Bio-Based Rigid Polyurethane Foam Composites Reinforced with Bleached Curauá Fiber
This study aims to evaluate the influence of using a bleached Curauá fiber (CF) as filler in a novel rigid polyurethane foam (RPUF) composite. The influence of 0.1, 0.5 and 1 wt.% of the reinforcements on the processing characteristics, cellular structure, mechanical, dynamic-mechanical, thermal, an...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/22/20/11203 |
| _version_ | 1797514325293793280 |
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| author | Sylwia Członka Eduardo Fischer Kerche Roberta Motta Neves Anna Strąkowska Krzysztof Strzelec |
| author_facet | Sylwia Członka Eduardo Fischer Kerche Roberta Motta Neves Anna Strąkowska Krzysztof Strzelec |
| author_sort | Sylwia Członka |
| collection | DOAJ |
| description | This study aims to evaluate the influence of using a bleached Curauá fiber (CF) as filler in a novel rigid polyurethane foam (RPUF) composite. The influence of 0.1, 0.5 and 1 wt.% of the reinforcements on the processing characteristics, cellular structure, mechanical, dynamic-mechanical, thermal, and flame behaviors were assessed and discussed for RPUF freely expanded. The results showed that the use of 0.5 wt.% of CF resulted in RPUF with smoother cell structure with low differences on the processing times and viscosity for the filled pre-polyol. These morphological features were responsible for the gains in mechanical properties, in both parallel and perpendicular rise directions, and better viscoelastic characteristics. Despite the gains, higher thermal conductivity and lower flammability were reported for the developed RPUF composites, related to the high content of cellulose and hemicellulose on the bleached CF chemical composition. This work shows the possibility of using a Brazilian vegetable fiber, with low exploration for the manufacturing of composite materials with improved properties. The developed RPUF presents high applicability as enhanced cores for the manufacturing of structural sandwich panels, mainly used in civil, aircraft, and marine industries. |
| first_indexed | 2024-03-10T06:29:34Z |
| format | Article |
| id | doaj.art-28186f110dc74337b5104d20db323e00 |
| institution | Directory Open Access Journal |
| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-10T06:29:34Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Molecular Sciences |
| spelling | doaj.art-28186f110dc74337b5104d20db323e002023-11-22T18:35:38ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672021-10-0122201120310.3390/ijms222011203Bio-Based Rigid Polyurethane Foam Composites Reinforced with Bleached Curauá FiberSylwia Członka0Eduardo Fischer Kerche1Roberta Motta Neves2Anna Strąkowska3Krzysztof Strzelec4Faculty of Chemistry, Institute of Polymer and Dye Technology, Lodz University of Technology, Stefanowskiego 12/16, 90-924 Lodz, PolandPPGE3M, Federal University of Rio Grande do Sul—UFRGS, Av. Bento Gonçalves 9500, Porto Alegre 91501-970, BrazilPPGE3M, Federal University of Rio Grande do Sul—UFRGS, Av. Bento Gonçalves 9500, Porto Alegre 91501-970, BrazilFaculty of Chemistry, Institute of Polymer and Dye Technology, Lodz University of Technology, Stefanowskiego 12/16, 90-924 Lodz, PolandFaculty of Chemistry, Institute of Polymer and Dye Technology, Lodz University of Technology, Stefanowskiego 12/16, 90-924 Lodz, PolandThis study aims to evaluate the influence of using a bleached Curauá fiber (CF) as filler in a novel rigid polyurethane foam (RPUF) composite. The influence of 0.1, 0.5 and 1 wt.% of the reinforcements on the processing characteristics, cellular structure, mechanical, dynamic-mechanical, thermal, and flame behaviors were assessed and discussed for RPUF freely expanded. The results showed that the use of 0.5 wt.% of CF resulted in RPUF with smoother cell structure with low differences on the processing times and viscosity for the filled pre-polyol. These morphological features were responsible for the gains in mechanical properties, in both parallel and perpendicular rise directions, and better viscoelastic characteristics. Despite the gains, higher thermal conductivity and lower flammability were reported for the developed RPUF composites, related to the high content of cellulose and hemicellulose on the bleached CF chemical composition. This work shows the possibility of using a Brazilian vegetable fiber, with low exploration for the manufacturing of composite materials with improved properties. The developed RPUF presents high applicability as enhanced cores for the manufacturing of structural sandwich panels, mainly used in civil, aircraft, and marine industries.https://www.mdpi.com/1422-0067/22/20/11203rigid polyurethane foamscellular compositebleached Curauá fiberhigh-performance foams |
| spellingShingle | Sylwia Członka Eduardo Fischer Kerche Roberta Motta Neves Anna Strąkowska Krzysztof Strzelec Bio-Based Rigid Polyurethane Foam Composites Reinforced with Bleached Curauá Fiber International Journal of Molecular Sciences rigid polyurethane foams cellular composite bleached Curauá fiber high-performance foams |
| title | Bio-Based Rigid Polyurethane Foam Composites Reinforced with Bleached Curauá Fiber |
| title_full | Bio-Based Rigid Polyurethane Foam Composites Reinforced with Bleached Curauá Fiber |
| title_fullStr | Bio-Based Rigid Polyurethane Foam Composites Reinforced with Bleached Curauá Fiber |
| title_full_unstemmed | Bio-Based Rigid Polyurethane Foam Composites Reinforced with Bleached Curauá Fiber |
| title_short | Bio-Based Rigid Polyurethane Foam Composites Reinforced with Bleached Curauá Fiber |
| title_sort | bio based rigid polyurethane foam composites reinforced with bleached curaua fiber |
| topic | rigid polyurethane foams cellular composite bleached Curauá fiber high-performance foams |
| url | https://www.mdpi.com/1422-0067/22/20/11203 |
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