Influence of Polyolefin Contamination on the Thermal Characteristics of\ud Bottle Grade Recycled Polyethylene Terephthalate

0044 English OPEN
Itim, Bachir;
(2015)
  • Subject: dewey660

During the mechanical recycling, especially during the sorting and separation process of bottle grade PET, cross contamination with polyolefin is inevitable. Very small number of polyolefin bottles, caps and closures pass through the separation process and get recycled ... View more
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    1.2.1 Average Molecular Weights and their Distribution .............................................. 04-06 1.2.2 Amorphous and Semi-crystalline Polymers ........................................................... 07-09 1.2.3 Crystallisation Process ................................................................................................. 10 1.2.4 Evaluation of Crystallisation for Isothermal Process .............................................. 11-12 1.2.5 Evaluation of Crystallisation for Non-isothermal Process ...................................... 13-15

    1.3 Aims and Objectives ............................................................................................................. 16

    CHAPTER 2 LITERATURE REVIEW ...................................................…......………. 17-39

    2.1 Poly(ethylene terephthalate) or PET ................................................................................ 17-31

    2.1.1 Synthesis of PET Monomer ............................................. .................................... 17-21 2.1.2 Synthesis of PET .................................................................................................. 21-22 2.1.3 Degradation of PET ............................................................................................... 22-23 2.1.4 PET Grades and their Applications ............................................................................. 24 2.1.5 PET Bottles Manufacturing Process ........................................................................... 25 2.1.6 Recycling of PET .................................................................................................. 26-31

    2.2 PET recycling and PET Blends ..................................................................................... 32-37 3.2.1 Differential Scanning Calorimetry, DSC .............................................................. 43-56

    3.2.1.1 DSC Measuring Techniques ........................................................................ 48 3.2.1.2 Procedure ................................................................................................ 49-34

    3.2.1.2.1 Glass Transition .................................................................... 51-52 3.2.1.2.2 Melting .................................................................................. 52-53 3.2.1.2.3 Crystallisation ....................................................................... 53-55 3.2.1.2.4 Degree of Crystallinity, Xc .................................................... 55-56

    3.2.2 Fourier Transform Infrared, FTIR ......................................................................... 56-61

    3.2.2.1 FTIR Measuring Technique .................................................................... 58-60 3.2.2.2 Procedure ................................................................................................. 60-61

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