SYNTHESIS AND APPLICATION OF SQUARYLIUM DYES ON POLYESTER AND NYLON 6 FABRICS
SYNTHESIS AND APPLICATION OF SQUARYLIUM DYES ON POLYESTER AND NYLON 6 FABRICS
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Date
2017-05
Authors
ALI, Yakubu
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Abstract
Synthesis and application of squarylium dyes has been undertaken in order to
characterise the synthesised dyes by different spectrometric techniques, (FT-IR, UVvisible
and GC–MS), and to study their fastness properties, such as wash, light,
perspiration, and hot pressing, on nylon 6 and polyester fabrics. Also, effects of time,
temperature, carrier concentration and pH was investigated on polyester and nylon 6
fabrics. The dyed fabrics were generally found to show good (4) to very good wash (5),
light fastness of (5) and (6), perspiration (4) and (5), hot pressing (4) and (5) on nylon 6
and good to very good on polyester fabric respectively. The dye-bath exhaustion was
found to be between 76 % and 92 % on nylon 6 and 57 % and 85 % on polyester
respectively. The percentage exhaustion on nylon 6 was found to be very good to
excellent and but on polyester it was found to be good to very good. It can be concluded
that squarylium dyes can be applied to nylon 6 and polyester fabrics, but better
performance was found on nylon 6 than polyester fabric due to the amorphous nature of
nylon 6 compared to polyester.
Description
A DISSERTATION SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES, AHMADU BELLO UNIVERSITY, ZARIA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF MASTER OF SCIENCE DEGREE IN COLOUR CHEMISTRY AND TECHNOLOGY DEPARTMENT OF POLYMER AND TEXTILE SCIENCE,
FACULTY OF PHYSICAL SCIENCES, AHMADU BELLO UNIVERSITY, ZARIA, NIGERIA
Keywords
SYNTHESIS,, APPLICATION,, SQUARYLIUM DYES,, POLYESTER,, NYLON 6 FABRICS,