DuPont Industrial Biosciences' Biobased Enzymes Offer Sustainable Textile Solutions

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Trials with Cotton Incorporated Demonstrate Effectiveness & Efficiency …

Trials with Cotton Incorporated Demonstrate Effectiveness & Efficiency

The trials, which focused on ways to integrate and bio-optimize textile processing in knits, show that biobased enzymes used in combination can eliminate the need for caustic chemicals, while dramatically reducing water and energy use, as well as overall processing time.

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  • 1. Enzymatic Preparation: Developments for Enhanced Performance & SustainabilityD l t f E h dP f & S t i bilitA collaborative approach by Cotton Inc. and DuPont to integrate and optimize  enzymatic processing in knits Mary‐Ann Ankeny   Director Dyeing Research @ Cotton Incorporated, Cary (NC) USANico van Schoot      Marketing Manager @ DuPont Industrial BioSciences, Leiden NL“Great Ideas in Cotton” – Hongkong, 22 May 2012
  • 2. Agenda • Introduction DuPont Industrial BioSciences • Enzymes for Textiles • Full Enzymatic Textile Processing (FETP), a new concept for sustainable textile  processing • Cotton Inc. study FETP on knitsEnzymatic Preparation: Developments for Enhanced Performance & Sustainability 2
  • 3. DuPont Industrial BioSciences W are applying our science t fi d solutions t major challenges… We l i i to find l ti to j h ll FEEDING THE WORLD REDUCING OUR DEPENDENCE KEEPING PEOPLE AND ON FOSSIL FUELS THE ENVIRONMENT SAFEEnzymatic Preparation: Developments for Enhanced Performance & Sustainability 3
  • 4. Textile enzymes today..Enzymatic Preparation: Developments for Enhanced Performance & Sustainability 4
  • 5. PrimaGreen® enzymes Enzymes: • are biodegradable • are made from renewable resources • can replace corrosive chemicals • can lower use of water and energy  PrimaGreen® enzyme products for textiles & garments:  • lower processing temperatures  decrease energy consumption & CO2 emissions • allow combined processing p g  decrease water consumption p • work at neutral pH  gentle & safer processing conditions • are substrate specific  reduce fabric damage & weight lossEnzymatic Preparation: Developments for Enhanced Performance & Sustainability 5
  • 6. Full enzymatic textile processing … at neutral pH & mild temperature conditions.Enzymatic Preparation: Developments for Enhanced Performance & Sustainability 6
  • 7. Agenda • Introduction DuPont Industrial BioSciences • Enzymes for Textiles • Full Enzymatic Textile Processing (FETP), a new concept for sustainable textile  processing • Cotton Inc. study FETP on knitsEnzymatic Preparation: Developments for Enhanced Performance & Sustainability 7
  • 8. Minimizing pH Adjustments Conventional C i l Enzymatic E i Conventional Scour/ Conventional Bleach Cellulase Inactivation Dye Fixation Dye Fixation Enzymatic Scour/  Neutralization Enzymatic Bleach Incoming Water Dye Exhaustion Neutralization Incoming Water Neutral Cellulase/  Neutralization Dye Exhaustion Acid Cellulase Acid Cellulase Each pH adjustment increases: • processing time • chemical usage • potential for fabric damage potential for fabric damageEnzymatic Preparation: Developments for Enhanced Performance & Sustainability 8
  • 9. Whiteness Index – Bleached Goods Enzymatic  Conventional Standard Formula Alternative Formula  Garment Scale 77.21 66.4 75.17 Interlock Full Scale 75.26 68.88 l Garment Scale 75.17 62.39 71.76 Jersey Full Scale 73.89 65.84 • The goods bleached with the standard enzymatic formula  did not match the level of whiteness of conventionally  did not match the level of whiteness of conventionally bleached goods.  • The difference in whiteness level did not have a  significant impact on the color of dyed goods.  significant impact on the color of dyed goods • The whiteness level can be increased by adjusting the  enzymatic formula if a higher degree of whiteness is  q required. Enzymatic Preparation: Developments for Enhanced Performance & Sustainability 9
  • 10. Process Comparison – Dark Shade Total Time: 389 Total Fills: 13 T t l Fill 13 Total Time: 266 Total Fills: 7Enzymatic Preparation: Developments for Enhanced Performance & Sustainability 10
  • 11. Process Comparison – Medium Shade Total Time: 413 Total Fills: 14 T t l Fill 14 Total Time: 341 Total Fills: 8Enzymatic Preparation: Developments for Enhanced Performance & Sustainability 11
  • 12. Process Comparison – Light Shade Total Time: 350 Total Fills: 13 T t l Fill 13 Total Time: 250 Total Fills: 6Enzymatic Preparation: Developments for Enhanced Performance & Sustainability 12
  • 13. Sustainability – Water, Steam, and Energy PROCESS Time (mins) Water used (l) Steam Used (lbs) Power (kWH) Conventional 415 14436 412.81 20 Dark Shade (Reactive Dye) Enzymatic 318 2371 331.26 15 % Improvement %I t 23% 84% 20% 25% Conventional 506 17063 532.86 25 Medium Shade (Reactive Dye) Enzymatic 369 6329 354.14 18 % Improvement % Improvement 27% 63% 34% 28% Conventional 443 15298 519.35 22 Light Shade (Direct Dye) Enzymatic 309 5756 288.04 16 % Improvement % Improvement 30% 62% 45% 27%Enzymatic Preparation: Developments for Enhanced Performance & Sustainability 13
  • 14. Fabric Testing – Dark Shade (Reactive) Fabric Performance Fabric Performance Weight (oz/yd2) Burst Strength(psi) Pilling Conventional 5.8 93.1 4.7 Full Scale Enzyme 5.6 103.7 3.9 Interlock Conventional 7.2 90.9 5.0 Garment Scale Enzyme 7.0 87.4 4.9 Conventional 5.3 95.3 Full Scale Enzyme 5.8 93.4 Jersey Conventional 6.6 89.6 Garment Scale Enzyme 6.5 86.5 Color Measurement DEcmc %STR‐WSUM  Interlock 0.26 97.86 Garment Scale Jersey 0.30 0 30 100.37 100 37 Interlock 0.30 97.52 Full Scale Jersey 0.38 97.04 Color measurement data are the results from comparing the  enzymatically processed goods to their conventionally processed  enzymatically processed goods to their conventionally processed counter part.  Enzymatic Preparation: Developments for Enhanced Performance & Sustainability 14
  • 15. Fabric Testing – Medium Shade (Reactive) Fabric Performance Fabric Performance Weight (oz/yd2) Burst Strength(psi) Pilling Conventional 6.1 104.8 5.0 Full Scale Enzyme 6.7 95.6 4.8 Interlock Conventional 6.7 89.5 5.0 Garment Scale Enzyme 6.4 75.6 5.0 Conventional 5.9 99.5 Full Scale Enzyme 6.4 92.4 Jersey Conventional 6.4 89.1 Garment Scale Enzyme 6.4 87.9 Color Measurement DEcmc  %STR‐WSUM  Interlock 0.22 97.46 Garment Scale Jersey 0.19 0 19 99.27 99 27 Interlock 0.15 101.59 Full Scale Jersey 0.17 100.31Enzymatic Preparation: Developments for Enhanced Performance & Sustainability 15
  • 16. Fabric Testing – Light Shade (Direct) Fabric Performance Fabric Performance Weight (oz/yd2) Burst Strength(psi) Pilling Conventional 5.8 111.1 5.0 Full Scale Enzyme 6.0 116.8 4.9 Interlock Conventional 6.7 91.6 5.0 Garment Scale Enzyme 6.7 67 99.8 99 8 4.9 49 Conventional 6.0 103.0 Full Scale Enzyme 6.0 107.0 Jersey Conventional Garment Scale Enzyme Color Measurement DEcmc %STR‐WSUM  Interlock 0.74 111.67 Garment Scale Jersey Interlock 2.33 82.42 Full Scale Jersey 2.89 80.97 Color measurement data from the garment scale and full scale trials  are inconsistent.    are inconsistentEnzymatic Preparation: Developments for Enhanced Performance & Sustainability 16
  • 17. Summary • Ability to combine processes to reduce Ability to combine processes to reduce  inputs • Performance – Instantaneous wetting – G d hi Good whiteness values l – Mote removal – Strength and weight maintained  – Light, medium and dark shades possibleEnzymatic Preparation: Developments for Enhanced Performance & Sustainability 17
  • 18. Full enzymatic textile processingEnzymatic Preparation: Developments for Enhanced Performance & Sustainability 18