Use of Flow Modeling to Optimize the Twin-Screw Extrusion Process for the Preparation of Lignocellulosic Fiber-Based Composites
Thermoplastic polymers reinforced by lignocellulosic fibers are increasingly used to replace conventional composites based on carbon or glass fibers. These materials are generally prepared by dispersing the fibers into the polymer matrix by melt mixing in a twin-screw extrusion process. However, dur...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2020-07-01
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| Series: | Frontiers in Materials |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fmats.2020.00218/full |
| _version_ | 1818023733884878848 |
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| author | Françoise Berzin Chantal David Bruno Vergnes |
| author_facet | Françoise Berzin Chantal David Bruno Vergnes |
| author_sort | Françoise Berzin |
| collection | DOAJ |
| description | Thermoplastic polymers reinforced by lignocellulosic fibers are increasingly used to replace conventional composites based on carbon or glass fibers. These materials are generally prepared by dispersing the fibers into the polymer matrix by melt mixing in a twin-screw extrusion process. However, during the process, a significant breakage occurs, leading to a reduction in the length, and diameter of the bundles and/or individual fibers. As the mechanical properties of the composite depend, among other, on the fiber morphology, it is important to understand and control the breakage mechanisms during the compounding process. In this paper, we show how the use of a thermomechanical model of twin-screw extrusion coupled with evolution laws of the fiber dimensions makes it possible to calculate the variation in the length and the diameter of the fibers, according to the local values of the flow parameters (shear rate, residence time, temperature, etc.). It is thus possible to define the best processing conditions (screw speed, feed rate, and barrel temperature) or the best screw profile to limit fiber degradation and prepare composites with optimal properties. |
| first_indexed | 2024-12-10T03:49:01Z |
| format | Article |
| id | doaj.art-8a27fc8d5d4742fbba20c8112800ea84 |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-12-10T03:49:01Z |
| publishDate | 2020-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Materials |
| spelling | doaj.art-8a27fc8d5d4742fbba20c8112800ea842022-12-22T02:03:18ZengFrontiers Media S.A.Frontiers in Materials2296-80162020-07-01710.3389/fmats.2020.00218562534Use of Flow Modeling to Optimize the Twin-Screw Extrusion Process for the Preparation of Lignocellulosic Fiber-Based CompositesFrançoise Berzin0Chantal David1Bruno Vergnes2FARE, University of Reims Champagne Ardenne, INRAE, Reims, FranceSciences Computers Consultants, Saint-Étienne, FranceMINES ParisTech, PSL Research University, Sophia Antipolis, FranceThermoplastic polymers reinforced by lignocellulosic fibers are increasingly used to replace conventional composites based on carbon or glass fibers. These materials are generally prepared by dispersing the fibers into the polymer matrix by melt mixing in a twin-screw extrusion process. However, during the process, a significant breakage occurs, leading to a reduction in the length, and diameter of the bundles and/or individual fibers. As the mechanical properties of the composite depend, among other, on the fiber morphology, it is important to understand and control the breakage mechanisms during the compounding process. In this paper, we show how the use of a thermomechanical model of twin-screw extrusion coupled with evolution laws of the fiber dimensions makes it possible to calculate the variation in the length and the diameter of the fibers, according to the local values of the flow parameters (shear rate, residence time, temperature, etc.). It is thus possible to define the best processing conditions (screw speed, feed rate, and barrel temperature) or the best screw profile to limit fiber degradation and prepare composites with optimal properties.https://www.frontiersin.org/article/10.3389/fmats.2020.00218/fulllignocellulosic fibersextrusionmodelingbreakageoptimization |
| spellingShingle | Françoise Berzin Chantal David Bruno Vergnes Use of Flow Modeling to Optimize the Twin-Screw Extrusion Process for the Preparation of Lignocellulosic Fiber-Based Composites Frontiers in Materials lignocellulosic fibers extrusion modeling breakage optimization |
| title | Use of Flow Modeling to Optimize the Twin-Screw Extrusion Process for the Preparation of Lignocellulosic Fiber-Based Composites |
| title_full | Use of Flow Modeling to Optimize the Twin-Screw Extrusion Process for the Preparation of Lignocellulosic Fiber-Based Composites |
| title_fullStr | Use of Flow Modeling to Optimize the Twin-Screw Extrusion Process for the Preparation of Lignocellulosic Fiber-Based Composites |
| title_full_unstemmed | Use of Flow Modeling to Optimize the Twin-Screw Extrusion Process for the Preparation of Lignocellulosic Fiber-Based Composites |
| title_short | Use of Flow Modeling to Optimize the Twin-Screw Extrusion Process for the Preparation of Lignocellulosic Fiber-Based Composites |
| title_sort | use of flow modeling to optimize the twin screw extrusion process for the preparation of lignocellulosic fiber based composites |
| topic | lignocellulosic fibers extrusion modeling breakage optimization |
| url | https://www.frontiersin.org/article/10.3389/fmats.2020.00218/full |
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