Mechanical and thermal characterization of a vitrimerized thermoplastic

Document Type : Original Article

Authors

1 Design and Production Department, Faculty of Engineering, Ain Shams University, Cairo, Egypt.

2 Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt.

3 Department of Materials Engineering, Faculty of Engineering and Materials Science, German University in Cairo, Main Entrance, El-Tagamoa Elkhames, New Cairo, Egypt.

10.1088/1742-6596/3058/1/012007

Abstract

In this work, a vitrimer of polyethylene terephthalate was prepared through mixing with an epoxy and a polyol and curing. Different curing temperatures were utilized for preparation and the resulted characteristics were investigated. Curing temperature was found to highly affect the produced vitrimer. At high curing temperature, crosslinking was observed to be achieved successfully through different characterization methods. Differential scanning calorimetry DSC
showed a single peak instead of dual peak known for PET. This proves disability of forming two populations of crystallites due to crosslinking. In addition, swelling test showed insoluble portion of the vitrimer, which indicated that crosslinking was obtained. Swelling in two different solvents were studied. On the other hand, at lower curing temperature, DSC showed dual peaks and tensile test showed lower tensile strength compared to precursor PET. Dynamic thermo-mechanical analysis did not show plateau after melting temperature, indicating non-networked structure.

Keywords

The International Conference on Applied Mechanics and Mechanical Engineering
Volume 22, Issue 22
22nd International Conference on Applied Mechanics & Mechanical Engineering, AMME-22
2025
Pages 1-14

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