Factors Affecting the Colour Yield of an Acid Dye on Nylon Fabric

Table of Content

List of Tables

List of Figures

CHAPTER ONE

1. 1.0  Introduction

2. 1.1  Background Information

1. 1.1.1  Classification of Dyes

2. 1.1.2  Colour Yield

3. 1.1.3  Acid Dyes: Characteristics, Classification and Applications

4. 1.1.4  Nylon; its Dyeability and Usage in Textile Industry

1. 1.2  Problem Statement

2. 1.3  Objective of the Research Work

1. 1.4  Justification of Study 9

2. 1.5  Scope of Study 10

CHAPTER TWO

1. 2.0  Literature Review 11

2. 2.1  Previous Research work on Acid Dyes on Nylon 11

CHAPTER THREE

1. 3.0  Materials and Methodology 22

2. 3.1  Materials 22

3.1.1 Collection of Materials 22

1. 3.2  Apparatus 22

2. 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

1. 4.0  Results and Discussion 32

2. 4.1  Results 32

3. 4.2  Discussion 35

1. 4.2.1  Effect of Salt 36

2. 4.2.2  Effect of Acid 39

3. 4.2.3  Effect of Time Variation 42

4.3 Comparison of the effects of Salt, Time, and Acid 44

CHAPTER FIVE

1. 5.0  Conclusion and Recommendations 46

2. 5.1  Conclusion 46

3. 5.2  Recommendations 47

APPENDIX 49 REFERENCES 52