Friday, January 30, 2009
Wednesday, January 28, 2009
Laboratory Continuos Dyeing Range
LABORATORY PAD - STEAM WITH WASHING RANGELaboratory Pad-Steam with Washing Range is specially developed for lab scale continuous PadSteam and Washing process in A single pass for application of vat, reactive and other dyestuff on cellulosic fabric by pad-dry-pad-steam-washing process.
Process:Pad Colour DIP-NIP (Vertical Padding Mangle) Pre-dryer (Infra Heating) - Chemical DIP - Squeezing - Steaming (Atmospheric pressure at 102°C.) - Cold Wash - Hot Wash - Cold Wash - Soaping - Hot Wash - Cold Wash.
SEE FULL ARTICLE CLICK HERE
Process:Pad Colour DIP-NIP (Vertical Padding Mangle) Pre-dryer (Infra Heating) - Chemical DIP - Squeezing - Steaming (Atmospheric pressure at 102°C.) - Cold Wash - Hot Wash - Cold Wash - Soaping - Hot Wash - Cold Wash.
SEE FULL ARTICLE CLICK HERE
Tuesday, January 27, 2009
BLACK BODY
In physics, a black body is an object that absorbs all electromagnetic radiation that falls on it. No electromagnetic radiation passes through it and none is reflected. Because no light (visible electromagnetic radiation) is reflected or transmitted, the object appears black when it is cold.
If the black body is hot, these properties make it an ideal source of thermal radiation. If a perfect black body at a certain temperature is surrounded by other objects in thermal equilibrium at the.....
See full article click here
Monday, January 26, 2009
Pollution Prevention Through Automation in Textile Dyeing and Printing
Pollution Prevention Through Automation in Textile Dyeing and Printing
Dr. Robert Hirschler
SENAI, CETIQT,Brasil
See full Article clik here
Dr. Robert Hirschler
SENAI, CETIQT,Brasil
See full Article clik here
Sunday, January 25, 2009
Friday, January 23, 2009
Tuesday, January 20, 2009
Dye–surfactant interaction in aqueous solutions
Dye–surfactant interaction in aqueous solutions
Ma1gorzata Bielska, Anna Sobczyn´ ska, Krystyna Prochaska*
Institute of Chemical Technology and Engineering, Poznan University of Technology, Pl. M. Sklodowskiej-Curie 2, 60-965 Poznan, Poland
a r t i c l e i n f o
Article history:
Received 28 February 2008
Received in revised form 30 May 2008
Accepted 30 May 2008
Available online 7 June 2008
Keywords:
Dye–surfactant interaction
Ionic surfactants
Anionic dyes
Cationic dyes
a b s t r a c t
The interaction of four ionic dyes, C.I. Mordant Black 11, C.I. Mordant Black 17, C.I. Direct Yellow 50 and C.I.
Basic Blue 9, with cationic and anionic surfactants was studied by absorption spectroscopy. The dyes
interact strongly with oppositely charged surfactant in the premicellar concentration range and the
appropriate values of constant of dye–surfactant complex formation were estimated. In addition, the
most important factor affecting the number of dye particles solubilized in the surfactant micelle was its
molecular mass.
2008 Elsevier Ltd. All rights reserve
DOWNLOAD FULL RESERACH PAPER
Ma1gorzata Bielska, Anna Sobczyn´ ska, Krystyna Prochaska*
Institute of Chemical Technology and Engineering, Poznan University of Technology, Pl. M. Sklodowskiej-Curie 2, 60-965 Poznan, Poland
a r t i c l e i n f o
Article history:
Received 28 February 2008
Received in revised form 30 May 2008
Accepted 30 May 2008
Available online 7 June 2008
Keywords:
Dye–surfactant interaction
Ionic surfactants
Anionic dyes
Cationic dyes
a b s t r a c t
The interaction of four ionic dyes, C.I. Mordant Black 11, C.I. Mordant Black 17, C.I. Direct Yellow 50 and C.I.
Basic Blue 9, with cationic and anionic surfactants was studied by absorption spectroscopy. The dyes
interact strongly with oppositely charged surfactant in the premicellar concentration range and the
appropriate values of constant of dye–surfactant complex formation were estimated. In addition, the
most important factor affecting the number of dye particles solubilized in the surfactant micelle was its
molecular mass.
2008 Elsevier Ltd. All rights reserve
DOWNLOAD FULL RESERACH PAPER
Ultrasonic dyeing of cationized cotton fabric with natural dye
Ultrasonic dyeing of cationized cotton fabric with natural dye.
Part 1: Cationization of cotton using Solfix E
M.M. Kamel *, M.M. El Zawahry, N.S.E. Ahmed, F. Abdelghaffar
National Research Centre, Textile Research Division, El-Behoos Street, Dokki, P.O. Box 12622 Cairo, Egypt
a r t i c l e i n f o
Article history:
Received 25 March 2008
Received in revised form 22 July 2008
Accepted 7 August 2008
Available online 15 August 2008
Keywords:
Cationization
Cotton
Ultrasound
Sonochemistry
Cochineal dye
Dyeing
a b s t r a c t
The dyeing of cationized cotton fabric with Solfix E using colouring matter extracted from Cochineal dye
has been studied using both conventional and ultrasonic techniques. Factors affecting dye extraction such
as ultrasound power, particle size, extraction temperature and time were studied. The results indicated
that the extraction by ultrasound at 300W was more effective at lower temperature and time than conventional
extraction. The effect of various factors of dye bath such as pH, salt concentration, ultrasound
power, dyeing time and temperature were investigated. The colour strength values obtained were found
to be higher with ultrasound than with conventional techniques. The results of fastness properties of the
dyed fabrics were fair to good. The scanning electron microscope (SEM) images of the morphological and
X-ray analyzes were measured for cationized cotton fabrics dyed with both conventional and ultrasound
methods, thus showing the sonicator efficiency.
2008 Published by Elsevier B.V.
Download Full Paper
Part 1: Cationization of cotton using Solfix E
M.M. Kamel *, M.M. El Zawahry, N.S.E. Ahmed, F. Abdelghaffar
National Research Centre, Textile Research Division, El-Behoos Street, Dokki, P.O. Box 12622 Cairo, Egypt
a r t i c l e i n f o
Article history:
Received 25 March 2008
Received in revised form 22 July 2008
Accepted 7 August 2008
Available online 15 August 2008
Keywords:
Cationization
Cotton
Ultrasound
Sonochemistry
Cochineal dye
Dyeing
a b s t r a c t
The dyeing of cationized cotton fabric with Solfix E using colouring matter extracted from Cochineal dye
has been studied using both conventional and ultrasonic techniques. Factors affecting dye extraction such
as ultrasound power, particle size, extraction temperature and time were studied. The results indicated
that the extraction by ultrasound at 300W was more effective at lower temperature and time than conventional
extraction. The effect of various factors of dye bath such as pH, salt concentration, ultrasound
power, dyeing time and temperature were investigated. The colour strength values obtained were found
to be higher with ultrasound than with conventional techniques. The results of fastness properties of the
dyed fabrics were fair to good. The scanning electron microscope (SEM) images of the morphological and
X-ray analyzes were measured for cationized cotton fabrics dyed with both conventional and ultrasound
methods, thus showing the sonicator efficiency.
2008 Published by Elsevier B.V.
Download Full Paper
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