Effectiveness of Sodium Acetate Treatment on the Mechanical Properties and Morphology of Natural Fiber-Reinforced Composites
This paper aims to investigate the ability of an eco-friendly and cheap treatment based on sodium acetate solutions to improve the mechanical properties of flax fiber-reinforced composites. Flax fibers were treated for 5 days (i.e., 120 h) at 25 °C with mildly alkaline solutions at 5%, 10% and 20% w...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-12-01
|
| Series: | Journal of Composites Science |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2504-477X/6/1/5 |
| _version_ | 1797492957918527488 |
|---|---|
| author | Dionisio Badagliacco Vincenzo Fiore Carmelo Sanfilippo Antonino Valenza |
| author_facet | Dionisio Badagliacco Vincenzo Fiore Carmelo Sanfilippo Antonino Valenza |
| author_sort | Dionisio Badagliacco |
| collection | DOAJ |
| description | This paper aims to investigate the ability of an eco-friendly and cheap treatment based on sodium acetate solutions to improve the mechanical properties of flax fiber-reinforced composites. Flax fibers were treated for 5 days (i.e., 120 h) at 25 °C with mildly alkaline solutions at 5%, 10% and 20% weight content of the sodium salt. Quasi-static tensile and flexural tests, Charpy impact tests and dynamical mechanical thermal (DMTA) tests were carried out to evaluate the mechanical properties of the resulting composites. Fourier transform infrared analysis (FTIR) was used to evaluate the chemical modification on the fibers surface due to the proposed treatment, whereas scanning electron microscope (SEM) and helium pycnometry were used to get useful information about the morphology of composites. It was found that the treatment with 5% solution of sodium acetate leads to the best mechanical performance and morphology of flax fiber-reinforced composites. SEM analysis confirmed these findings highlighting that composites reinforced with flax fibers treated in 5% sodium acetate solution show an improved morphology compared to the untreated ones. On the contrary, detrimental effects on the morphology as well as on the mechanical performance of composites were achieved by increasing the salt concentration of the treating solution. |
| first_indexed | 2024-03-10T01:13:05Z |
| format | Article |
| id | doaj.art-4e9d8ceb144d43adb872bafeb59f867c |
| institution | Directory Open Access Journal |
| issn | 2504-477X |
| language | English |
| last_indexed | 2024-03-10T01:13:05Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Composites Science |
| spelling | doaj.art-4e9d8ceb144d43adb872bafeb59f867c2023-11-23T14:14:40ZengMDPI AGJournal of Composites Science2504-477X2021-12-0161510.3390/jcs6010005Effectiveness of Sodium Acetate Treatment on the Mechanical Properties and Morphology of Natural Fiber-Reinforced CompositesDionisio Badagliacco0Vincenzo Fiore1Carmelo Sanfilippo2Antonino Valenza3Department of Engineering, University of Palermo, Viale delle Scienze, Edificio 6, 90128 Palermo, ItalyDepartment of Engineering, University of Palermo, Viale delle Scienze, Edificio 6, 90128 Palermo, ItalyDepartment of Engineering, University of Palermo, Viale delle Scienze, Edificio 6, 90128 Palermo, ItalyDepartment of Engineering, University of Palermo, Viale delle Scienze, Edificio 6, 90128 Palermo, ItalyThis paper aims to investigate the ability of an eco-friendly and cheap treatment based on sodium acetate solutions to improve the mechanical properties of flax fiber-reinforced composites. Flax fibers were treated for 5 days (i.e., 120 h) at 25 °C with mildly alkaline solutions at 5%, 10% and 20% weight content of the sodium salt. Quasi-static tensile and flexural tests, Charpy impact tests and dynamical mechanical thermal (DMTA) tests were carried out to evaluate the mechanical properties of the resulting composites. Fourier transform infrared analysis (FTIR) was used to evaluate the chemical modification on the fibers surface due to the proposed treatment, whereas scanning electron microscope (SEM) and helium pycnometry were used to get useful information about the morphology of composites. It was found that the treatment with 5% solution of sodium acetate leads to the best mechanical performance and morphology of flax fiber-reinforced composites. SEM analysis confirmed these findings highlighting that composites reinforced with flax fibers treated in 5% sodium acetate solution show an improved morphology compared to the untreated ones. On the contrary, detrimental effects on the morphology as well as on the mechanical performance of composites were achieved by increasing the salt concentration of the treating solution.https://www.mdpi.com/2504-477X/6/1/5flax fibersalkaline treatmentssodium acetatefiber–matrix adhesionmechanical performance |
| spellingShingle | Dionisio Badagliacco Vincenzo Fiore Carmelo Sanfilippo Antonino Valenza Effectiveness of Sodium Acetate Treatment on the Mechanical Properties and Morphology of Natural Fiber-Reinforced Composites Journal of Composites Science flax fibers alkaline treatments sodium acetate fiber–matrix adhesion mechanical performance |
| title | Effectiveness of Sodium Acetate Treatment on the Mechanical Properties and Morphology of Natural Fiber-Reinforced Composites |
| title_full | Effectiveness of Sodium Acetate Treatment on the Mechanical Properties and Morphology of Natural Fiber-Reinforced Composites |
| title_fullStr | Effectiveness of Sodium Acetate Treatment on the Mechanical Properties and Morphology of Natural Fiber-Reinforced Composites |
| title_full_unstemmed | Effectiveness of Sodium Acetate Treatment on the Mechanical Properties and Morphology of Natural Fiber-Reinforced Composites |
| title_short | Effectiveness of Sodium Acetate Treatment on the Mechanical Properties and Morphology of Natural Fiber-Reinforced Composites |
| title_sort | effectiveness of sodium acetate treatment on the mechanical properties and morphology of natural fiber reinforced composites |
| topic | flax fibers alkaline treatments sodium acetate fiber–matrix adhesion mechanical performance |
| url | https://www.mdpi.com/2504-477X/6/1/5 |
| work_keys_str_mv | AT dionisiobadagliacco effectivenessofsodiumacetatetreatmentonthemechanicalpropertiesandmorphologyofnaturalfiberreinforcedcomposites AT vincenzofiore effectivenessofsodiumacetatetreatmentonthemechanicalpropertiesandmorphologyofnaturalfiberreinforcedcomposites AT carmelosanfilippo effectivenessofsodiumacetatetreatmentonthemechanicalpropertiesandmorphologyofnaturalfiberreinforcedcomposites AT antoninovalenza effectivenessofsodiumacetatetreatmentonthemechanicalpropertiesandmorphologyofnaturalfiberreinforcedcomposites |