Plasma can be an interesting alternative from conventional process. Because it is operator friendly and environment friendly, done in dry atmosphere and completely controllable.so every country should use plasma technology in textile as soon as possible.

1. Shahid Abdur Rab Serniabat Textile Engineering College,
Barisal

2. Recent Re-searchandDevelopment inTextile Wet
Processing
Presented By
Debubrata Modak
ID: B20141043
Submitted to
Our Honourable Teacher
Pronoy Halder

3. Outline…
What is Textile wet processing?
What is R & D in wet processing?
Why R & D?
Recently developed technology in wet processing?
Plasma technology in textile?
What is plasma?
Why plasma?
Classification of plasma?
Parameter of plasma treatment?
How dose plasma works?
Result of plasma treatment?
Aim of plasma technology?
Application of plasma technology in wet processing?
Advantage of plasma technology?
Drawback of plasma technology?
Conclusion

4. What is Textile wet processing?
Textile wet processing is the process where
textile materials is treated with water or
various types of chemical for removing
impurities, increasing strength & luster,
coloration and finishing of textile materials.
Example,
Preparatory process
Dyeing process
Printing process
Finishing process

5. What is R & D in wet processing?
“Research & development is a process of
developing old technology and communicate with
the new technology”
I mean, development of machinery & working
process and placement of new technology to
reduce human efforts.

6. Why R & D?
• To Communicate with new technology.
• To predict about future challenges and solutions.
• To reduce dependency.
• To reduce effect on environmental elements.
• To improve functionality.

7. Recently developed technology in wet processing?
• Plasma Technology.
• Ultrasonic Assisted Wet Processing.
• Digital printing Technology.
• Nano Technology.
• Bio-Technology.
• Microwaves Technology
• Electrochemical dyeing
• Waterless dyeing with Supercritical Carbon Dioxide (scCO2)
• Ozone technology
• Foam finishing Technology

8. Plasma technology in textile
• Since the early 1980s, many research work has been going on
in many laboratories about low pressure plasma.
• Next 15 year, research has done continuously.
• Despite of all the great benefits, research has done slowly.

9. What is plasma?
Plasma is often called the "Fourth State of
Matter,"
Plasma is an ionized gas consist of positive
ions and free electrons proportionately.
A gas becomes a plasma with the addition of
high heat and high pressure

10. Classification of plasma
• High-temperature plasma ( about100 million °C)
• Low-temperature ( ≈ near 50 °C - used for textile applications)
• Low pressure plasma
• Atmospheric pressure plasma

11. Why plasma?
Plasma processing Traditional wet chemistry
Medium Treatment by excited gas phase Water-based
Energy consumption Low High
Water consumption Negligible High
Reaction type Complex & multifunctional Simpler, well established
Environmental effect Eco- friendly polluting
Potential for new
process
Great potential, field in state of
rapid development
Very low, technology static

12. Plasma Parameter
• Primary parameters:
Gas type
Resident type
• Secondary parameters:
Gas flow
Frequency
Power
Pressure
•Ambient temperature: 30-40 °C
•Gasses:O2,N2,Ar,He,C,F,H2,CH4…..
•Frequency type: KHz, MHz, GHz

13. How dose plasma works?
1. Firstly, Gases are heated and charged
to plasma state
2.Then fabric is placed between two
electrode.
3.After this, gases are directed on the
sample piece in the form of high velocity
stream.

14. Result of plasma treatment
Ultraviolet Protection Factor (UPF) Flame retardant

15. Result of plasma treatment
Process
parameters
Samples 1
(Conventional
method)
Samples 2
(Plasma)
Ag nano 150ppm 100ppm
TiO2/SiO2 1.5% 1%
Sample Antibacteria
l properties
%
Before wash
Antibacteria
l properties
%
After 20
wash
control
cotton
No
reduction
No
reduction
TiO2-.5% 99 92
TiO2-1% 98 95
TiO2-1.5% 99 98
Antibacterial30% less chemical used

16. Application of plasma technology in wet processing

17. Aim of Plasma Technology
Multi-
Function
Flame
Retardant
Anti-statical
Antibacterial
Hydrophilic &
Hydrophobic
Crease-
resistance
UV
protective

18. Advantage of plasma technology
• It increases abrasion resistance of cotton materials.
• It increases dyeing speed.
• It gives anti-dirt properties.
• It increases hydro-philicity of fabrics.
• Increase color & wash fastness.

19. Drawback of plasma technology
Plasma treatment, however, does have certain drawbacks.
• This treatment produce harmful gasses such as
ozone and nitrogen oxides during operation.
• High cost of the plasma device.
• Less availability.
• Requires skilled operator

20. Conclusion
Plasma can be an interesting alternative from
conventional process. Because it is operator
friendly and environment friendly, done in dry
atmosphere and completely controllable.so
every country should use plasma technology in
textile as soon as possible.

21. Thank you

22. Any Question