Measure of porosity in flax fibres reinforced polylactic acid biocomposites
| Autor: | Antoine Kervoelen, Giuliano Allegri, Victor Gager, Adam W. Perriman, Antoine Le Duigou, Hind Saidani-Scott, Fabrizio Scarpa, Túlio Hallak Panzera, Victor Popineau, Charles M Y De Kergariou |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
porosity Scanning electron microscope 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Effective porosity 0104 chemical sciences law.invention chemistry.chemical_compound Optical microscope Polylactic acid chemistry Mechanics of Materials law Ultimate tensile strength Ceramics and Composites bio-composites Gravimetric analysis Composite material 0210 nano-technology Porosity Thermoforming |
| Zdroj: | De Kergariou, C M Y, Le Duigou, A, Popineau, V, Gager, V, Kervoelen, A, Perriman, A W, Saidani-Scott, H, Allegri, G, Panzera, T & Scarpa, F L 2021, ' Measure of porosity in flax fibres reinforced polylactic acid biocomposites ', Composites Part A: Applied Science and Manufacturing, vol. 141, 106183, pp. 1 . https://doi.org/10.1016/j.compositesa.2020.106183, https://doi.org/10.1016/j.compositesa.2020.106183 |
| DOI: | 10.1016/j.compositesa.2020.106183 |
| Popis: | The paper describes an optimised strategy to measure the porosity in natural fibre composites. Particular emphasis is placed on thermoformed flax fibres reinforced poly-lactic acid (FFRPLA) laminates. Six different methods to measure the porosity were evaluated and compared: gravitometry in ethanol and in water, scanning electron microscopy (SEM), computed tomography (CT) scanning, optical microscope measurements and inverse identification from tensile tests. The measurements indicate porosity levels ranging from 3.5% to 21%. A measurement approach consisting of defining lower and upper bounds of porosity provided by CT-scanning and gravimetric measurements in water was identified. The lower bound of this interval represents the best approximation of the effective porosity, which is 8.3 ± 2.3% for the FFRPLA tested in this work. The approach could be also extended to other similar classes of natural fibre reinforced composites. |
| Databáze: | OpenAIRE |
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