THE EFFECTS OF VANILLIN AS CARRIER IN THE DYEING OF POLYESTER FABRIC
THE EFFECTS OF VANILLIN AS CARRIER IN THE DYEING OF POLYESTER FABRIC
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Date
2017-04
Authors
ODEY, Joseph
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Abstract
The potential use of extracted Vanillin from vanilla flavour for the chemical substitution of toxic carriers used in aqueous dyeing of polyester fabrics was assessed. The extracted vanillin was used to compare the dyeing of a woven polyester fabric with two synthesized azo disperse dye from 2-nitroso-1-naphtol and 1-nitrosol-2-naphthol and two commercial dyes C.I Disperse Yellow 56, and C.I. Disperse Yellow 50. When vanillin and the conventional carriers were used for dyeing at 3% shade at boil, the dye uptakes increased for both vanillin and the conventional carriers but were higher with the conventional carrier especially benzoic acid which gave 81.4% exhaustion and least for salicylic acid which gave 73% exhaustion, at 0.15g of vanillin and pH 4 and70.4% exhaustion for C.I Foron Yellow 50 and least on C.I Disperse Yellow 56 which gave 0.66% exhaustion pH 11. The wash, hot pressing and light fastness were determined, an excellent wash fastness was observed at both ISO2 and ISO3 wash fastness respectively for the conventional carriers and vanillin which gave an excellent rating of 4-5. More so, the light fastness test gives a high fastness rating at an average of 6-7 for both the conventional carrier and vanillin at the different pH and concentration used.The study confirms that vanillin can be used as a chemical substitute to conventional carriers withgood wash and light fastness properties.
Description
A THESIS 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
EFFECTS,, VANILLIN,, CARRIER,, DYEING,, POLYESTER FABRIC