Effect of alkaline treatment on the thermo-physicochemical and mechanical properties of biochar powder/Washingtonia robusta fibers/PLA hybrid biocomposites
Replacing plastic products with fully biodegradable products remains a challenge in our daily lives. Biodegradable hybrid bio composites are designed for various structural and non-structural applications such as car interiors, filaments for 3D printers, biomedical, sports and electronic products, g...
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424028217 |
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| author | Isma Dembri Ahmed Belaadi Abdelaziz Lekrine Mohammad Jawaid Ahmad Safwan Ismail Djamel Ghernaout |
| author_facet | Isma Dembri Ahmed Belaadi Abdelaziz Lekrine Mohammad Jawaid Ahmad Safwan Ismail Djamel Ghernaout |
| author_sort | Isma Dembri |
| collection | DOAJ |
| description | Replacing plastic products with fully biodegradable products remains a challenge in our daily lives. Biodegradable hybrid bio composites are designed for various structural and non-structural applications such as car interiors, filaments for 3D printers, biomedical, sports and electronic products, green building materials and food packaging. In this work hybrid composites fabricated using polylactic acid (PLA) matrix reinforced with short plant fibers from the Washingtonia robusta (WR) palm tree and biochar powder (BC) with grain diameters less than 0.6 μm obtained from WR palm waste after carbonization at 300 °C. Initially, a portion of the untreated plant fibers was retained, while the other portion was treated with NaOH (1, 2, 3%) for 15 h. Indeed, the untreated and alkali-treated fibers were observed by SEM and then characterized by thermogravimetric analysis/differential scanning calorimetry. Fourier transform infrared showed physical and chemical changes with surface degradation of the WR treated at higher concentrations (3% NaOH). In addition, establish the relationship between the alkali treatments of the biocomposite reinforcement fibers and the improvement of the mechanical performance of these materials. The best results obtained for the developed biocomposite hybrid products are those of BTR3, for mechanical characteristics such as traction, flexural strength and Izod, with values of 39.56 MPa and 74.43 MPa, and 3.26 kJ/m2 respectively; and 2.30 MPa as elastic stress, also for water absorption with a percentage of 8.3%. The percentages of the alkaline treatments used revealed that the BTR3 model presents the best physical-chemical and mechanical behavior of these new materials. |
| format | Article |
| id | doaj-art-117f38adac3e40fd9b1f07869bb441d2 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-117f38adac3e40fd9b1f07869bb441d22025-08-20T01:57:25ZengElsevierJournal of Materials Research and Technology2238-78542024-11-01339735975110.1016/j.jmrt.2024.12.018Effect of alkaline treatment on the thermo-physicochemical and mechanical properties of biochar powder/Washingtonia robusta fibers/PLA hybrid biocompositesIsma Dembri0Ahmed Belaadi1Abdelaziz Lekrine2Mohammad Jawaid3Ahmad Safwan Ismail4Djamel Ghernaout5Department of Mechanical Engineering, Faculty of Technology, University 20 August 1955, Skikda, El-Hadaiek, Skikda, AlgeriaDepartment of Mechanical Engineering, Faculty of Technology, University 20 August 1955, Skikda, El-Hadaiek, Skikda, Algeria; Corresponding author.Department of Mechanical Engineering, Faculty of Technology, University 20 August 1955, Skikda, El-Hadaiek, Skikda, AlgeriaChemical and Petroleum Engineering Department, College of Engineering, United Arab Emirates University (UAEU), PO Box, 15551, Al Ain, United Arab Emirates; Corresponding author.Department of Bio-composite Laboratory, Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, MalaysiaChemical Engineering Department, College of Engineering, University of Ha'il, PO Box 2440, Ha'il, 81441, Saudi Arabia; Chemical Engineering Department, Faculty of Engineering, University of Blida, PO Box 270, Blida, 09000, AlgeriaReplacing plastic products with fully biodegradable products remains a challenge in our daily lives. Biodegradable hybrid bio composites are designed for various structural and non-structural applications such as car interiors, filaments for 3D printers, biomedical, sports and electronic products, green building materials and food packaging. In this work hybrid composites fabricated using polylactic acid (PLA) matrix reinforced with short plant fibers from the Washingtonia robusta (WR) palm tree and biochar powder (BC) with grain diameters less than 0.6 μm obtained from WR palm waste after carbonization at 300 °C. Initially, a portion of the untreated plant fibers was retained, while the other portion was treated with NaOH (1, 2, 3%) for 15 h. Indeed, the untreated and alkali-treated fibers were observed by SEM and then characterized by thermogravimetric analysis/differential scanning calorimetry. Fourier transform infrared showed physical and chemical changes with surface degradation of the WR treated at higher concentrations (3% NaOH). In addition, establish the relationship between the alkali treatments of the biocomposite reinforcement fibers and the improvement of the mechanical performance of these materials. The best results obtained for the developed biocomposite hybrid products are those of BTR3, for mechanical characteristics such as traction, flexural strength and Izod, with values of 39.56 MPa and 74.43 MPa, and 3.26 kJ/m2 respectively; and 2.30 MPa as elastic stress, also for water absorption with a percentage of 8.3%. The percentages of the alkaline treatments used revealed that the BTR3 model presents the best physical-chemical and mechanical behavior of these new materials.http://www.sciencedirect.com/science/article/pii/S2238785424028217Washingtonia robustaBiocompositeBioplastic/PLA matrixthermal propertiesMechanical properties |
| spellingShingle | Isma Dembri Ahmed Belaadi Abdelaziz Lekrine Mohammad Jawaid Ahmad Safwan Ismail Djamel Ghernaout Effect of alkaline treatment on the thermo-physicochemical and mechanical properties of biochar powder/Washingtonia robusta fibers/PLA hybrid biocomposites Journal of Materials Research and Technology Washingtonia robusta Biocomposite Bioplastic/PLA matrix thermal properties Mechanical properties |
| title | Effect of alkaline treatment on the thermo-physicochemical and mechanical properties of biochar powder/Washingtonia robusta fibers/PLA hybrid biocomposites |
| title_full | Effect of alkaline treatment on the thermo-physicochemical and mechanical properties of biochar powder/Washingtonia robusta fibers/PLA hybrid biocomposites |
| title_fullStr | Effect of alkaline treatment on the thermo-physicochemical and mechanical properties of biochar powder/Washingtonia robusta fibers/PLA hybrid biocomposites |
| title_full_unstemmed | Effect of alkaline treatment on the thermo-physicochemical and mechanical properties of biochar powder/Washingtonia robusta fibers/PLA hybrid biocomposites |
| title_short | Effect of alkaline treatment on the thermo-physicochemical and mechanical properties of biochar powder/Washingtonia robusta fibers/PLA hybrid biocomposites |
| title_sort | effect of alkaline treatment on the thermo physicochemical and mechanical properties of biochar powder washingtonia robusta fibers pla hybrid biocomposites |
| topic | Washingtonia robusta Biocomposite Bioplastic/PLA matrix thermal properties Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424028217 |
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