Effect of Alkaline Treatment on Mechanical and Thermal Properties of Miswak (Salvadora persica) Fiber-Reinforced Polylactic Acid.
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| Title: | Effect of Alkaline Treatment on Mechanical and Thermal Properties of Miswak (Salvadora persica) Fiber-Reinforced Polylactic Acid. |
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| Authors: | Rafiqah, S. Ayu1 (AUTHOR) 95difaz@gmail.com, Diyana, A. F. Nur1 (AUTHOR), Abdan, Khalina1,2 (AUTHOR) ayurafiqah@upm.edu.my, Sapuan, S. M.3 (AUTHOR) sapuan@upm.edu.my |
| Source: | Polymers (20734360). May2023, Vol. 15 Issue 9, p2228. 16p. |
| Subjects: | Polylactic acid, Thermal properties, Scanning electron microscopes, Interfacial bonding, Fibrous composites, Surface preparation |
| Abstract: | This study examines the effects of alkaline treatment on the mechanical and thermal properties of miswak fiber-reinforced polylactic acid. The treatment was performed with three distinct concentrations of sodium hydroxide (NaOH): 1 wt %, 2 wt %, and 3 wt %. The difficulties of interaction between the surface of the fiber and the matrix, which led to this treatment, is caused by miswak fiber's hydrophilic character, which impedes its ability to bind with hydrophobic polylactic acid. FTIR, tensile, TGA, and DMA measurements were used to characterize the composite samples. A scanning electron microscope (SEM) was used to examine the microstructures of many broken samples. The treatment is not yet especially effective in enhancing interfacial bonding, as seen by the uneven tensile strength data. The effect of the treated fiber surface significantly improves the tensile strength of miswak fiber-reinforced PLA composites. Tensile strength improves by 18.01%, 6.48%, and 14.50%, respectively, for 1 wt %, 2 wt %, and 3 wt %. Only 2 wt %-treated fiber exhibits an increase of 0.7% in tensile modulus. The modulus decreases by 4.15 % at 1 wt % and by 19.7% at 3 wt %, respectively. The TGA curve for alkali-treated fiber composites demonstrates a slight increase in thermal stability when compared to untreated fiber composites at high temperatures. For DMA, the composites with surface treatment have higher storage moduli than the composite with untreated miswak fiber, especially for the PLA reinforced with 2 wt % alkali miswak fiber, proving the effectiveness of the treatment. [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.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 163686244 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Effect of Alkaline Treatment on Mechanical and Thermal Properties of Miswak (Salvadora persica) Fiber-Reinforced Polylactic Acid. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Rafiqah%2C+S%2E+Ayu%22">Rafiqah, S. Ayu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 95difaz@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Diyana%2C+A%2E+F%2E+Nur%22">Diyana, A. F. Nur</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Abdan%2C+Khalina%22">Abdan, Khalina</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> ayurafiqah@upm.edu.my</i><br /><searchLink fieldCode="AR" term="%22Sapuan%2C+S%2E+M%2E%22">Sapuan, S. M.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> sapuan@upm.edu.my</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. May2023, Vol. 15 Issue 9, p2228. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Polylactic+acid%22">Polylactic acid</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+properties%22">Thermal properties</searchLink><br /><searchLink fieldCode="DE" term="%22Scanning+electron+microscopes%22">Scanning electron microscopes</searchLink><br /><searchLink fieldCode="DE" term="%22Interfacial+bonding%22">Interfacial bonding</searchLink><br /><searchLink fieldCode="DE" term="%22Fibrous+composites%22">Fibrous composites</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+preparation%22">Surface preparation</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This study examines the effects of alkaline treatment on the mechanical and thermal properties of miswak fiber-reinforced polylactic acid. The treatment was performed with three distinct concentrations of sodium hydroxide (NaOH): 1 wt %, 2 wt %, and 3 wt %. The difficulties of interaction between the surface of the fiber and the matrix, which led to this treatment, is caused by miswak fiber's hydrophilic character, which impedes its ability to bind with hydrophobic polylactic acid. FTIR, tensile, TGA, and DMA measurements were used to characterize the composite samples. A scanning electron microscope (SEM) was used to examine the microstructures of many broken samples. The treatment is not yet especially effective in enhancing interfacial bonding, as seen by the uneven tensile strength data. The effect of the treated fiber surface significantly improves the tensile strength of miswak fiber-reinforced PLA composites. Tensile strength improves by 18.01%, 6.48%, and 14.50%, respectively, for 1 wt %, 2 wt %, and 3 wt %. Only 2 wt %-treated fiber exhibits an increase of 0.7% in tensile modulus. The modulus decreases by 4.15 % at 1 wt % and by 19.7% at 3 wt %, respectively. The TGA curve for alkali-treated fiber composites demonstrates a slight increase in thermal stability when compared to untreated fiber composites at high temperatures. For DMA, the composites with surface treatment have higher storage moduli than the composite with untreated miswak fiber, especially for the PLA reinforced with 2 wt % alkali miswak fiber, proving the effectiveness of the treatment. [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/polym15092228 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 2228 Subjects: – SubjectFull: Polylactic acid Type: general – SubjectFull: Thermal properties Type: general – SubjectFull: Scanning electron microscopes Type: general – SubjectFull: Interfacial bonding Type: general – SubjectFull: Fibrous composites Type: general – SubjectFull: Surface preparation Type: general Titles: – TitleFull: Effect of Alkaline Treatment on Mechanical and Thermal Properties of Miswak (Salvadora persica) Fiber-Reinforced Polylactic Acid. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Rafiqah, S. Ayu – PersonEntity: Name: NameFull: Diyana, A. F. Nur – PersonEntity: Name: NameFull: Abdan, Khalina – PersonEntity: Name: NameFull: Sapuan, S. M. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 20734360 Numbering: – Type: volume Value: 15 – Type: issue Value: 9 Titles: – TitleFull: Polymers (20734360) Type: main |
| ResultId | 1 |
