Modification of poly(vinyl chloride) by mefenamic acid in presence of micro metallic oxides as self photostabilizer
To date, many approaches have been made to stabilize the chemical structure of PVC when exposed to sunlight in outdoor usage. This work includes utilizing mefenamic acid (1 % per polymer weight) as a new photo stabilizer unit to adjust PVC to enhance resistance to change under UV exposure. Modificat...
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KeAi Communications Co., Ltd.
2023-01-01
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Online Access: | http://www.sciencedirect.com/science/article/pii/S258929912300006X |
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author | Mohammed H. Al-Mashhadani Dhuha H. Fadhil Ahmed A. Ahmed Amani A. Husain Hassan Hashim Emad Yousif Muna Bufaroosha |
author_facet | Mohammed H. Al-Mashhadani Dhuha H. Fadhil Ahmed A. Ahmed Amani A. Husain Hassan Hashim Emad Yousif Muna Bufaroosha |
author_sort | Mohammed H. Al-Mashhadani |
collection | DOAJ |
description | To date, many approaches have been made to stabilize the chemical structure of PVC when exposed to sunlight in outdoor usage. This work includes utilizing mefenamic acid (1 % per polymer weight) as a new photo stabilizer unit to adjust PVC to enhance resistance to change under UV exposure. Modification by attaching a new unit that contains an aromatic substance could protect the polymer from UV light due to its ability to absorb it. Positive results were obtained, as the interaction between mefenamic acid and PVC succeeded, using the FTIR technique to characterize the chemical structure of the product. FTIR spectrum of modified PVC shows the disappearance of (OH) band in the region above 3200 cm−1 which is clear evidence that the connection between the polymer and mefenamic acid has happened through the OH group. In addition, we have investigated the influence of microparticle metallic oxides such as TiO2, and Cr2O3, using only 1 % per modified polymer weight, on the photodegradation process of PVC materials. Several approaches have been utilized to investigate the photo-stability of studied materials which are FTIR functional group indices, weight-loss percentage, microscopic images, SEM, and AFM. They demonstrated that modified PVC gives better stability after exposure to UV in comparison to unmodified PVC. It's interesting to note that adding titanium dioxide to modified PVC has increased the amount of UV protection by acting as a UV shielding agent and blocking the light's path to the polymer. Thus, chromium oxide has demonstrated the opposite findings because it functions as a photo-catalytic reagent that accelerated the photo-degradation process. This result may be interpreted as the decomposition of waste PVC, which poses a major threat to the marine ecosystem. |
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language | English |
last_indexed | 2024-04-10T05:34:04Z |
publishDate | 2023-01-01 |
publisher | KeAi Communications Co., Ltd. |
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series | Materials Science for Energy Technologies |
spelling | doaj.art-f63f7a5fe064499b8cb14dea336843432023-03-07T04:06:26ZengKeAi Communications Co., Ltd.Materials Science for Energy Technologies2589-29912023-01-016318330Modification of poly(vinyl chloride) by mefenamic acid in presence of micro metallic oxides as self photostabilizerMohammed H. Al-Mashhadani0Dhuha H. Fadhil1Ahmed A. Ahmed2Amani A. Husain3Hassan Hashim4Emad Yousif5Muna Bufaroosha6Department of Chemistry, College of Science, Al-Nahrain University, P. O. Box: 64021, Baghdad, IraqDepartment of Chemistry, College of Science, Al-Nahrain University, P. O. Box: 64021, Baghdad, IraqDepartment of Chemistry, College of Science, Al-Nahrain University, P. O. Box: 64021, Baghdad, IraqPolymer Research Unit, College of Science, Al-Mustansiriyah University, 10052 Baghdad, IraqDepartment of Physics, College of Science, Al-Nahrain University, Baghdad 64021, IraqDepartment of Chemistry, College of Science, Al-Nahrain University, P. O. Box: 64021, Baghdad, IraqDepartment of Chemistry, College of Science, UAE University, Al-Ain, United Arab Emirates; Corresponding author.To date, many approaches have been made to stabilize the chemical structure of PVC when exposed to sunlight in outdoor usage. This work includes utilizing mefenamic acid (1 % per polymer weight) as a new photo stabilizer unit to adjust PVC to enhance resistance to change under UV exposure. Modification by attaching a new unit that contains an aromatic substance could protect the polymer from UV light due to its ability to absorb it. Positive results were obtained, as the interaction between mefenamic acid and PVC succeeded, using the FTIR technique to characterize the chemical structure of the product. FTIR spectrum of modified PVC shows the disappearance of (OH) band in the region above 3200 cm−1 which is clear evidence that the connection between the polymer and mefenamic acid has happened through the OH group. In addition, we have investigated the influence of microparticle metallic oxides such as TiO2, and Cr2O3, using only 1 % per modified polymer weight, on the photodegradation process of PVC materials. Several approaches have been utilized to investigate the photo-stability of studied materials which are FTIR functional group indices, weight-loss percentage, microscopic images, SEM, and AFM. They demonstrated that modified PVC gives better stability after exposure to UV in comparison to unmodified PVC. It's interesting to note that adding titanium dioxide to modified PVC has increased the amount of UV protection by acting as a UV shielding agent and blocking the light's path to the polymer. Thus, chromium oxide has demonstrated the opposite findings because it functions as a photo-catalytic reagent that accelerated the photo-degradation process. This result may be interpreted as the decomposition of waste PVC, which poses a major threat to the marine ecosystem.http://www.sciencedirect.com/science/article/pii/S258929912300006XUV-absorberMefenamic acidPVCPhotodegradationTiO2Alkene group indices |
spellingShingle | Mohammed H. Al-Mashhadani Dhuha H. Fadhil Ahmed A. Ahmed Amani A. Husain Hassan Hashim Emad Yousif Muna Bufaroosha Modification of poly(vinyl chloride) by mefenamic acid in presence of micro metallic oxides as self photostabilizer Materials Science for Energy Technologies UV-absorber Mefenamic acid PVC Photodegradation TiO2 Alkene group indices |
title | Modification of poly(vinyl chloride) by mefenamic acid in presence of micro metallic oxides as self photostabilizer |
title_full | Modification of poly(vinyl chloride) by mefenamic acid in presence of micro metallic oxides as self photostabilizer |
title_fullStr | Modification of poly(vinyl chloride) by mefenamic acid in presence of micro metallic oxides as self photostabilizer |
title_full_unstemmed | Modification of poly(vinyl chloride) by mefenamic acid in presence of micro metallic oxides as self photostabilizer |
title_short | Modification of poly(vinyl chloride) by mefenamic acid in presence of micro metallic oxides as self photostabilizer |
title_sort | modification of poly vinyl chloride by mefenamic acid in presence of micro metallic oxides as self photostabilizer |
topic | UV-absorber Mefenamic acid PVC Photodegradation TiO2 Alkene group indices |
url | http://www.sciencedirect.com/science/article/pii/S258929912300006X |
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