Preparation of Polylactide/Halloysite-Nanoclay/Polytetrafluoro-Ethylene Composite Foam and Study of Properties and Morphology
Halloysite nanoclay (HNC) and as-polymerized polytetrafluoroethylene powder (PTFE) were introduced into biodegradable polylactic acid (PLA) via a melt mixing technique to enhance its mechanical, rheological properties and foaming ability. The synergetic effects of these fillers on the morphological,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-04-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/15/9/667 |
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| author | Silla George Raju Hanieh Kargarzadeh Andrzej Galeski |
| author_facet | Silla George Raju Hanieh Kargarzadeh Andrzej Galeski |
| author_sort | Silla George Raju |
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| description | Halloysite nanoclay (HNC) and as-polymerized polytetrafluoroethylene powder (PTFE) were introduced into biodegradable polylactic acid (PLA) via a melt mixing technique to enhance its mechanical, rheological properties and foaming ability. The synergetic effects of these fillers on the morphological, mechanical, thermal, and foaming properties of PLA were investigated. Results indicated that the tensile properties were improved in comparison to neat PLA. Differential Scanning Calorimetry (DSC) revealed a decrease in PLA crystallization time with increasing filler concentration, indicating a strong nucleating effect on PLA crystallization. Extensional flow tests showed that strain hardening in PLA composites is influenced by fillers, with PTFE particularly exhibiting a more pronounced effect, attributed to nanofibrillation and entanglement during melt processing. The addition of a dual-filler system improved the melt strength and viscosity of PLA, resulting in foams with decreased cell size and increased cell density. |
| format | Article |
| id | doaj-art-fd49eadbd948438b82f01566211c8c28 |
| institution | Kabale University |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-fd49eadbd948438b82f01566211c8c282025-08-20T03:49:22ZengMDPI AGNanomaterials2079-49912025-04-0115966710.3390/nano15090667Preparation of Polylactide/Halloysite-Nanoclay/Polytetrafluoro-Ethylene Composite Foam and Study of Properties and MorphologySilla George Raju0Hanieh Kargarzadeh1Andrzej Galeski2BioMedChem Doctoral School, the University of Lodz and Lodz Institutes of the Polish Academy of Sciences, 21/23 Matejki Street, 90-237 Lodz, PolandCentre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, PolandCentre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, PolandHalloysite nanoclay (HNC) and as-polymerized polytetrafluoroethylene powder (PTFE) were introduced into biodegradable polylactic acid (PLA) via a melt mixing technique to enhance its mechanical, rheological properties and foaming ability. The synergetic effects of these fillers on the morphological, mechanical, thermal, and foaming properties of PLA were investigated. Results indicated that the tensile properties were improved in comparison to neat PLA. Differential Scanning Calorimetry (DSC) revealed a decrease in PLA crystallization time with increasing filler concentration, indicating a strong nucleating effect on PLA crystallization. Extensional flow tests showed that strain hardening in PLA composites is influenced by fillers, with PTFE particularly exhibiting a more pronounced effect, attributed to nanofibrillation and entanglement during melt processing. The addition of a dual-filler system improved the melt strength and viscosity of PLA, resulting in foams with decreased cell size and increased cell density.https://www.mdpi.com/2079-4991/15/9/667polylactidenanocompositeextrusion foamingPTFEnanoclaystrain hardening |
| spellingShingle | Silla George Raju Hanieh Kargarzadeh Andrzej Galeski Preparation of Polylactide/Halloysite-Nanoclay/Polytetrafluoro-Ethylene Composite Foam and Study of Properties and Morphology Nanomaterials polylactide nanocomposite extrusion foaming PTFE nanoclay strain hardening |
| title | Preparation of Polylactide/Halloysite-Nanoclay/Polytetrafluoro-Ethylene Composite Foam and Study of Properties and Morphology |
| title_full | Preparation of Polylactide/Halloysite-Nanoclay/Polytetrafluoro-Ethylene Composite Foam and Study of Properties and Morphology |
| title_fullStr | Preparation of Polylactide/Halloysite-Nanoclay/Polytetrafluoro-Ethylene Composite Foam and Study of Properties and Morphology |
| title_full_unstemmed | Preparation of Polylactide/Halloysite-Nanoclay/Polytetrafluoro-Ethylene Composite Foam and Study of Properties and Morphology |
| title_short | Preparation of Polylactide/Halloysite-Nanoclay/Polytetrafluoro-Ethylene Composite Foam and Study of Properties and Morphology |
| title_sort | preparation of polylactide halloysite nanoclay polytetrafluoro ethylene composite foam and study of properties and morphology |
| topic | polylactide nanocomposite extrusion foaming PTFE nanoclay strain hardening |
| url | https://www.mdpi.com/2079-4991/15/9/667 |
| work_keys_str_mv | AT sillageorgeraju preparationofpolylactidehalloysitenanoclaypolytetrafluoroethylenecompositefoamandstudyofpropertiesandmorphology AT haniehkargarzadeh preparationofpolylactidehalloysitenanoclaypolytetrafluoroethylenecompositefoamandstudyofpropertiesandmorphology AT andrzejgaleski preparationofpolylactidehalloysitenanoclaypolytetrafluoroethylenecompositefoamandstudyofpropertiesandmorphology |