This document summarizes the key differences between viscose and lyocell fibers. Viscose is a regenerated cellulose fiber made from wood pulp that was discovered in 1891 and commercially produced starting in 1905. Lyocell is a type of rayon made through a solvent-spinning process using cellulose dissolved in N-methylmorpholine N-oxide, discovered in 1936 and first commercially produced in 1992 under the brand name Tencel. The document outlines the production processes, chemical properties, physical properties, and applications of each fiber type. Viscose is commonly used in clothing, home textiles, and hygiene products, while lyocell is used for apparel, upholstery, filters, and medical text

1. Monday, 07 Aug, 2017
Presented by
Md. Shaon Mollah 161-23-4540
Sourov Chanda Apu 161-23-4553
Atanu Biswas 161-23-4607
Md. Rokibul Hasan 161-23-4556
Taufik Jamil Buyan 161-23-4598
Mokaddimul Hossain 161-23-4590
Difference Between Viscose and Lyocell Fiber
Department of Textile Engineering
Daffodil International University
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Submitted by
Professor Dr. Engr. Md. Saifur Rahman

2. Contain
 Basic Information of Viscose and Lyocell Fiber_by Shaon
 Definition of Viscose and Lyocell Fiber_by Sourav
 Production Process of Viscose and Lyocell Fiber_by Atanu
 Chemical Properties of Viscose and Lyocell Fiber_by Sohag
 Physical Properties of Viscose and Lyocell Fiber_by Jamil
 Application and End uses of Viscose and Lyocell Fiber_by Mokaddimul
Source
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3. Basic Information of Viscose and Lyocell Fiber
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Charles Frederick Cross Edward John Bevan

4.  Natural Polymer, Viscose from wood pulp
 Generally Known as Viscose in Europe and Rayon in North America
 Discovered 1891
 Commercial production started in 1905
 Regenerated cellulosic fibers
Viscose
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5. Lyocell
Lyocell is an innovative broad name
given to a cellulosic fiber, which is
produced under an environmentally
friendly process by dissolving cellulose
in the Tertiary Amine Oxide N-
methylmorpholine-N-oxide (NMMO).
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6.  Natural Polymer
 Regenerated cellulosic fibers
 Discovered 1936, in England
 Commercial production started in 1992, by Courtaulds Ltd.
 Tencel is the brand name of Lyocell
Lyocell
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7. Viscose is a fiber of regenerated
cellulose; it is structurally similar
to cotton but may be produced
from a variety of plants such as
soy, bamboo, and sugar cane.
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Definition of Viscose and Lyocell Fiber

8. Lyocell is a form of rayon
which consists of cellulose fibre
made from dissolving pulp
using dry jet-wet spinning. It
was developed beginning in
1972 by a team at the now
defunct American Enka fibers
facility at Enka, North Carolina.
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9. Lyocell
Production Process of Viscose and Lyocell Fiber
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Viscose

10. Chemical Properties of Viscose and Lyocell Fiber
Viscose fiber: Viscose is a regenerated cellulose fiber. It is a manmade fiber but
it shows both the properties of natural fiber and synthetic fiber.
Lyocell fiber: Lyocell is a form of rayon which consists of cellulose fibre made
from dissolving pulp (bleached wood pulp).
N-methyelmorpholine N-oxide
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11. Chemical Properties of Viscose and Lyocell Fiber
Chemical properties Viscose Lyocell
1)Acids Damaged by strong acid Also damaged
2)Basic Good resistance damaged by strong alkali
3) Effect of bleaching damaged by oxidizing agents Also damaged
4) Organic solvent good resistance also resistance
5) Protection ability against mildew not good resistance to mildew and silverfish
6) protection ability against insects affected by insects not affected by insects
7) Dyes direct, vat and sulphur dyes mostly reactive dyes are used
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12. Viscose fiber lyocell fiber
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13. Physical Properties of Viscose and Lyocell Fiber
A physical property is any property that is measurable, whose value
describes a state of a physical system.
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14. Physical properties Viscose Lyocell
1.Strength (cN/Tex) 24-26 Strength is better then
viscose fiber. >37
2.Biodigradable Biodegradable Both are biodegradable.
3.Moisture regain(%) 13 11
4.Absorbancy Lower. Higher absorbance
than viscose.
5.Drapes well Less than lyocell Better drape ability
than viscose.
6.Wet and dry tenacity
ratio %
82-84 50-52
7.Elongnation (%) 19-21 Lyocell has less of
viscose.12-15.
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15. Application and End uses of Viscose and Lyocell Fiber
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16. # Viscose is a synonym for Rayon.
Rayon is typically has an elevated luster quality giving it a brilliant
gloss.
Mainly, Rayon fibers are used in apparel industry such as Aloha
shirts, blouse, dresses, jackets, scarves, suits, ties, hats & socks…,
End use of Viscose Fiber
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17. End use of Viscose Fiber
Some rayon fibers are for filling in Zippo lighters, furnishings
including bedspreads, bed sheets, blankets, window covers,
upholstery and slipcovers..,
For industrial purposes such as medical surgery products, non-
woven items, and some other uses like diapers, towels, feminine
hygiene products, etc.
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18. End use of lyocell Fiber
Mattress with lyocell as cover
material
The label of a coat containing
Tencel
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19. End use of lyocell Fiber
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20. End use of lyocell Fiber
#Trade name is Tencel®
Reusable woven materials, fashion fabrics, soft denims, shirts.
Upholstery, casual wear, filters, printers blankets.
Medical dresses, conveyer belts for strength & softness, botanic
Tencel bed, etc.
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21. Source
Handbook of Textile Fibers by JG Cook 2009
Google Classroom pptx slide, Module 1, 7, by Prof Dr Md Saifur Rahman, Daffodil International University
https://www.undershirts.co.uk/blogs/research/viscose-vs-modal-vs-lyocell
http://textilelearner.blogspot.com/2012/03/rayon-fiber-characteristics-of-rayon.html
http://textilelearner.blogspot.com/2014/03/an-overview-of-processing-and.html
http://www.indiantextilejournal.com/articles/FAdetails.asp?id=4822
https://www.slideshare.net/sawpnobazz/lyocell-fiber-64768808
https://www.slideshare.net/namit129/lyocell-final-ppt-28-1013
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22. Thank You
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