Yaa Dissimilar Types Of Dyestuffs Inwards Relation To The Fiber Substrate

Different Types of Dyestuffs inwards Relation to the Fiber Substrate

Rana Sohel
Executive Engineer
Sunman Textile Mills Ltd. Chittagong
Cell: +8801912-420118
Email: rsohel07tex@gmail.com

Dyestuff:
The wishing to color textiles is an onetime every bit spinning together with weaving. Natural coloring materials bring been used for thousands of years; mineral pigments such every bit yellowish together with ruby ochre, cinnabar; vegetable dyes such every bit indigo, litmus, logwood, madder, saffron; creature dyes such every bit cochineal, Tyrian purple. Synthetic dyes were get-go produced inwards the xix century together with bring at 1 time most completely replaced the natural colors. Environmental together with production security aspects are currently really important.

Various Dyestuff

With the exception of pigment/binder systems the type of dyestuff has to survive chosen to conform the fiber substrate, because the formation of a physical or chemic bond betwixt dye together with fiber depends on the chemic together with physical structures of both dye together with fiber. Influenza A virus subtype H5N1 broad spectrum of colors is available inwards countless shades together with a broad attain of fastness for the dissimilar fibre types together with blends.

Different types of Dyestuffs inwards relation to the fiber substrate:

• fastness properties. 

• Disperse Dye: Applicable for polyester, nylon, acetate. It is H2O inwards soluble; applied' from dispersions; diffuse into the fibre at high temperature. It has likewise skilful fastness properties. 

• Vat Dye: Applicable for cotton, linen, viscose. The insoluble dyestuff is made soluble inwards a reducing vat thus that it tin diffuse into the fibre. After diffusion is complete, it is together with thus re-oxidised into its inwards soluble form. It has high fastness to washing, chlorine, boiling, light, weather, rubbing together with perspiration. 

• Direct Dye: Applicable for cotton, linen, viscose, silk. Simple diffusion into the fibre, from aqueous solution. It has relatively misfortunate fastness properties to light, washing together with perspiration. These fastness properties tin survive improved yesteryear subsequently treatment. 

• Basic Dye: It is suitable for acrylic fibres (other fibres yesteryear mordanting). It reacts amongst acidic groups, or mordants (a chemic which tin react or complex amongst a chromophore to shape an insoluble colour) inwards the fibre. It has skilful fastness properties on acrylic fibres. 

• Acid Dye: Applicable for wool, silk, nylon. Applied from an acidic dyebath. The fastness properties of this dye-stuff depends on the fibre type.

There are likewise another dyestuffs such every bit sulphur, azoic, metallic complex, chrome dyes etc.

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