1. DYEING OF TEXTILES WITH
NATURAL DYES
Let’s shake hand with Nature…
Mr. MURALIDHAR PATHAK
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2. INTRODUCTION
Non-substantive coloring matter.
Derived from the natural sources like plants, animal
and minerals.
Applied on textiles by the help of mordants.
Transition metal ions usually have strong co-
ordinating power.
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3. ADVANTAGES OF NATURAL DYES
Soft, lustrous and soothing to the human eye.
Range of colors by mix and match system.
Produce rare color ideas.
Natural dyes are usually renewable
No disposal problem.
Potential to earn carbon credit.
Non-hazardous to human health.
Depth of some of the natural dyes are enhanced with age
Bleed but do not stain other fabrics
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4. DISADVANTAGES OF NATURAL DYES
Difficult to reproduce shades.
Difficult to standardize a recipe
Low color yield
Lack of availability of precise technical knowledge on
extraction and dyeing techniques.
Dyed textile may change color when exposed to the
sun, sweat and air.
Nearly all-natural dyes with a few exceptions require the
use of mordants to fix them on to the textile substrate.
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5. CLASSIFICATION
Natural dyes can be classified in a number of
ways.
1. Substantive Dyes & Adjective Dyes
2. Monogenetic Dyes & Polygenetic Dyes
3. On the basis of hues Red, Blue, Yellow & Black.
4. On the basis of origin vegetable, mineral and animal
origin.
5. Chemical constitution.
6. Method of application
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6. TYPES OF MORDANT
1) Metallic mordants
2) Brightening mordants
3) Dulling mordants
4) Tannins
5) Oils type mordants
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7. Method of application
1.Pre-mordanting
2.Simultaneous mordanting
3.Post-mordanting
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