Sorption Properties of PET Copolyesters and New Approach for Foaming with Filament Extrusion Additive Manufacturing

The mass transfer process of binary esters of acetic acid in polyethylene terephthalate (PET), polyethylene terephthalate with a high degree of glycol modification (PETG), and glycol-modified polycyclohexanedimethylene terephthalate (PCTG) was studied. It was found that the desorption rate of the co...

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Main Authors: Nadiya Sova, Bohdan Savchenko, Victor Beloshenko, Aleksander Slieptsov, Iurii Vozniak
Format: Article
Language:English
Published: MDPI AG 2023-02-01
Series:Polymers
Subjects:
Online Access:https://www.mdpi.com/2073-4360/15/5/1138
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author Nadiya Sova
Bohdan Savchenko
Victor Beloshenko
Aleksander Slieptsov
Iurii Vozniak
author_facet Nadiya Sova
Bohdan Savchenko
Victor Beloshenko
Aleksander Slieptsov
Iurii Vozniak
author_sort Nadiya Sova
collection DOAJ
description The mass transfer process of binary esters of acetic acid in polyethylene terephthalate (PET), polyethylene terephthalate with a high degree of glycol modification (PETG), and glycol-modified polycyclohexanedimethylene terephthalate (PCTG) was studied. It was found that the desorption rate of the complex ether at the equilibrium point is significantly lower than the sorption rate. The difference between these rates depends on the type of polyester and temperature and allows the accumulation of ester in the volume of the polyester. For example, the stable content of acetic ester in PETG at 20 °C is 5 wt.%. The remaining ester, which has the properties of a physical blowing agent, was used in the filament extrusion additive manufacturing (AM) process. By varying the technological parameters of the AM process, foams of PETG with densities ranging from 150 to 1000 g/cm<sup>3</sup> were produced. Unlike conventional polyester foams, the resulting foams are not brittle.
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spelling doaj.art-4ab7250da15f4770b0fae61c563ec55d2023-11-17T08:26:40ZengMDPI AGPolymers2073-43602023-02-01155113810.3390/polym15051138Sorption Properties of PET Copolyesters and New Approach for Foaming with Filament Extrusion Additive ManufacturingNadiya Sova0Bohdan Savchenko1Victor Beloshenko2Aleksander Slieptsov3Iurii Vozniak4Department of Applied Ecology, Technology of Polymers and Chemical Fibers, Kyiv National University of Technologies and Design, Nemirovicha Danchenko Street, 2, 01011 Kyiv, UkraineDepartment of Applied Ecology, Technology of Polymers and Chemical Fibers, Kyiv National University of Technologies and Design, Nemirovicha Danchenko Street, 2, 01011 Kyiv, UkraineDonetsk Institute for Physics and Engineering named after O.O. Galkin, National Academy of Sciences of Ukraine, pr. Nauki, 46, 03028 Kyiv, UkraineDepartment of Applied Ecology, Technology of Polymers and Chemical Fibers, Kyiv National University of Technologies and Design, Nemirovicha Danchenko Street, 2, 01011 Kyiv, UkraineCentre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza Street, 112, 90-363 Lodz, PolandThe mass transfer process of binary esters of acetic acid in polyethylene terephthalate (PET), polyethylene terephthalate with a high degree of glycol modification (PETG), and glycol-modified polycyclohexanedimethylene terephthalate (PCTG) was studied. It was found that the desorption rate of the complex ether at the equilibrium point is significantly lower than the sorption rate. The difference between these rates depends on the type of polyester and temperature and allows the accumulation of ester in the volume of the polyester. For example, the stable content of acetic ester in PETG at 20 °C is 5 wt.%. The remaining ester, which has the properties of a physical blowing agent, was used in the filament extrusion additive manufacturing (AM) process. By varying the technological parameters of the AM process, foams of PETG with densities ranging from 150 to 1000 g/cm<sup>3</sup> were produced. Unlike conventional polyester foams, the resulting foams are not brittle.https://www.mdpi.com/2073-4360/15/5/1138polyethylene terephthalate copolyesterssorption propertiesmechanical propertiesfoamingadditive manufacturing
spellingShingle Nadiya Sova
Bohdan Savchenko
Victor Beloshenko
Aleksander Slieptsov
Iurii Vozniak
Sorption Properties of PET Copolyesters and New Approach for Foaming with Filament Extrusion Additive Manufacturing
Polymers
polyethylene terephthalate copolyesters
sorption properties
mechanical properties
foaming
additive manufacturing
title Sorption Properties of PET Copolyesters and New Approach for Foaming with Filament Extrusion Additive Manufacturing
title_full Sorption Properties of PET Copolyesters and New Approach for Foaming with Filament Extrusion Additive Manufacturing
title_fullStr Sorption Properties of PET Copolyesters and New Approach for Foaming with Filament Extrusion Additive Manufacturing
title_full_unstemmed Sorption Properties of PET Copolyesters and New Approach for Foaming with Filament Extrusion Additive Manufacturing
title_short Sorption Properties of PET Copolyesters and New Approach for Foaming with Filament Extrusion Additive Manufacturing
title_sort sorption properties of pet copolyesters and new approach for foaming with filament extrusion additive manufacturing
topic polyethylene terephthalate copolyesters
sorption properties
mechanical properties
foaming
additive manufacturing
url https://www.mdpi.com/2073-4360/15/5/1138
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