Study of the Ultraviolet Effect and Thermal Analysis on Polypropylene Nonwoven Geotextile
The use of polymeric materials such as geosynthetics in infrastructure works has been increasing over the last decades, as they bring down costs and provide long-term benefits. However, the aging of polymers raises the question of its long-term durability and for this reason researchers have been st...
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| Veröffentlicht in: | Materials 2021-02, Vol.14 (5), p.1080, Article 1080 |
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| creator | Valentin, Clever Aparecido Kobelnik, Marcelo Franco, Yara Barbosa Lavoie, Fernando Luiz da Silva, Jefferson Lins da Luz, Marta Pereira |
| description | The use of polymeric materials such as geosynthetics in infrastructure works has been increasing over the last decades, as they bring down costs and provide long-term benefits. However, the aging of polymers raises the question of its long-term durability and for this reason researchers have been studying a sort of techniques to search for the required renewal time. This paper examined a commercial polypropylene (PP) nonwoven geotextile before and after 500 h and 1000 h exposure to ultraviolet (UV) light by performing laboratory accelerated ultraviolet-aging tests. The state of the polymeric material after UV exposure was studied through a wide set of tests, including mechanical and physical tests and thermoanalytical tests and scanning electron microscopy analysis. The calorimetric evaluations (DSC) showed distinct behaviors in sample melting points, attributed to the UV radiation effect on the aged samples. Furthermore, after exposure, the samples presented low thermal stability in the thermomechanical analysis (TMA), with a continuing decrease in their thicknesses. The tensile tests showed an increase in material stiffness after exposition. This study demonstrates that UV aging has effects on the properties of the polypropylene polymer. |
| doi_str_mv | 10.3390/ma14051080 |
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However, the aging of polymers raises the question of its long-term durability and for this reason researchers have been studying a sort of techniques to search for the required renewal time. This paper examined a commercial polypropylene (PP) nonwoven geotextile before and after 500 h and 1000 h exposure to ultraviolet (UV) light by performing laboratory accelerated ultraviolet-aging tests. The state of the polymeric material after UV exposure was studied through a wide set of tests, including mechanical and physical tests and thermoanalytical tests and scanning electron microscopy analysis. The calorimetric evaluations (DSC) showed distinct behaviors in sample melting points, attributed to the UV radiation effect on the aged samples. Furthermore, after exposure, the samples presented low thermal stability in the thermomechanical analysis (TMA), with a continuing decrease in their thicknesses. The tensile tests showed an increase in material stiffness after exposition. This study demonstrates that UV aging has effects on the properties of the polypropylene polymer.</description><identifier>ISSN: 1996-1944</identifier><identifier>EISSN: 1996-1944</identifier><identifier>DOI: 10.3390/ma14051080</identifier><identifier>PMID: 33652585</identifier><language>eng</language><publisher>BASEL: Mdpi</publisher><subject>Accelerated aging tests ; Accelerated tests ; Aging ; Behavior ; Carbon black ; Chemistry ; Chemistry, Physical ; Decomposition ; Exposure ; Gases ; Geosynthetics ; Geotechnical fabrics ; Laboratories ; Materials Science ; Materials Science, Multidisciplinary ; Mechanical properties ; Melting points ; Metallurgy & Metallurgical Engineering ; Nitrogen ; Physical Sciences ; Physical tests ; Physics ; Physics, Applied ; Physics, Condensed Matter ; Polymers ; Polypropylene ; Scanning electron microscopy ; Science & Technology ; Stability analysis ; Stiffness ; Technology ; Tensile tests ; Thermal analysis ; Thermal stability ; Thermomechanical analysis ; Ultraviolet radiation</subject><ispartof>Materials, 2021-02, Vol.14 (5), p.1080, Article 1080</ispartof><rights>2021. This work is licensed under http://creativecommons.org/licenses/by/3.0/ (the “License”). 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| subjects | Accelerated aging tests Accelerated tests Aging Behavior Carbon black Chemistry Chemistry, Physical Decomposition Exposure Gases Geosynthetics Geotechnical fabrics Laboratories Materials Science Materials Science, Multidisciplinary Mechanical properties Melting points Metallurgy & Metallurgical Engineering Nitrogen Physical Sciences Physical tests Physics Physics, Applied Physics, Condensed Matter Polymers Polypropylene Scanning electron microscopy Science & Technology Stability analysis Stiffness Technology Tensile tests Thermal analysis Thermal stability Thermomechanical analysis Ultraviolet radiation |
| title | Study of the Ultraviolet Effect and Thermal Analysis on Polypropylene Nonwoven Geotextile |
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