Embed Size (px)
Citation preview
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Atmospheric plasma treatment for surface modification of fibre assemblies
Aasim AhmedResearch Assistant
Textile Research & Innovation CentreTextile Institute of Pakistan
1
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Textile Institute of Pakistan
2
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Textile Research & Innovation Centre
Industry
Academia
3
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Collaborations
Postgraduate research
management and supervision
The Research
Centre
Advanced Materials
Manufacturing research
(by staff and postgrads)
4
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Research areas
• Electro-spinning
• Anthropometry
• Atmospheric plasma treatment
5
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Plasma as the fourth state of matter
6
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Plasma as the fourth state of matter
6
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Plasma as the fourth state of matter
6
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
electronselectrons
electrons
protons
neutrons
7
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
electronselectrons
electrons
protons
neutrons
7
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
electrons
electrons
electrons
protons
neutrons+
-
-
-
7
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
8
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
pn
+-
pn
+
pn
+
pn
+
pn
+
pn
+
pn
+
pn
+
pn
+
pn
+
pn
+
pn
+
pn
+
pn
+
pn
+
- -
-
-
- -
-
--
-
-
-
- -
-
-
-
-
-
-
--
-
8
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
A dynamic mix of ions, electrons, neutrons, photons, free radicals, meta stable excited
species and molecular and polymeric fragments
9
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Plasma around us
• Sun
• Lightning
• Plasma television
• Tube light
10
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Plasma around us
• Sun
• Lightning
• Plasma television
• Tube light
10
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Plasma around us
• Sun
• Lightning
• Plasma television
• Tube light
10
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Plasma around us
• Sun
• Lightning
• Plasma television
• Tube light
10
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Cold plasma
11
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Cold plasma
pn
+
pn
+
pn
+ pn
+
pn
+
pn
+
pn
+
pn
+-
- -
-
--
-
-
-
-
-
-
-
-
11
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Mechanism of plasma-substrate interaction
• Etching
• Radical formation
- Attachment of functional groups- Deposition/polymerization
12
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
pn
+
Etching
13
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
pn
+
Etching
13
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Etching
13
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Etching
13
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Radical formation
H
C C C C C CC C
H H H H H
-
14
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
*
Radical formation
H
C C C C C CC C
H H H H H
*
14
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
*
Radical formation
H
C C C C C CC C
H
H
H H H
*
14
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
*
Radical formation
H
C C C C C CC C
H
H
H H H
*
O
14
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
*
H
C C C C C CC C
H
H
H H H
*
O
14
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
*
H
C C C C C CC C
H H H H
OH
14
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
H
C C C C C CC C
H H H HOH
14
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
H
C C C C C CC C
H H H HOH
Attachment of functional group
14
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Deposition/polymerization
C C C C C CC C
CC C C C C C C
F F F F F F
15
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Types of applications
• Functional finishes
- Water repellent finish- Fire retardant finish- Conductive yarn
• Process improvement
- Increased dyeing rate/exhaustion- Improved desizing
16
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
• 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.
Possible outcomes
17
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
• 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
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
• 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 non-polymerisable 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
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Treatment of cotton
Desizing of PVA
20
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Treatment of cottonScouring
20
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Treatment of cottonScouring
20
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Treatment of cottonReactive dyeing
20
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Treatment of cottonReactive dyeing
20
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Treatment of cottonReactive dyeing
20
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Treatment of cottonWater repellent finish
21
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Treatment of cotton
absorbent surface
increased absorbency
repellent surface
increased repellency
22
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Plasma at TRIC
23
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Plasma at TRIC
23
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Plasma at TRIC
23
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Plasma at TRIC
23
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Emerging technology
24
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
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), 670-674 (2003)
• D. Sun et al, Effect of low pressure plasma treatment on the scouring and dyeing of natural fabrics, Textile Res. J. 74(9), 751-756 (2004).
• Hartwig Hocker, Plasma treatment of textile fibers, Pure Appl. Chem., Vol. 74, No. 3, pp. 423–427, 2002.
25
T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n
Contact
• Textile Research & Innovation Centre, [email protected]
• Aasim Ahmed, [email protected]
• Visit us at the ‘Knowledge Village,’ in hall 2 at Textile Institute of Pakistan’s stand.
26
