Recycling Tetrafluoroethylene–Perfluoroalkyl Vinylether Copolymer (PFA) Using Extrusion Process
Abstract Tetrafluoroethylene–perfluoroalkyl vinylether copolymer (PFA) has a broad application ranging from biomedical and aerospace to corroding environments in the chemical industry. Despite a low share in end‐of‐life products, PFA processing can produce up to 30% of waste. Thus, understanding how...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-02-01
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| Series: | Macromolecular Materials and Engineering |
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| Online Access: | https://doi.org/10.1002/mame.202200458 |
| _version_ | 1797743198170251264 |
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| author | Carlos Henrique Romoaldo Edson Luiz Francisquetti Douglas Alexandre Simon Juliano Roberto Ernze Eveline Bischoff |
| author_facet | Carlos Henrique Romoaldo Edson Luiz Francisquetti Douglas Alexandre Simon Juliano Roberto Ernze Eveline Bischoff |
| author_sort | Carlos Henrique Romoaldo |
| collection | DOAJ |
| description | Abstract Tetrafluoroethylene–perfluoroalkyl vinylether copolymer (PFA) has a broad application ranging from biomedical and aerospace to corroding environments in the chemical industry. Despite a low share in end‐of‐life products, PFA processing can produce up to 30% of waste. Thus, understanding how recycled fluorinated polymers affect product performance is crucial to ensure primary recycling, besides economic and environmental reasons. In this paper, the utilization feasibility of PFA waste materials is investigated, i.e., recycled PFA (PFAr) in closed‐loop recycling. The effect of PFAr loading (5–100 wt.%) on the thermal, mechanical, rheological, and color properties and chemical resistance are studied. Thermal properties and chemical resistance showed no significant changes in all ranges of PFAr content tested. The addition of higher loads of PFAr (≥50 wt.%) leads to a reduction in mechanical properties, particularly stress‐strength analysis and elongation at break. However, elastic modulus and hardness have improved concurrently with an increase in the degree of crystallinity. The decrease in complex viscosity and yellowing of the samples occurred probably induced by a polymer chain degradation. Despite that, the addition of up to 10 wt.% of PFAr proved to be an effective alternative to reusing PFA residues based on mechanical recycling. |
| first_indexed | 2024-03-12T14:52:04Z |
| format | Article |
| id | doaj.art-c638fc5f42ae41869572fad0a5295e61 |
| institution | Directory Open Access Journal |
| issn | 1438-7492 1439-2054 |
| language | English |
| last_indexed | 2024-03-12T14:52:04Z |
| publishDate | 2023-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Macromolecular Materials and Engineering |
| spelling | doaj.art-c638fc5f42ae41869572fad0a5295e612023-08-15T09:10:31ZengWiley-VCHMacromolecular Materials and Engineering1438-74921439-20542023-02-013082n/an/a10.1002/mame.202200458Recycling Tetrafluoroethylene–Perfluoroalkyl Vinylether Copolymer (PFA) Using Extrusion ProcessCarlos Henrique Romoaldo0Edson Luiz Francisquetti1Douglas Alexandre Simon2Juliano Roberto Ernze3Eveline Bischoff4Programa de Pós Graduação em Tecnologia e Engenharia de Materiais – PPGTEM Instituto Federal de Educação Ciência e Tecnologia do Rio Grande do Sul – IFRS – Campus Farroupilha Av. São Vicente 785 Farroupilha RS 95174–274 BrazilPrograma de Pós Graduação em Tecnologia e Engenharia de Materiais – PPGTEM Instituto Federal de Educação Ciência e Tecnologia do Rio Grande do Sul – IFRS – Campus Farroupilha Av. São Vicente 785 Farroupilha RS 95174–274 BrazilPrograma de Pós Graduação em Tecnologia e Engenharia de Materiais – PPGTEM Instituto Federal de Educação Ciência e Tecnologia do Rio Grande do Sul – IFRS – Campus Farroupilha Av. São Vicente 785 Farroupilha RS 95174–274 BrazilMantoflex Indústia de Plásticos Ltda. R. Archimedes Manenti, 574, Centenário Caxias do Sul RS 95045–175 BrazilPrograma de Pós Graduação em Tecnologia e Engenharia de Materiais – PPGTEM Instituto Federal de Educação Ciência e Tecnologia do Rio Grande do Sul – IFRS – Campus Farroupilha Av. São Vicente 785 Farroupilha RS 95174–274 BrazilAbstract Tetrafluoroethylene–perfluoroalkyl vinylether copolymer (PFA) has a broad application ranging from biomedical and aerospace to corroding environments in the chemical industry. Despite a low share in end‐of‐life products, PFA processing can produce up to 30% of waste. Thus, understanding how recycled fluorinated polymers affect product performance is crucial to ensure primary recycling, besides economic and environmental reasons. In this paper, the utilization feasibility of PFA waste materials is investigated, i.e., recycled PFA (PFAr) in closed‐loop recycling. The effect of PFAr loading (5–100 wt.%) on the thermal, mechanical, rheological, and color properties and chemical resistance are studied. Thermal properties and chemical resistance showed no significant changes in all ranges of PFAr content tested. The addition of higher loads of PFAr (≥50 wt.%) leads to a reduction in mechanical properties, particularly stress‐strength analysis and elongation at break. However, elastic modulus and hardness have improved concurrently with an increase in the degree of crystallinity. The decrease in complex viscosity and yellowing of the samples occurred probably induced by a polymer chain degradation. Despite that, the addition of up to 10 wt.% of PFAr proved to be an effective alternative to reusing PFA residues based on mechanical recycling.https://doi.org/10.1002/mame.202200458tetrafluoroethylene–perfluoroalkyl vinylether copolymersPFA, mechanical recyclingmechanical propertieschemical resistance |
| spellingShingle | Carlos Henrique Romoaldo Edson Luiz Francisquetti Douglas Alexandre Simon Juliano Roberto Ernze Eveline Bischoff Recycling Tetrafluoroethylene–Perfluoroalkyl Vinylether Copolymer (PFA) Using Extrusion Process Macromolecular Materials and Engineering tetrafluoroethylene–perfluoroalkyl vinylether copolymers PFA, mechanical recycling mechanical properties chemical resistance |
| title | Recycling Tetrafluoroethylene–Perfluoroalkyl Vinylether Copolymer (PFA) Using Extrusion Process |
| title_full | Recycling Tetrafluoroethylene–Perfluoroalkyl Vinylether Copolymer (PFA) Using Extrusion Process |
| title_fullStr | Recycling Tetrafluoroethylene–Perfluoroalkyl Vinylether Copolymer (PFA) Using Extrusion Process |
| title_full_unstemmed | Recycling Tetrafluoroethylene–Perfluoroalkyl Vinylether Copolymer (PFA) Using Extrusion Process |
| title_short | Recycling Tetrafluoroethylene–Perfluoroalkyl Vinylether Copolymer (PFA) Using Extrusion Process |
| title_sort | recycling tetrafluoroethylene perfluoroalkyl vinylether copolymer pfa using extrusion process |
| topic | tetrafluoroethylene–perfluoroalkyl vinylether copolymers PFA, mechanical recycling mechanical properties chemical resistance |
| url | https://doi.org/10.1002/mame.202200458 |
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