUPPLIER CHEMICAL NAME PRODUCT NAME USAGE
Resil
•Amaylases
• Acid cellulases
• Neutral
cellulases
Ezysize Ultima
Ezysize 3XXL
Ezysize Flex conc
Ezysoft XCL
Ezysoft BSE
Ezysoft 300L
Ezycare Neutra Max
Ezycare Neu
Desizing agents
Bio polishing agents
High contrast finishing
Minimal backstaining
Chromotech
•Cellulase
•Alpha Amaylase
Chromolase Bio P
Chromolase THN
Chromolase HTE
Chromolase LTE
Bio polishing
Stone wash effect
Desizing agents
15. ADVANTAGES OF USING ENZYMES
• Energy saving – Active in mild conditons. Low
temperatures and moderate pH
• Cost saving – a reduction in the amount of chemicals
used
• Time saving – Powerful, less time needed
• Eco friendly – Fully bio degradable
• Each enzyme has a specific function
Ex: Polyesterase will not attack the cotton part in a cotton
polyester fabric. It will only hydrolyze the polyester part.
16. BIO POLISHING-DE PILLING ENZYMES
• Fabric pilling is the formation of small, fuzzy
balls on the surface of a fabric
• Enzymes are used to remove pilling
Ex: Cellulase is used to remove pilling in cotton fabric
• Enzymes in controlled conditions, hydrolyze
and break the protruded fiber parts on the
fabric surface. This is called de pilling.
17. REACTION BETWEEN ENZYEME &
POLYESTER
• As in cellulose cellulase reaction, the
polyesterase enzyme can hydrolyze the ester
bond.
