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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MDPI AG
2023-02-01
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Series: | Polymers |
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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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id | doaj.art-4ab7250da15f4770b0fae61c563ec55d |
institution | Directory Open Access Journal |
issn | 2073-4360 |
language | English |
last_indexed | 2024-03-11T07:13:31Z |
publishDate | 2023-02-01 |
publisher | MDPI AG |
record_format | Article |
series | Polymers |
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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