The chemistry of textiles - Devan
Transcript of The chemistry of textiles - Devan
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DEVAN CHEMICALS 1
© Devan Chemicals NV 2011 - Rev: 17/11/11
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The Chemistry of TextilesAntimicrobial Finishes
N b 17th 2011
DEVAN CHEMICALS
November 17th 2011
Ing. Alain Langerock
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Antimicrobial Finishes
Devan Chemicals
Microorganisms and Dust Mites
Typical Applications
AntimicrobialsAntimicrobials
The ægis™ Technology
Processing & Quality Control
Safety profile & Registrations
NEW: Multi-functional finish program
Conclusions
DEVAN CHEMICALS 3
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The Devan Group
PROTECTING and MODIFYING PROTECTING and MODIFYING
TEXTILE SURFACES
creating new and innovative properties and functionality
taking into consideration
SUSTAINABILITY
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Sustainability strategy: 1990
Since 1990, Ecology has been the DNA of Devan
1995: Halogen-free flame retardants (Eco-flam™)
1999: Non migrating antimicrobial (ægis™ )
2001: Masterbatch for inherent performance properties (@2spin™)
2002: Non-chlorine wool shrink-resist (Dylan™)2002: Non chlorine wool shrink resist (Dylan )
2005: Environmentally more acceptable insect resist (insecta™)
2008: Reactive capsules (no need of binders) (Thermic™)
2011: Reactive multi-functional finishes (&Fresh™)
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The teamHighly qualified, technically driven company
60% Graduates in appropriate disciplines60% Graduates in appropriate disciplines• Chemistry • Textile technology • Marketing• Finance and administration
40 % of staff works in R&D
10% of turnover invested in R&D (internal & external)
We are not a chemical company, but a technology company.
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Global thinking, local acting…
DEVAN CHEMICALS
Devan Offices Production Centers Technical Service and/or Warehouse
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The Use of Antimicrobials in TextilesThe Use of Antimicrobials in Textiles
De an ChemicalsDevan Chemicals
Microorganisms and Dust Mites
Typical ApplicationsTypical Applications
Antimicrobials
The ægis™ Technology
Processing & Quality Control
Safety profile & Registrations
l f l f h NEW: Multi-functional finish program
Conclusions
DEVAN CHEMICALS 8
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Microorganisms
FungiBacteria Algae
Microorganisms are single-celled organisms that cannot be seen with the naked eye
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Microbes
To find virtually everywherey y
In the air we breath
On our skin and bodies
In the soil
On practically all surfaces
around us
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Microbial growth
Microbes require certain conditions to grow such asq g
Food (dirt, fibre, perspiration)Warm temperaturesWarm temperaturesMoisture (humidity, spills)Surface (skin, fabric)
Our modern life and work style are beneficial for microbial growthfor microbial growth.
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Microbes
Microbial growth can result inObjectionable Odours
Unsightly stains
Product deteriorationProduct deterioration
Loss in Storage and Transport
Disease and Infection
Allergenic responses
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Dust mites
D t h id t i
DEVAN CHEMICALS
Dermatophagoides pteronyssinus
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Dust mites
Major cause of
llAllergies
Skin irritations
AsthmaAsthma
Other respiratory diseases
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Dust mites
S id lik i l (8 l )
… what is a dust mite?
Spider like animal (8 legs)
Size 0.1 – 0.5 mm (not visible by eye)
Nutrition: Skin scales and fungiNutrition: Skin scales and fungi
Ideal living condition:
15-30°C and 55-85% relative humidity: Bedding,
Upholstery, Carpets,…
Proliferation
th h b t 150 i lif l through about 150 eggs in a life cycle,
Life duration: ca. 2-4 months
Problem: excrements contain allergen ‘DerP1’
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g
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Dust mites
Dust & allergens
Human being
Skin scales
Drying out
Skin scales
Home textilesmicro fungi A repensA. repens
Warmth & humidity
excrementsDust mite
y
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Dust mites
An antimicrobial technology eliminates the Aspergillus repens and thus breaks the dust mite's food chain.
An antimicrobial technology is not a insecticide or a pesticide.An antimicrobial technology prevents the growth of dust mites An antimicrobial technology prevents the growth of dust mites populations through interruption of their nutrition chain.
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The Use of Antimicrobials in TextilesThe Use of Antimicrobials in Textiles
De an ChemicalsDevan Chemicals
Microorganisms and Dust Mites
Typical ApplicationsTypical Applications
Antimicrobials
The ægis™ Technology
Processing & Quality Control
Safety profile & Registrations
l f l f h NEW: Multi-functional finish program
Conclusions
DEVAN CHEMICALS 18
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Benefits of an antimicrobial technology
Long-lasting freshness
Eliminates the smells created by yeast fungus and bacteria by yeast, fungus and bacteria in the product
Controls or eliminates i bi l i i f h microbial staining of the
treated article
Eliminates Dust MitesEliminates Dust Mites
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Typical textile applications
Socks hosiery footwearSocks, hosiery, footwear
Underwear
SportswearSportswear
Shirts
Work wear
Towels
Outdoor Equipment
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Typical bedding applications
Bedding articlesg
Mattress ticking
M tt i t li iMattress interlining
Mattress protection
Bed sheetsBed sheets
Pillows & Quilts
Filling fibre (Fibrefill)Filling fibre (Fibrefill)
DEVAN CHEMICALS 21
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The Use of Antimicrobials in TextilesThe Use of Antimicrobials in Textiles
De an ChemicalsDevan Chemicals
Microorganisms and Dust Mites
Typical ApplicationsTypical Applications
Antimicrobials
The ægis™ Technology
Processing & Quality Control
Safety profile & Registrations
l f l f h NEW: Multi-functional finish program
Conclusions
DEVAN CHEMICALS 22
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Antimicrobial agents
Capable of destroying or suppressing the growth of micro-organisms. Differ in their:
Chemical NatureMode of operationDurabilityyEffectivenessSafetyCostVerificationRegistrations
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Mode of action
Migrationfrom substrate to bacteria
No migrationmechanical process
for antimicrobial action for antimicrobial action
Conventional organic and i i ti b t
™
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inorganic active substances
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Migrating antimicrobials
Diffuse from the substrate to the microbeDiffuse from the substrate to the microbe
Leach or migrate out of the substrate into the Leach or migrate out of the substrate into the
environment
Are consumed by micro-organisms
Chemically interrupt (poison) the cell
May cause adaptive micro-organisms
Leach out in contact with water or humid
conditions
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Migrating antimicrobials
Zone of inhibition in Agar diffusion tests
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Migrating antimicrobials
Antimicrobial active substances that require
Bis chlorinated phenols (triclosan)
Antimicrobial active substances that require migration for their action are for example:
Bis chlorinated phenols (triclosan)
Organo tins (i.e.TBT)
Heavy metals organo complexes (Pb Hg As )Heavy metals organo complexes (Pb,Hg,As,…)
Water Soluble Quats
Ag & CU Zeolitesg
Biguanide
Chitin
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Non migrating antimicrobials
Are bounded to the substrate and require aAre bounded to the substrate and require acontact by the microbe
Are bonded to the product surface
Are not consumed by micro-organisms
Mechanically interrupts (stabs) the cell wall
Remain functional for the life of the product
Will not cause adaptive micro-organisms
DEVAN CHEMICALS 28
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The Use of Antimicrobials in TextilesThe Use of Antimicrobials in Textiles
De an Chemicals & ÆGIS En ironmentsDevan Chemicals & ÆGIS Environments
Microorganisms and Dust Mites
Typical ApplicationsTypical Applications
Antimicrobials
The ægis™ Technology
Processing & Quality Control
Safety profile & Registrations
l f l f h NEW: Multi-functional finish program
Conclusions
DEVAN CHEMICALS 29
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The ægis™ technology
Only the microorganisms which are in contact with the substrate will be deactivated, not the beneficial microorganisms living on our skin., g g
ægis™
Microorganism
ægis™
Fibre
Attraction Perforation Deactivation
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The ægis™ technology
3-(Trihydroxysilyl) propyl dimethyloctadecyl ammoniumchloride
Anchor
Reacts with
⊕
Cell
Aliphatic C18 chainLipophilic properties (loves fat)Reacts with
fibre and itself
DurabilityDurability
Cell wall
AttractionAttraction DisruptionDisruption
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The ægis™ technology
3-(Trihydroxysilyl) propyl dimethyloctadecyl ammoniumchloride
DEVAN CHEMICALS 32
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The ægis™ technology
Bonding to the textile and cross-linking with itself
H CCH2
H2CCH2
H2CCH2
H2CCH3
H CCH2
H2CCH2
H2CCH2
H2CCH3
H CCH2
H2CCH2
H2CCH2
H2CCH3
H CCH2
H2CCH2
H2CCH2
H2CCH3
CH2
H2CCH2
H2CCH2
H2CCH2
H2C
CH2
H2CCH2
H2CCH2
H2CCH2
H2C
CH2
H2CCH2
H2CCH2
H2CCH2
H2C
CH2
H2CCH2
H2CCH 2
H2CCH 2
H2C
H2CCH2
CH2
H2CCH2
H2CN CH3H3C
H2CCl-
H2CCH2
CH2
H2CCH2
H2CN CH3H3C
H2CCl-
H2CCH2
CH2
H2CCH2
H2CN CH3H3C
H2CCl-
H2CCH2
CH2
H2C2
H2CN CH 3H3C
H2CCl-
O Si O Si O Si O Si O
O OOO
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Polymerisation: monomer => polymer
The ægis™ technology is based on the fixation of a non migrating permanent coating on the fibresp g
ægis™
Fibre
ægis™
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The cell membrane
Microbe
Cell membrane
C18
Phospholipids = FatNegative Charge
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The ægis™ technology
Cell membrane
fatfat
lipophilicNeg. charge
Pos. chargePos. charge
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The ægis™ technology
The microorganisms are killed by two actions:1) Electrical short-cut: Neg. et Pos. meet
2) Physically disrupts the cell membrane through physical penetration
DEVAN CHEMICALS 37
2) Physically disrupts the cell membrane through physical penetration
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The ægis™ technology™
There are approximately 25.000 swords available for 1 microorganism.
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The ægis™ technology =
Non-toxic and respect for the environment
The chemical bonding causes the surface to become antimicrobially active
• No migration to the skin
• No migration to the No migration to the environment
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Cell wall disruption
untreated ™
DEVAN CHEMICALS 40
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The Use of Antimicrobials in TextilesThe Use of Antimicrobials in Textiles
De an Chemicals & ÆGIS En ironmentsDevan Chemicals & ÆGIS Environments
Microorganisms and Dust Mites
Typical ApplicationsTypical Applications
Antimicrobials
The ægis™ Technology
Processing & Quality Control
Safety profile & Registrations
l f l f h NEW: Multi-functional finish program
Conclusions
DEVAN CHEMICALS 41
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Qualitative 1 minute test
Bromophenol blue (BPB) staining teststaining test
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Blue test kit
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The Use of Antimicrobials in TextilesThe Use of Antimicrobials in Textiles
De an Chemicals & ÆGIS En ironmentsDevan Chemicals & ÆGIS Environments
Microorganisms and Dust Mites
Typical ApplicationsTypical Applications
Antimicrobials
The ægis™ Technology
Processing & Quality Control
Safety profile & Registrations
l f l f h NEW: Multi-functional finish program
Conclusions
DEVAN CHEMICALS 44
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Safety profile
Excellent skin tolerance (OECD 406, HRIPT)
Free of heavy metals, Silver, TBT, Formaldehyde, Triclosan ArsenicTriclosan, Arsenic,…
Non toxic to waste water bacteria (activated sludge) to and biodegradable (OECD 209 and 302B
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Registrations
Unique registration profile
C.A.S., Nr. 27668-52-6
BPD Notification in Europe, Nr. N605
EPA in the USA, Nr. 64881-2
Öko-Tex Standard 100, Class 1-4 (ed. 01/07)
Only product registered for Belgian Market Nr 6606BOnly product registered for Belgian Market, Nr. 6606B
Canada PMRA # 28541 (DSL)
Japan ENCS # 2-2095X
Australia AICS
Korea ECL # KE-34384
China: Listed in approved chemical Inventory
DEVAN CHEMICALS 46
pp y
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The Use of Antimicrobials in TextilesThe Use of Antimicrobials in Textiles
De an Chemicals & ÆGIS En ironmentsDevan Chemicals & ÆGIS Environments
Microorganisms and Dust Mites
Typical ApplicationsTypical Applications
Antimicrobials
The ægis™ Technology
Processing & Quality Control
Safety profile & Registrations
l f l f h NEW: Multi-functional finish program
Conclusions
DEVAN CHEMICALS 47
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Multi-functional finishes: “& Fresh”
TM
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Multi-functional finishes: “& Fresh”
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Multi-functional finishes: “& Fresh”
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Multi-functional finishes: “& Fresh”
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Multi-functional finishes: “& Fresh”
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The Use of Antimicrobials in TextilesThe Use of Antimicrobials in Textiles
De an Chemicals & ÆGIS En ironmentsDevan Chemicals & ÆGIS Environments
Microorganisms and Dust Mites
Typical ApplicationsTypical Applications
Antimicrobials
The ægis™ Technology
Processing & Quality Control
Safety profile & Registrations
l f l f h NEW: Multi-functional finish program
Conclusions
DEVAN CHEMICALS 53
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Conclusion
Active Freshness: stops bacterial and fungal growth
Feature and benefits for the end consumer
Active Freshness: stops bacterial and fungal growth, the major cause of most fabric odour problems.
Active Hygiene: controls the development of dust mites by destroying some fungi necessary dust mites by destroying some fungi necessary in the dust mite's food chain.
Permanent: Durable for the useful life of most products.
Not a chemical poison: No arsenic heavy metals or polychlorinated phenols Not a chemical poison: No arsenic, heavy metals, or polychlorinated phenols, unmatched safety profile: not harmful for human or environment
No Migration: Won't leach into the environment or transfer to other articles or to the skin - no "zone of inhibition".the skin no zone of inhibition .
Multi-functional finishes: Moisture management, shape retention & after wash appearance
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DEVAN CHEMICALS 55DEVAN CHEMICALS KLEIN FRANKRIJK 18 9600 RONSE - BELGIUM T +32 55 23 01 10 F +32 55 23 01 19 WWW.DEVAN.NET