Orientation-Induced Structure–Property Relationships in Recycled PET-Based Blends Containing Amorphous Copolyesters and Polycarbonate.
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| Title: | Orientation-Induced Structure–Property Relationships in Recycled PET-Based Blends Containing Amorphous Copolyesters and Polycarbonate. |
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| Authors: | Sova, Nadiya1 (AUTHOR), Savchenko, Bogdan1,2 (AUTHOR), Slieptsov, Aleksander1,3 (AUTHOR), Plavan, Viktoriia1 (AUTHOR), Vozniak, Alina2 (AUTHOR) alina.vozniak@cbmm.lodz.pl, Beloshenko, Victor3 (AUTHOR) |
| Source: | Polymers (20734360). Jun2026, Vol. 18 Issue 11, p1293. 16p. |
| Subjects: | Polyethylene terephthalate, Polymer blends, Crystallization, Polycarbonates, Mechanical behavior of materials, Fiber orientation |
| Abstract: | The presence of polymeric impurities in recycled polyethylene terephthalate (PET) streams, particularly amorphous copolyesters such as polyethylene terephthalate glycol-modified (PETG) and polycyclohexylenedimethylene terephthalate glycol-modified (PCTG), as well as polycarbonate (PC), represents a critical challenge for high-performance applications involving orientation drawing. In this study, the influence of such components on the orientation behavior and resulting mechanical properties of PET-based blends was systematically investigated. Model blends were prepared using virgin materials and processed into monofilaments via inline melt spinning followed by controlled orientation drawing with draw ratios up to 6.5. The evolution of tensile strength, modulus, elongation at break, density, and thermal shrinkage was analyzed as a function of draw ratio. The results demonstrate that PET-rich systems exhibit superior mechanical performance, which is consistent with the development of strain-induced crystallization during orientation drawing, reflected in increased density and reduced thermal shrinkage at higher draw ratios. In contrast, amorphous copolyesters (PETG, PCTG) suppress crystallization, resulting in limited structural development, lower modulus, and significantly higher thermal shrinkage. Blends containing polycarbonate showed reduced maximum draw ratios and tensile strength, indicating restricted orientation capability, but exhibited comparatively low shrinkage at moderate draw levels. The study establishes clear structure–property relationships linking molecular orientation, crystallization behavior, and macroscopic performance in PET-based blends. The findings highlight that even minor amounts (~10 wt%) of amorphous polyester impurities can significantly alter orientation efficiency and end-use properties, emphasizing the importance of feedstock control in recycling processes targeting high-performance-oriented products such as strapping tapes and monofilaments. [ABSTRACT FROM AUTHOR] |
| Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 194587557 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Orientation-Induced Structure–Property Relationships in Recycled PET-Based Blends Containing Amorphous Copolyesters and Polycarbonate. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Sova%2C+Nadiya%22">Sova, Nadiya</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Savchenko%2C+Bogdan%22">Savchenko, Bogdan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Slieptsov%2C+Aleksander%22">Slieptsov, Aleksander</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Plavan%2C+Viktoriia%22">Plavan, Viktoriia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Vozniak%2C+Alina%22">Vozniak, Alina</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> alina.vozniak@cbmm.lodz.pl</i><br /><searchLink fieldCode="AR" term="%22Beloshenko%2C+Victor%22">Beloshenko, Victor</searchLink><relatesTo>3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Jun2026, Vol. 18 Issue 11, p1293. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Polyethylene+terephthalate%22">Polyethylene terephthalate</searchLink><br /><searchLink fieldCode="DE" term="%22Polymer+blends%22">Polymer blends</searchLink><br /><searchLink fieldCode="DE" term="%22Crystallization%22">Crystallization</searchLink><br /><searchLink fieldCode="DE" term="%22Polycarbonates%22">Polycarbonates</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Fiber+orientation%22">Fiber orientation</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The presence of polymeric impurities in recycled polyethylene terephthalate (PET) streams, particularly amorphous copolyesters such as polyethylene terephthalate glycol-modified (PETG) and polycyclohexylenedimethylene terephthalate glycol-modified (PCTG), as well as polycarbonate (PC), represents a critical challenge for high-performance applications involving orientation drawing. In this study, the influence of such components on the orientation behavior and resulting mechanical properties of PET-based blends was systematically investigated. Model blends were prepared using virgin materials and processed into monofilaments via inline melt spinning followed by controlled orientation drawing with draw ratios up to 6.5. The evolution of tensile strength, modulus, elongation at break, density, and thermal shrinkage was analyzed as a function of draw ratio. The results demonstrate that PET-rich systems exhibit superior mechanical performance, which is consistent with the development of strain-induced crystallization during orientation drawing, reflected in increased density and reduced thermal shrinkage at higher draw ratios. In contrast, amorphous copolyesters (PETG, PCTG) suppress crystallization, resulting in limited structural development, lower modulus, and significantly higher thermal shrinkage. Blends containing polycarbonate showed reduced maximum draw ratios and tensile strength, indicating restricted orientation capability, but exhibited comparatively low shrinkage at moderate draw levels. The study establishes clear structure–property relationships linking molecular orientation, crystallization behavior, and macroscopic performance in PET-based blends. The findings highlight that even minor amounts (~10 wt%) of amorphous polyester impurities can significantly alter orientation efficiency and end-use properties, emphasizing the importance of feedstock control in recycling processes targeting high-performance-oriented products such as strapping tapes and monofilaments. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/polym18111293 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 1293 Subjects: – SubjectFull: Polyethylene terephthalate Type: general – SubjectFull: Polymer blends Type: general – SubjectFull: Crystallization Type: general – SubjectFull: Polycarbonates Type: general – SubjectFull: Mechanical behavior of materials Type: general – SubjectFull: Fiber orientation Type: general Titles: – TitleFull: Orientation-Induced Structure–Property Relationships in Recycled PET-Based Blends Containing Amorphous Copolyesters and Polycarbonate. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Sova, Nadiya – PersonEntity: Name: NameFull: Savchenko, Bogdan – PersonEntity: Name: NameFull: Slieptsov, Aleksander – PersonEntity: Name: NameFull: Plavan, Viktoriia – PersonEntity: Name: NameFull: Vozniak, Alina – PersonEntity: Name: NameFull: Beloshenko, Victor IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 20734360 Numbering: – Type: volume Value: 18 – Type: issue Value: 11 Titles: – TitleFull: Polymers (20734360) Type: main |
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