2011 - Europe Direct Iasi

EUROINVENT 2011
determines the limit values of processing and usage temperature
of the composite, being at the same time the component that
confers material’s tenacity. The textile composites are used in
cars construction, packaging industry or as building materials.
Nowadays, these materials are used for furniture and for interior
design accessories and ambient art. In order to obtain composites
for ambient art with corresponding biodegradability, there were
used natural fibers and fabrics, linear poly(acryl amide) and an
polyhydroxy derivative of acetone.By modifying the ratio of the
three components (reinforcing material/ matrix/ coupling agent),
there were obtained multilayer composites with controlled
structural, mechanical and biodegradable characteristics.
R.4.
Title Dyeing Wool Fibers with Premetallised Acid Dyes
Authors Chirilă Laura, Butnaru Romen
”Gheorghe Asachi” Technical University of Iasi, Faculty of
Institution
Textile, Leather and Industrial Management
Dyeing wool fibers was achieved with new synthesized
premetallised dyes wich are derived from new acid dyes. The
synthesis procedure of the new premetallised is relatively simple
and, in addition, not involve many operations.
As ligands the acid dyes are part of the class of complexed acid
dyes, orto-hidroxi azo compounds type, with sulphonic
solubilising groups. The complexing reagents were used in the
form of transition metals salts, such as : FeCl3, CuCl2, NiCl2 and
respectively ZnCl2. the resulted premetalised dyes were
characterized using the following investigation methods:
elemental chemical analysis, IR-spectrometry, SEM, thermal
analysis.
Description
The synthesized premetallised dyes were tested for the wool
fibers following an experimental protocol, exhibiting a good
affinity. Also the tinctorial strenghts to light and wet treatments,
intensity of colour were tested in order to carry out the dyeing
performances. In all cases the tinctorial strenghts values are
improved comparing with the uncomplexed acid dyes. The
colour of each premetalised dyed sample is changing according
with the used salt. In order to investigate the mechanical
behavior of the dyed samples obtained at two pH values, the
tensile strenghts were evaluated. TEM and XPS were used in
order to evaluate the metal distribution over/into the fiber. The
dyeing influention over the surface integrity of the wool fiber
was investigated using SEM.
Innovative Researches
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