Description about diiferent types of Dyes ?

 
Direct Dyes Direct Dyes are molecules that adhere to the fabric molecules without help from other chemicals. In this experiment we will use a dye known as malachite green to illustrate this process. Mordant Dyes Mordant Dyes are dyes that do not adhere to fabrics directly. These need a chemical intermediate, known as a mordant, to attach themselves to the fabric. In this process, the mordant is applied to the fabric and then the dye is applied, which then bonds to the mordant. In this experiment, we will use tannic acid as a mordant to dye a sample of cotton with malachite green dye. Developed Dyes Developed Dyes are those where the dye-forming chemical reaction is carried out on the fabric. This process is commonly done with diazo dyes which are characterized by containing a -N=N- structure in the molecule. In this experiment, we will use a dye known as para red which will be formed on the cotton fabric from the reaction between p-nitroaniline and 2-naphthol. Vat Dyes Vat Dyes are insoluble in their colored form. They are reduced by another chemical and converted to a soluble form. The reduced dye is applied to the fabric, and then exposed to the air which oxidizes he dye back to its colored form. In this experiment indigo dye will be used to dye a sample of cotton fabric. Indigo is the dye used to make blue jeans blue.

 

Direct Dyes

Direct Dyes are molecules that adhere to the fabric molecules without help from other chemicals. In this
experiment we will use a dye known as malachite green to illustrate this process.

Direct Dyes Direct Dyes are molecules that adhere to the fabric molecules without help from other chemicals. In this experiment we will use a dye known as malachite green to illustrate this process. Mordant Dyes Mordant Dyes are dyes that do not adhere to fabrics directly. These need a chemical intermediate, known as a mordant, to attach themselves to the fabric. In this process, the mordant is applied to the fabric and then the dye is applied, which then bonds to the mordant. In this experiment, we will use tannic acid as a mordant to dye a sample of cotton with malachite green dye. Developed Dyes Developed Dyes are those where the dye-forming chemical reaction is carried out on the fabric. This process is commonly done with diazo dyes which are characterized by containing a -N=N- structure in the molecule. In this experiment, we will use a dye known as para red which will be formed on the cotton fabric from the reaction between p-nitroaniline and 2-naphthol. Vat Dyes Vat Dyes are insoluble in their colored form. They are reduced by another chemical and converted to a soluble form. The reduced dye is applied to the fabric, and then exposed to the air which oxidizes he dye back to its colored form. In this experiment indigo dye will be used to dye a sample of cotton fabric. Indigo is the dye used to make blue jeans blue.

 

 

Mordant Dyes

Mordant Dyes are dyes that do not adhere to fabrics directly. These need a chemical intermediate, known as a mordant, to attach themselves to the fabric. In this process, the mordant is applied to the fabric and then the dye is applied, which then bonds to the mordant. In this experiment, we will use tannic acid as a mordant to dye a sample of cotton with malachite green dye.



Developed Dyes

Developed Dyes are those where the dye-forming chemical reaction is carried out on the fabric. This process is commonly done with diazo dyes which are characterized by containing a -N=N- structure in the molecule. In this experiment, we will use a dye known as para red which will be formed on the cotton fabric from the reaction between p-nitroaniline and 2-naphthol.


Direct Dyes Direct Dyes are molecules that adhere to the fabric molecules without help from other chemicals. In this experiment we will use a dye known as malachite green to illustrate this process. Mordant Dyes Mordant Dyes are dyes that do not adhere to fabrics directly. These need a chemical intermediate, known as a mordant, to attach themselves to the fabric. In this process, the mordant is applied to the fabric and then the dye is applied, which then bonds to the mordant. In this experiment, we will use tannic acid as a mordant to dye a sample of cotton with malachite green dye. Developed Dyes Developed Dyes are those where the dye-forming chemical reaction is carried out on the fabric. This process is commonly done with diazo dyes which are characterized by containing a -N=N- structure in the molecule. In this experiment, we will use a dye known as para red which will be formed on the cotton fabric from the reaction between p-nitroaniline and 2-naphthol. Vat Dyes Vat Dyes are insoluble in their colored form. They are reduced by another chemical and converted to a soluble form. The reduced dye is applied to the fabric, and then exposed to the air which oxidizes he dye back to its colored form. In this experiment indigo dye will be used to dye a sample of cotton fabric. Indigo is the dye used to make blue jeans blue.


Vat Dyes

Vat Dyes are insoluble in their colored form. They are reduced by another chemical and converted to a soluble form.
The reduced dye is applied to the fabric, and then exposed to the air which oxidizes he dye back to its colored form.
In this experiment indigo dye will be used to dye a sample of cotton fabric. Indigo is the dye used to make blue jeans blue.

Direct Dyes Direct Dyes are molecules that adhere to the fabric molecules without help from other chemicals. In this experiment we will use a dye known as malachite green to illustrate this process. Mordant Dyes Mordant Dyes are dyes that do not adhere to fabrics directly. These need a chemical intermediate, known as a mordant, to attach themselves to the fabric. In this process, the mordant is applied to the fabric and then the dye is applied, which then bonds to the mordant. In this experiment, we will use tannic acid as a mordant to dye a sample of cotton with malachite green dye. Developed Dyes Developed Dyes are those where the dye-forming chemical reaction is carried out on the fabric. This process is commonly done with diazo dyes which are characterized by containing a -N=N- structure in the molecule. In this experiment, we will use a dye known as para red which will be formed on the cotton fabric from the reaction between p-nitroaniline and 2-naphthol. Vat Dyes Vat Dyes are insoluble in their colored form. They are reduced by another chemical and converted to a soluble form. The reduced dye is applied to the fabric, and then exposed to the air which oxidizes he dye back to its colored form. In this experiment indigo dye will be used to dye a sample of cotton fabric. Indigo is the dye used to make blue jeans blue.











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