Turmeric Dyeing of Silk Fabrics

IntroductionTime for dye extraction:
In recent years the usage of natural dyes and colorsIn order to extract the dye, aqueous mode is utilized.
for fabric dyeing has witnessed its revival due toThe dye is examined for its evenness and color
hazardous experience due to effects of syntheticshade by quality control supervisors before applying
dyes and chemicals. The natural dyes areto the fabric. The turmeric powder is which is one
eco-friendly, harmless and non-toxic in nature. Also,gram is diluted with 100 ml of water. Four such
the usage of renewable sources of energy in textilesolutions are prepared. Each one is boiled for four
and apparel industry has been increased due to manydifferent time period i.e. 20, 40, 60 and 80 minutes in
advantages associated with it. Solar energy usage fora solar cooker.
dyeing purpose is a cost effective method. In hotTime taken for dyeing:
countries like India, the sun shines bright for 60% ofThe optimum dye solution is utilized to standardize
the day, using solar energy to dye silk fabric withthe dye concentration. The dyes undergo the
turmeric dye is cheap and environment friendlyprocedure of absorption in the solar cooker time
method.ranging from 30-180 minutes. The absorption power
Things requiredof the silk fabric determines the dyeing time
There are certain things required in order to dye theConcentration of acid:
silk with turmeric dye which are listed as follows-The two acids used for dilution are acetic and nitric
turmeric plant stems, raw silk fabric yarn, diluted nitricacid. From each of diluted acid, 20 ml is mixed into
& acetic acid and mordants like alum &the dye bath. The dyes are examined for their
stannous chloride.absorption power. This examination is done visually.
Before applying the dye to the fabric the process ofMordants usage:
removing sericin from silk is done. Here the silk fabricThe mordants discussed earlier Alum and Stannous
is first treated with ezee kept in it for approximatelychloride are used here. The process of dyeing and
one hour then washed and dried. This whole processmordanting are done together. Both these mordants
is known as degumming.are mixed with water which results into optimized
Enhancing of dyeing parametersmordants.
To dye the silk fabric with turmeric dyes certainProcedure for mordanting:
procedures are to be followed. The dye dilution, theThere are two methods in mordanting premordanting
time taken for its extraction, time for dyeing, amountand postmordanting. The pre-requisite of this process
of mordant used and mordanting process are to beis to keep other things like dyeing time, acid
taken care of to result into turmeric dyed silk fabricsconcentration, etc. steady. By looking at the dyes the
which is evenly dyed with no color patches ormethod of mordanting i.e. pre or postmordanting to
differences in shade.be used is decided.
Not only yellow color is produced through dyeing withThey are also categorized by the generations as
turmeric dyeing but also many other colors arethey were produced in the different years and
produced when turmeric dye is mixed with otherknown as first generation, second generation, third
colors, like - orange, green, blue color with addition ofgeneration or fourth generation fibres. This is given in
indigo and red color with addition of safflowers andthe below chart:
mango rind.View Full Article
You might think how both red and yellow colors are- Leading B2B Portal and Marketplace of Global
produced through turmeric dye in its original form, theTextile, Apparel Fashion & Retail Industry,
answer lies in the type of liquid used forProvides complete information on global Textile Dyes
concentration. When the solution is prepared in acidic& Chemical industries through Products, Articles,
liquid it would produce yellow dye and when alkaliNews, Jobs and Events.
liquid is used it would produce red dye.