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Research Journals >
Indian Journal of Fibre & Textile Research (IJFTR) >
IJFTR Vol.35 [2010] >
IJFTR Vol.35(2) [June 2010] >
| Title: | Kinetic and adsorption studies of Indian siris (Albizia lebbeck) natural dye on silk |
| Authors: | Vinod, K N
Puttaswamy
Gowda, K N Ninge
Sudhakar, R |
| Keywords: | Adsorption Albizia lebbeck
Silk
Kinetic study |
| Issue Date: | Jun-2010 |
| Publisher: | CSIR |
| Abstract: | Spectral techniques have been used to
identify and characterize the color constituent of the bark of Albizia lebbeck.
The dyeing potential and color fastness properties of the extract have been
evaluated on silk yarn. Pre-mordanting of the dye is found to be better than
post-mordanting, particularly with alum which gives higher color strength
values. The color
co-ordinates of dyed samples lie in the yellow-red quadrant of color space
diagram. The kinetic and adsorption studies on the dye uptake by silk yarn have
also been carried out. The positive standard affinity indicates a spontaneous
adsorption. During the dyeing process the enthalpy change is positive, indicating
an endothermic process with large negative entropy change. This implies an
uniform ordered distribution of dye on silk. The adsorption of the dye fits
into the Langmuir model of isotherm having high regression coefficient. These
findings indicate that the color extract of the bark of Albizia lebbeck serves as a potential natural dye for silk fabrics. |
| Page(s): | 159-163 |
| ISSN: | 0975-1025 (Online); 0971-0426 (Print) |
| Source: | IJFTR Vol.35(2) [June 2010]
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