The influence of silica aerogels on physical, mechanical, and morphological properties of melt-spun POY and DTY polyester yarns
Thanks to over 90 vol% air content, aerogels are the lightest known solid state materials with low thermal conductivity and high surface area. Aerogels are also suitable candidates in fibrous blankets, construction, and thermoset composites, while their fragile characteristic limits their applicatio...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-08-01
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| Series: | Polymer Testing |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142941822001520 |
| _version_ | 1828336138254811136 |
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| author | Shahla Sedighi Akbar Khoddami Hossein Izadan Mohammad Ali Alsharif Mohammadreza Naeimirad |
| author_facet | Shahla Sedighi Akbar Khoddami Hossein Izadan Mohammad Ali Alsharif Mohammadreza Naeimirad |
| author_sort | Shahla Sedighi |
| collection | DOAJ |
| description | Thanks to over 90 vol% air content, aerogels are the lightest known solid state materials with low thermal conductivity and high surface area. Aerogels are also suitable candidates in fibrous blankets, construction, and thermoset composites, while their fragile characteristic limits their application in thermoplastic composites so far. In this study, silica aerogel-filled polyester nanocomposite filaments were produced through high-speed melt-spinning after twin-screw extrusion of their nanocomposite compounds, containing 0.4, 1, 2 and 4 wt% filler contents. This approach is a solution for overcoming to the dusting problems in aerogel/fiber blankets, aiming in insulation or other application perspectives. The compounding and melt-spinning trials resulted in successful fiber production (except for 4 wt% filler content). Microscopic observations showed a solid cross-section for the fibers (24 μm in diameter) while the aerogels caused a rough surface for the nanocomposite fibers along with hydrophobic characteristic (high contact angle). BET analysis showed 90% porosity for as received aerogels and 63% for the aerogels after processing with polymer. In the same line, densitometry confirmed the partial porosity of the aerogels in masterbatches and nanocomposite fibers. Mechanical characterizations showed that the fibers have acceptable performance after the spinning process. Thermal analysis results confirmed the presence of aerogels within the fibers. These developed nanocomposite fibers are suggested for future evaluations to be considered in different applications. |
| first_indexed | 2024-04-13T21:55:47Z |
| format | Article |
| id | doaj.art-c0cda4b3310d4223a914551f154773fe |
| institution | Directory Open Access Journal |
| issn | 0142-9418 |
| language | English |
| last_indexed | 2024-04-13T21:55:47Z |
| publishDate | 2022-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj.art-c0cda4b3310d4223a914551f154773fe2022-12-22T02:28:15ZengElsevierPolymer Testing0142-94182022-08-01112107628The influence of silica aerogels on physical, mechanical, and morphological properties of melt-spun POY and DTY polyester yarnsShahla Sedighi0Akbar Khoddami1Hossein Izadan2Mohammad Ali Alsharif3Mohammadreza Naeimirad4Department of Textile Engineering, Isfahan University of Technology, Isfahan, 84156-83111, IranDepartment of Textile Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran; Corresponding author.Department of Textile Engineering, Isfahan University of Technology, Isfahan, 84156-83111, IranDepartment of Textile Engineering, Isfahan University of Technology, Isfahan, 84156-83111, IranDepartment of Materials and Textile Engineering, Faculty of Engineering, Razi University, Kermanshah, Iran; Corresponding author.Thanks to over 90 vol% air content, aerogels are the lightest known solid state materials with low thermal conductivity and high surface area. Aerogels are also suitable candidates in fibrous blankets, construction, and thermoset composites, while their fragile characteristic limits their application in thermoplastic composites so far. In this study, silica aerogel-filled polyester nanocomposite filaments were produced through high-speed melt-spinning after twin-screw extrusion of their nanocomposite compounds, containing 0.4, 1, 2 and 4 wt% filler contents. This approach is a solution for overcoming to the dusting problems in aerogel/fiber blankets, aiming in insulation or other application perspectives. The compounding and melt-spinning trials resulted in successful fiber production (except for 4 wt% filler content). Microscopic observations showed a solid cross-section for the fibers (24 μm in diameter) while the aerogels caused a rough surface for the nanocomposite fibers along with hydrophobic characteristic (high contact angle). BET analysis showed 90% porosity for as received aerogels and 63% for the aerogels after processing with polymer. In the same line, densitometry confirmed the partial porosity of the aerogels in masterbatches and nanocomposite fibers. Mechanical characterizations showed that the fibers have acceptable performance after the spinning process. Thermal analysis results confirmed the presence of aerogels within the fibers. These developed nanocomposite fibers are suggested for future evaluations to be considered in different applications.http://www.sciencedirect.com/science/article/pii/S0142941822001520Silica aerogel (SA)Polyester (PET)Nanocomposite fibersMelt-spinningDust release |
| spellingShingle | Shahla Sedighi Akbar Khoddami Hossein Izadan Mohammad Ali Alsharif Mohammadreza Naeimirad The influence of silica aerogels on physical, mechanical, and morphological properties of melt-spun POY and DTY polyester yarns Polymer Testing Silica aerogel (SA) Polyester (PET) Nanocomposite fibers Melt-spinning Dust release |
| title | The influence of silica aerogels on physical, mechanical, and morphological properties of melt-spun POY and DTY polyester yarns |
| title_full | The influence of silica aerogels on physical, mechanical, and morphological properties of melt-spun POY and DTY polyester yarns |
| title_fullStr | The influence of silica aerogels on physical, mechanical, and morphological properties of melt-spun POY and DTY polyester yarns |
| title_full_unstemmed | The influence of silica aerogels on physical, mechanical, and morphological properties of melt-spun POY and DTY polyester yarns |
| title_short | The influence of silica aerogels on physical, mechanical, and morphological properties of melt-spun POY and DTY polyester yarns |
| title_sort | influence of silica aerogels on physical mechanical and morphological properties of melt spun poy and dty polyester yarns |
| topic | Silica aerogel (SA) Polyester (PET) Nanocomposite fibers Melt-spinning Dust release |
| url | http://www.sciencedirect.com/science/article/pii/S0142941822001520 |
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