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Benkraled L, Zennaki A, Zair L, Arabeche K, Berrayah A, Barrera A, Bouberka Z, Maschke U. Effect of Plasticization/Annealing on Thermal, Dynamic Mechanical, and Rheological Properties of Poly(Lactic Acid). Polymers (Basel) 2024; 16:974. [PMID: 38611232 PMCID: PMC11013295 DOI: 10.3390/polym16070974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/14/2024] [Accepted: 03/23/2024] [Indexed: 04/14/2024] Open
Abstract
This study investigates the use of low molecular weight poly(ethylene glycol) (PEG) as a plasticizer for poly(lactic acid) (PLA). PLA/PEG blend films were prepared using the solvent casting method with varying mixing ratios. The films were analyzed using differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and dynamic rheological analysis. The results indicate that the addition of PEG as a plasticizer affects the thermal and mechanical properties of the PLA/PEG blend films. The study found that the glass transition and cold crystallization temperatures decreased with increasing PEG content up to 20 wt%, while the crystallinity and crystallization rate increased. The blends with up to 20 wt% PEG were miscible, but phase separation occurred when the plasticizer content was increased to 30 wt%. Subsequently, amorphous samples of neat PLA and PLA plasticized with 10 wt% of PEG underwent annealing at various temperatures (Ta = 80-120 °C) for durations ta of 1 and 24 h. The samples were then analyzed using DSC and DMA. The addition of PEG to PLA altered the content of α' and α crystalline forms compared to neat PLA at a given (Ta; ta) and favored the formation of a mixture of α' and α crystals. The crystallinity achieved upon annealing increased with increasing Ta or ta and with the incorporation of PEG.
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Affiliation(s)
- Lina Benkraled
- Laboratoire de Recherche sur les Macromolécules (LRM), Faculté des Sciences, Université Abou Bekr Belkaïd, BP 119, Tlemcen 13000, Algeria
| | - Assia Zennaki
- Laboratoire de Recherche sur les Macromolécules (LRM), Faculté des Sciences, Université Abou Bekr Belkaïd, BP 119, Tlemcen 13000, Algeria
| | - Latifa Zair
- Laboratoire de Recherche sur les Macromolécules (LRM), Faculté des Sciences, Université Abou Bekr Belkaïd, BP 119, Tlemcen 13000, Algeria
| | - Khadidja Arabeche
- Laboratoire de Recherche sur les Macromolécules (LRM), Faculté des Sciences, Université Abou Bekr Belkaïd, BP 119, Tlemcen 13000, Algeria
| | - Abdelkader Berrayah
- Laboratoire de Recherche sur les Macromolécules (LRM), Faculté des Sciences, Université Abou Bekr Belkaïd, BP 119, Tlemcen 13000, Algeria
| | - Ana Barrera
- Unité Matériaux et Transformations (UMET), UMR 8207, Université de Lille, CNRS, INRAE, Centrale Lille, 59000 Lille, France
| | - Zohra Bouberka
- Laboratoire Physico-Chimique des Matériaux, Catalyse et Environnement (LPCMCE), Université des Sciences et de la Technologie Mohammed Boudiaf d’Oran (USTO-MB), Oran 31000, Algeria
| | - Ulrich Maschke
- Unité Matériaux et Transformations (UMET), UMR 8207, Université de Lille, CNRS, INRAE, Centrale Lille, 59000 Lille, France
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Zennaki A, Zair L, Arabeche K, Benkraled L, Maschke U, Berrayah A. Effect of annealing on thermal and dynamic mechanical properties of poly(lactic acid). J Appl Polym Sci 2022. [DOI: 10.1002/app.53095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Assia Zennaki
- Laboratoire de Recherche sur les Macromolécules, Faculté des Sciences Université Aboubakr Belkaïd Tlemcen Algeria
| | - Latifa Zair
- Laboratoire de Recherche sur les Macromolécules, Faculté des Sciences Université Aboubakr Belkaïd Tlemcen Algeria
| | - Khadidja Arabeche
- Laboratoire de Recherche sur les Macromolécules, Faculté des Sciences Université Aboubakr Belkaïd Tlemcen Algeria
| | - Lina Benkraled
- Laboratoire de Recherche sur les Macromolécules, Faculté des Sciences Université Aboubakr Belkaïd Tlemcen Algeria
| | - Ulrich Maschke
- UMET – Unité Matériaux et Transformations, UMR 8207, University of Lille, CNRS, INRAE, Centrale Lille Lille France
| | - Abdelkader Berrayah
- Laboratoire de Recherche sur les Macromolécules, Faculté des Sciences Université Aboubakr Belkaïd Tlemcen Algeria
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Anas Abderrahmane Lahouel, Miloudi N, Medjahed K, Berrayah A, Sahli N. Green Synthesis Method of Poly[(2,5-diyl pyrrole)(4-hydroxy-3-methoxy benzylidene)] Semiconductor Polymer Using an Ecologic Catalyst. Polym Sci Ser B 2022. [DOI: 10.1134/s1560090422700348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Hadjou Belaid Z, Mechernene L, Abdoune FZ, Berrayah A, Maschke U. Photo-differential Scanning Calorimetry Study on Photopolymerization of Polyacrylate/E7 Liquid Crystal Blends. J MACROMOL SCI B 2018. [DOI: 10.1080/00222348.2018.1452496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Z. Hadjou Belaid
- Département de Physique, Faculté des Sciences, Laboratoire de Recherche sur les Macromolécules, Université Aboubakr Belkaïd de Tlemcen, Tlemcen, Algeria
- Unité Matériaux et Transformations (UMET), UMR CNRS N°8207, Bâtiment C6, Université des Sciences et Technologies de Lille, Villeneuve d’Ascq Cedex, France
| | - L. Mechernene
- Département de Physique, Faculté des Sciences, Laboratoire de Recherche sur les Macromolécules, Université Aboubakr Belkaïd de Tlemcen, Tlemcen, Algeria
| | - F. Z. Abdoune
- Département de Physique, Faculté des Sciences, Laboratoire de Recherche sur les Macromolécules, Université Aboubakr Belkaïd de Tlemcen, Tlemcen, Algeria
| | - A. Berrayah
- Département de Physique, Faculté des Sciences, Laboratoire de Recherche sur les Macromolécules, Université Aboubakr Belkaïd de Tlemcen, Tlemcen, Algeria
| | - U. Maschke
- Unité Matériaux et Transformations (UMET), UMR CNRS N°8207, Bâtiment C6, Université des Sciences et Technologies de Lille, Villeneuve d’Ascq Cedex, France
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