Atmospheric plasma treatment for surface modification of fibre assemblies

Size: px

Start display at page:

Download "Atmospheric plasma treatment for surface modification of fibre assemblies"

Christopher Norton
5 years ago
Views:

1 Atmospheric plasma treatment for surface modification of fibre assemblies Aasim Ahmed Research Assistant Textile Research & Innovation Centre Textile Institute of Pakistan 1

2 Textile Institute of Pakistan 2

3 Industry Textile Research & Innovation Centre Academia 3

4 Postgraduate research management and supervision The Research Centre Advanced Materials Manufacturing research (by staff and postgrads) Collaborations 4

5 Research areas Electro-spinning Anthropometry Atmospheric plasma treatment 5

6 Plasma as the fourth state of matter 6

7 Plasma as the fourth state of matter 6

8 Plasma as the fourth state of matter 6

9 electrons electrons protons neutrons electrons 7

10 electrons electrons protons neutrons electrons 7

11 - electrons - electrons + protons neutrons - electrons 7

12 8

13 - p + n - - p + - n p + n - - p + n - p + n p + n - p + - n - p + - n - p + p + n n - - p + - n p + n p + n - p + n - p + n - 8

14 A dynamic mix of ions, electrons, neutrons, photons, free radicals, meta stable excited species and molecular and polymeric fragments 9

15 Plasma around us Sun Lightning Plasma television Tube light 10

16 Plasma around us Sun Lightning Plasma television Tube light 10

17 Plasma around us Sun Lightning Plasma television Tube light 10

18 Plasma around us Sun Lightning Plasma television Tube light 10

19 Cold plasma 11

20 Cold plasma p + - n p + - n - p n + p + n p + n - p n + p n p n + 11

21 Mechanism of plasmasubstrate interaction Etching Radical formation - Attachment of functional groups - Deposition/polymerization 12

22 Etching p n + 13

23 Etching p n + 13

24 Etching 13

25 Etching 13

26 Radical formation - H H H H H H C C C C C C 14

27 Radical formation H H H H H H * * C C C C C C 14

28 Radical formation H * H H H H H * C C C C C C 14

29 O Radical formation H * H H H H H * C C C C C C 14

30 O H * H H H H H * C C C C C C 14

31 OH H H H H H * C C C C C C 14

32 H OH H H H H C C C C C C 14

33 Attachment of functional group H OH H H H H C C C C C C 14

34 Deposition/ polymerization F F F F F F C C C C C C C C C C C C 15

35 Types of applications Functional finishes - Water repellent finish - Fire retardant finish - Conductive yarn Process improvement - Increased dyeing rate/exhaustion - Improved desizing 16

36 Possible outcomes Anti-felting/shrink-resistance of woollen fabrics. Hydrophilic enhancement for improving wetting and dyeing. Hydrophilic enhancement for improving adhesive bonding. Hydrophobic enhancement of water and oil-repellent textiles. Facilitating the removal of sizing agents. Electro-conductivity of textile yarns by surface plasma deposition. 17

37 Removing the surface hairiness in yarn. Scouring of cotton, viscose, polyester and nylon fabrics. Anti-bacterial fabrics by deposition of silver particles in the presence of plasma. Room-temperature sterilisation of medical textiles. Improved adhesion between textiles and rubber. Plasma-treated fabrics with high hydrophilic stability when stored in alkaline media. Graft plasma polymerisation for producing fabrics with laundry-durable oleophobic, hydrophobic and stain-resistant finishes. Atmospheric plasma-based graft polymerisation of textiles and nonwovens having different surface functional properties on the face and back side of the fabric. 18

38 A fabric which is coated with sizing agent inactive to plasma on one side and on the other side left as hydrophobic or hydrophilic after size removal, the resultant fabric having different functionality on its two sides. Flame-retardant coating using monomer vapour (halogen and/or phosphorus) in combination with nitrogen and/or silicone. Silicone coating of air-bag fabrics using crosslinked silicone (polyorganosiloxanes). Scouring of cotton, rayon, polyester fabrics using a nonpolymerisable gas (nitrogen, argon, ammonia, helium), followed by wet treatment for removing the impurities. Prevention of readily-occurring colour variation in textiles. Durable antistatic properties using PU-resin and plasma processing. 19

39 Treatment of cotton Desizing of PVA 20

40 Treatment of cotton Scouring 20

41 Treatment of cotton Scouring 20

42 Treatment of cotton Reactive dyeing 20

43 Treatment of cotton Reactive dyeing 20

44 Treatment of cotton Reactive dyeing 20

45 Treatment of cotton Water repellent finish 21

46 Treatment of cotton absorbent surface repellent surface increased absorbency increased repellency 22

47 Plasma at TRIC 23

48 Plasma at TRIC 23

49 Plasma at TRIC 23

50 Plasma at TRIC 23

51 Emerging technology 24

52 References Shishoo R., Plasma technologies for textiles, Woodhead Publishing Ltd., The Textile Institute, Cambridge, England (2007). Zaisheng Cai and Yiping Qiu et al., Effect of Atmospheric Plasma Treatment on Desizing of PVA on Cotton, Textile Research Journal, 73(8), (2003) D. Sun et al, Effect of low pressure plasma treatment on the scouring and dyeing of natural fabrics, Textile Res. J. 74(9), (2004). Hartwig Hocker, Plasma treatment of textile fibers, Pure Appl. Chem., Vol. 74, No. 3, pp ,

53 Contact Textile Research & Innovation Centre, Aasim Ahmed, Visit us at the Knowledge Village, in hall 2 at Textile Institute of Pakistan s stand. 26

Integrated fashion project for eco-sustainability products

Integrated fashion project for eco-sustainability products Daniele Spinelli Project manager at Next Technology Tecnotessile (Italy) chemtech@tecnotex.it April 4 th, 2017 3 rd RESET Seminar on New sustainable