CHAPTER 4
RESULTS AND DISCUSSION
4.1 Extraction using Different Solvents The grounded Ixora coccinea and Beta vulgaris plant samples were extracted using the following solvents: Acetone, ethanol, methanol and ethyl acetate. The absorbance was noted to select the best choice of solvent for extraction.
Inference
Acetone, ethanol and methanol showed higher values. But, the dye extracted from acetone and ethanol did not fix to the fabric properly. So, methanol was selected as solvent for extraction of the natural dyes from the plant materials.
4.2 Absorbance of the Dye Extracted from Ixora coccinea and Beta vulgaris The dyes extracted separately from the flowers of Ixora coccinea and fromthe peel of Beta vulgaris were examined to spectrophotometer, …show more content…
Even though other chemical mordants gave various shades, a pleasant aesthetic appeal was given only by alum. Similarly among the natural mordants, pomegranate rind extract produced better results than orange peel extract. Simultaneous-mordanting technique was identified to be the most effective for using natural mordants. Similarly post-mordanting technique was found to be effective for chemical mordants, which is similar to the results reported by Dhivya et al., 2013.
Table 4.2 Percentage Absorption of the Dye applied on the cotton fabric
Sample OD before dyeing OD after dyeing % dye absorption
Ixora coccinea
(w/o) 1.137 0.945 16.88
Ixora coccinea
(Nm) 1.578 0.632 59.94
Ixora coccinea
(Cm) 1.367 0.412 69.86
Beta vulgaris
(w/o) 0.175 0.124 29.14
Beta vulgaris
(Nm) 0.532 0.289 45.67
Beta vulgaris
(Cm) 0.513 0.306 …show more content…
Also the fabric dyed with extract from Beta vulgaris dye using pomegranate rind extract as natural mordant showed very good to excellent washing fastness. On exposure of these fabrics to sunlight, it was observed that the extract of Ixora coccinea along with pomegranate rind extract as natural mordant and alum as chemical mordant showed good light fastness.
4.5 Survey for finding out the most preferred shades of naturally dyed fabric On conducting a survey to find out the most preferred shade of naturally dyed fabric for various age groups it was found that, persons within the age group of 18-22 preferred ............. and persons within the age group of 25-28 preferred ........
Colour codes:
B1- Cotton fabric dyed using B. vulgaris (Without mordant)
B2- Cotton fabric dyed using B. vulgaris (Natural mordant)
B3- Cotton fabric dyed using B. vulgaris (Chemical
RESULTS AND DISCUSSION
4.1 Extraction using Different Solvents The grounded Ixora coccinea and Beta vulgaris plant samples were extracted using the following solvents: Acetone, ethanol, methanol and ethyl acetate. The absorbance was noted to select the best choice of solvent for extraction.
Inference
Acetone, ethanol and methanol showed higher values. But, the dye extracted from acetone and ethanol did not fix to the fabric properly. So, methanol was selected as solvent for extraction of the natural dyes from the plant materials.
4.2 Absorbance of the Dye Extracted from Ixora coccinea and Beta vulgaris The dyes extracted separately from the flowers of Ixora coccinea and fromthe peel of Beta vulgaris were examined to spectrophotometer, …show more content…
Even though other chemical mordants gave various shades, a pleasant aesthetic appeal was given only by alum. Similarly among the natural mordants, pomegranate rind extract produced better results than orange peel extract. Simultaneous-mordanting technique was identified to be the most effective for using natural mordants. Similarly post-mordanting technique was found to be effective for chemical mordants, which is similar to the results reported by Dhivya et al., 2013.
Table 4.2 Percentage Absorption of the Dye applied on the cotton fabric
Sample OD before dyeing OD after dyeing % dye absorption
Ixora coccinea
(w/o) 1.137 0.945 16.88
Ixora coccinea
(Nm) 1.578 0.632 59.94
Ixora coccinea
(Cm) 1.367 0.412 69.86
Beta vulgaris
(w/o) 0.175 0.124 29.14
Beta vulgaris
(Nm) 0.532 0.289 45.67
Beta vulgaris
(Cm) 0.513 0.306 …show more content…
Also the fabric dyed with extract from Beta vulgaris dye using pomegranate rind extract as natural mordant showed very good to excellent washing fastness. On exposure of these fabrics to sunlight, it was observed that the extract of Ixora coccinea along with pomegranate rind extract as natural mordant and alum as chemical mordant showed good light fastness.
4.5 Survey for finding out the most preferred shades of naturally dyed fabric On conducting a survey to find out the most preferred shade of naturally dyed fabric for various age groups it was found that, persons within the age group of 18-22 preferred ............. and persons within the age group of 25-28 preferred ........
Colour codes:
B1- Cotton fabric dyed using B. vulgaris (Without mordant)
B2- Cotton fabric dyed using B. vulgaris (Natural mordant)
B3- Cotton fabric dyed using B. vulgaris (Chemical