Recycled Polyester (eBook)

Contents 6
Properties of Recycled Polyester 7
1 Introduction 7
2 Polyester 9
3 Need for Recycled Polyester 10
4 Identification of Plastic and Its Recycling Code 11
5 Recycled Polyesters 12
6 Methodology for Polyester Recycling 13
6.1 Re-Utilization 14
6.2 Mechanical and Thermal Reprocessing 14
6.3 Chemical Reprocessing 14
6.4 Factors Influencing the Polyester Reprocessing 15
6.5 Colorants 15
6.6 Contaminants 15
6.7 Water 15
7 Properties of Recycled Polyesters 15
7.1 Physical Properties 16
7.2 Mechanical Properties 17
7.3 Thermal Properties 18
7.4 Sound Absorption Properties 18
7.5 Environmental properties 19
8 Conclusion and Future Perspectives 19
References 19
Effects of Gamma Radiation on the Physicochemical Properties of Polyester Resin and Its Use in Composite Materials 21
1 Introduction 22
2 Methods for Recycling or Reusing Polyester Resin 24
3 Gamma Radiation 26
4 Effects of Gamma Radiation in Polyester Resin 27
5 Gamma Radiation as Modifier of Composites Elaborated with Polyester Resins 30
6 Conclusions 32
References 33
Studies on Recycled Polyester 35
1 Introduction 36
2 Experimental Part 37
2.1 Materials Preparation 37
2.2 Karl Fischer Titration 39
2.3 Melt Spinning in Laboratory Scale 41
2.4 Differential Scanning Calorimetry 42
2.5 Morphological Study and Diameter Evaluation 43
2.6 Single Fibre Tensile Test 43
2.7 Hot Shrinkage 43
2.8 Thermogravimetric Analysis 44
2.9 Size Exclusion Chromatography 44
2.10 Rheological Characterization 44
3 Characterizations of Raw Materials 45
3.1 Thermal Behaviour 45
3.2 Molar Mass Characterization 46
3.3 Rheological Characterization 47
4 Characterizations of Melt-Spun Fibres 50
4.1 Surface Morphology 50
4.2 Diameter Distribution of Fibres 51
4.3 Molar Mass Degradation 56
4.4 Thermal Stability 56
4.5 Evaluation of Mechanical Properties 57
5 Performance-Reliability Plot 64
6 Comparison with Reviewed Literature 68
7 Conclusions 69
References 70
Test Methods and Identification of Recycled Polyester 74
1 Introduction 75
2 Textile Recycling/Polyester Recycling 76
2.1 Types of the Recycling Process 77
2.2 Upcycling and Downcycling 82
3 Test Methods of Recycled Polyester 82
3.1 Polyester Manufacturing 82
3.2 The Recovery of Polyester 83
3.3 Test Methods and Identification of Recycled Polyester 83
4 Supply Chain Approach in Textile Business 86
4.1 Research Gaps and Objectives 86
4.2 Open and Closed-Loop Recycling 87
4.3 Sustainability in Recycling 89
4.4 Suppliers with a Credible Certificate 89
4.5 Cradle to Cradle 89
4.6 Recycled Claim Standard (RCS) 90
4.7 Characteristics of Recycled Polyester 91
5 Conclusion 91
References 92