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Register a new userA Study of the possibility of improving the fastness of washing and rubbing of cotton fabrics dyed with direct dye by using microwave energy
دراسة إمكانية تحسين الثباتية للغسيل و الاحتكاك للأقمشة القطنية المصبوغة بالأصبغة المباشرة باستخدام طاقة الميكروويف
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في هذه الدراسة تمت صباغة عينات من القماش القطني بصبغة مباشرة باستخدام الطريقة التقليدية و كذلك باستخدام طاقة الميكروويف عند مستويات طاقة مختلفة حيث لوحظ فائدة الصباغة باستخدام طاقة الميكروويف في زيادة استنزاف الصبغة عند مستويات الطاقة المستخدمة مقارنة مع الطريقة التقليدية و كذلك تحسين الثباتية للغسيل و الاحتكاك الرطب بشكل جيد.
In this study, samples of cotton fabric were dyed using direct dye by the traditional method as well as using microwave energy at different energy levels. It was noted that the use of microwave energy increase the dye exhaustion at the used energy levels compared to the traditional method, as well as improving the fastness to washing and wet rubbing.
References used
NASR S, 2008- Dyeing Technology Theoretical Part. Al - Baath University Publications, First Edition, Homs, 367. In Arabic
NASR S, SAFFOUR Z, OTHMAN D, 2010- Dyeing technology practical part. . Al - Baath University Publications, First Edition, Homs, 127. In Arabic
AIQIN Hou , XIAOIUN Wang, LIANGHUA Wu, 2008- Effect of microwave irradiation on the physical properties and morphological structures of cotton cellulose, Carbohydrate Polymers, 74, 934–937
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A reactive dye was applied to woven cotton fabric then washed-off
using water and three alkaline agents (ammonium hydroxide,
sodium bicarbonate, sodium hydroxide). The aim of washing-off is
to eliminate of dyes no fixed on fabric to avoid its diss
olution
during washing what reduces fastness to washing.
The duration and temperature of wash-off were fixed, and the
concentrations of alkaline agents used were varied, and the effects
of these variables on the wash fastness of the dyeing were
determined.
There was little difference between the three alkaline agents, in
terms of the level of wash-fastness achieved. The best result was
with sodium bicarbonate and sodium hydroxide
In this study , a dyeing process of vat dyes was carried out for
cotton fabrics (100%) at an optimal conditions for material's
concentrations (sodium hydrosolphite , oxidization agent
,alkaline agent) to obtained a reference sample using for
comp
arison with another samples which dyeing at difference
concentrations of materials and different oxidization agent and
conditions of works ( work at close condition or open) , and it
was observed the decrease of fastness's values for the tester
samples against dry and wet rubbing opposite of reference
sample and that due to the difference of concentration of
reducing agent and the weakness of bonds between the dye
and textile because of the difference of oxidization conditions.
In this study a process of dying cotton fabrics 100% was carried out
by direct dye Solophynel GLE Yellow and after that it was treated by
cationic softening agent for improving the fastness to washing and
rubbing for the fabrics which were dyed by
direct dyes .we increased
the molecular weight after absorbing it on the cellulosic fiber and the
result is decreasing the solubility of the dye in water and increasing
the fastness to washing and rubbing . and after that we carried out the washing and friction tests and evaluated the results.
This research is based on the use of different types of mineral
mordants, mineral salts, in the dyeing process using the aqueous
extract of eucalyptus leaves. The used mordants are aluminum
potassium sulphate, copper sulphate, iron sulphate and mi
xtures of
these mordants. Study the effect of these mordants on the dyeing
process.
This study aims to shed light upon bleaching process, study the
influence of each substance during the process and the best time for
bleaching in addition to clear up the effect of water.
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