Cavitation and Solid-State Post-Condensation of Polyethylene Terephthalate: Literature Review

Waldemar Karaszewski; Paweł Wawrzyniak; Artur Różański

doi:10.3390/ma17225637

Cavitation and Solid-State Post-Condensation of Polyethylene Terephthalate: Literature Review

Abstract

Polyethylene terephthalate (PET) is widely used in bottle production by stretch blow molding processes (SBM processes) due to its cost-effectiveness and low environmental impact. The presented literature review focuses on microcavitation and solid-state post-condensation effects that occur during the deformation of PET in the SBM process. The literature review describes cavitation and microcavitation effects in PET material and solid-state post-condensation of PET on the basis of a three-phase model of the PET microstructure. A three-phase model of PET microstructure (representing the amorphous phase in two ways, depending on the ratio of the trans-to-gauche conformation of the PET macromolecule and the amount of free volume) with a nucleation process, a crystallization process, and the use of positron annihilation lifetime spectroscopy (PALS) to analyze PET microstructure are discussed in detail. The conceptual model developed based on the literature combines solid-state post-condensation with microcavitation via the diffusion of the post-condensation product. This review identifies the shortcomings of the developed conceptual model and presents them with five hypotheses, which will be the basis for further research.

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Articles

Type:

artykuły w czasopismach

Published in:

Materials no. 17,
ISSN: 1996-1944

Language:

English

Publication year:

2024

Bibliographic description:

Karaszewski W., Wawrzyniak P., Różański A.: Cavitation and Solid-State Post-Condensation of Polyethylene Terephthalate: Literature Review// Materials -,iss. 22 (2024), s.5637-

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