full2010.pdf - page 1209

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Abstract
The aim of this study was to develop natural dyes from Yellow Silk Cotton Flower ( Cochlospermum
religium (Mart.&Schrank) Plig.) by extraction of color from Yellow Silk Cotton Flower petal. The experiment, in
completely randomized design with 8 treatments 4 replications and 5 pieces per replication, to investigate the
effects of dye solution of petals of pre-blooming flowers and blooming flowers as the condition : fresh petal,
steamed petals, sun dried petals and oven dried petals. Extraction of cotton dyeing was prepared in the ratio of
Yellow Silk Cotton Flower to water of 1g :100 cm 3 at the temperature of 98.5 OC for 30 minutes. Observation on
parameters were recorded in terms of pH of dye solution , weight, length, width, thickness and changes color (L*,
a*,b*) of fabric before and after dyeing. The results revealed that pH of dyed extracted before and after dying was
4.14-5.76. Length of cotton fabric dyed with oven dried petals of blooming flowers extracted provided
significantly different (13.69 cm) and with steamed petals of pre-blooming flowers tended to show the shorter
(13.24 cm). Cotton fabric dyed with oven dried petals of blooming flowers and fresh petals of pre-blooming
flower were the significant highest b* (45.06 and 44.05 respectively). The colour changes showed that the staining
yellow color was better. Moreover, the value of color different (dE*) after the dyeing of cotton was as same as b*.
According to the result of this study, the extraction of oven dried petals of blooming flowers tended to be more
interpretative indicated for cotton dyeing.
Keywords: Dyeing , Yellow silk cotton flower, Extract
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