ABSTRACT
The factors that affect the colour yield of an acid dye on nylon fabric were investigated at a constant temperature of 500C, usingC.I. Acid Yellow 23,with citric acid and sodium chloride as auxiliaries. It was observed from the absorbance results that the colour yield of C.I. Acid Yellow 23 improved with increase in time of dyeing, while the absence or increase beyond 1% (acid) and 5% (salt) reduced the colour yield of the acid dye on the nylon fabric. Also, at a constant dyeing time of 10minutes, the absence or increase in salt beyond 5% had the most effect of reducing the colour yield. The results also show that for any given time of dyeing in this study, colour yield improved when salt and acid concentrations were constant at 5% and 1% respectively.
TABLE OF CONTENT
Abstract
Table of Content
List of Tables
List of Figures
CHAPTER ONE
1.0 Introduction
1.1 Background Information
1.1.1 Classification of Dyes
1.1.2 Colour Yield
1.1.3 Acid Dyes: Characteristics, Classification and Applications
1.1.4 Nylon; its Dyeability and Usage in Textile Industry
1.2 Problem Statement
1.3 Objective of the Research Work
1.4 Justification of Study 9
1.5 Scope of Study 10
CHAPTER TWO
2.0 Literature Review 11
2.1 Previous Research work on Acid Dyes on Nylon 11
CHAPTER THREE
3.0 Materials and Methodology 22
3.1 Materials 22
3.1.1 Collection of Materials 22
3.2 Apparatus 22
3.3 Method 23
3.3.1 Confirmation of Fabric Type 23
3.3.1.1 Solvent Preparation 23
3.3.1.2 Fabric Sample Preparation 24
3.3.1.3 Fabric Confirmatory Test 24
3.3.2 PreparationofDyeSolution 25
3.3.3 PreparationofDyeBath 25
3.3.4 Variationofsaltconcentrationduringdyeing 29
3.3.5 Variationof acid concentration during dyeing 30
3.3.6 VariationofTimeduringDyeing 30
3.3.7 Optical Density (Absorbance) and Transmittance Measurement 30
CHAPTER FOUR
4.0 Results and Discussion 32
4.1 Results 32
4.2 Discussion 35
4.2.1 Effect of Salt 36
4.2.2 Effect of Acid 39
4.2.3 Effect of Time Variation 42
4.3 Comparison of the effects of Salt, Time, and Acid 44
CHAPTER FIVE
5.0 Conclusion and Recommendations 46
5.1 Conclusion 46
5.2 Recommendations 47
APPENDIX 49 REFERENCES 52
Onyinyechi, N (2021). Factors Affecting the Colour Yield of an Acid Dye on Nylon Fabric. Afribary. Retrieved from https://afribary.com/works/factors-affecting-the-colour-yield-of-an-acid-dye-on-nylon-fabric
Onyinyechi, Nnorom "Factors Affecting the Colour Yield of an Acid Dye on Nylon Fabric" Afribary. Afribary, 22 Feb. 2021, https://afribary.com/works/factors-affecting-the-colour-yield-of-an-acid-dye-on-nylon-fabric. Accessed 19 Apr. 2024.
Onyinyechi, Nnorom . "Factors Affecting the Colour Yield of an Acid Dye on Nylon Fabric". Afribary, Afribary, 22 Feb. 2021. Web. 19 Apr. 2024. < https://afribary.com/works/factors-affecting-the-colour-yield-of-an-acid-dye-on-nylon-fabric >.
Onyinyechi, Nnorom . "Factors Affecting the Colour Yield of an Acid Dye on Nylon Fabric" Afribary (2021). Accessed April 19, 2024. https://afribary.com/works/factors-affecting-the-colour-yield-of-an-acid-dye-on-nylon-fabric