Determination of Molecular Weight and Viscosity of Irradiated Polystyrene
The varied applications of polystyrene in various fields of life led to examining the cause of radiation influence on some rheological behavior of commercial Polystyrene (PS) solution in the chloroform (CHCl3) solvent. Polystyrene grains shape samples were irradiated using the radioactive eleme...
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| Format: | Article |
| Language: | Arabic |
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College of Science for Women, University of Baghdad
2023-06-01
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| Series: | Baghdad Science Journal |
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| Online Access: | https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/8111 |
| _version_ | 1827913438394843136 |
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| author | Baydaa Jaber Nabhan Raouf Mahmood Raouf Mais A. Abdulkarem Lubna Ghalib |
| author_facet | Baydaa Jaber Nabhan Raouf Mahmood Raouf Mais A. Abdulkarem Lubna Ghalib |
| author_sort | Baydaa Jaber Nabhan |
| collection | DOAJ |
| description |
The varied applications of polystyrene in various fields of life led to examining the cause of radiation influence on some rheological behavior of commercial Polystyrene (PS) solution in the chloroform (CHCl3) solvent. Polystyrene grains shape samples were irradiated using the radioactive element Cesium- 137 with (9 µci) activity for 10, 20, and 30 minutes. The viscosity of the polymer solution depends on the concentration and size (i.e. molecular weight) of the dissolved polymer. Experimental data showed that the radiation dose affected the value of viscosity (shear, relative, specific, and reduced). The viscosity value significantly reduced at 10 min radiation dose and when increasing the dose, the viscosity value increased up to 30 minutes. Deterioration of the polymer structure was recorded for a 10 minutes radiation dose. With the increase of radiation time, which reached 30 minutes, cross-linking was performed due to the substance gaining additional doses of radiation. The molecular weight of polystyrene increased with the increase of irradiation time, but no value was recorded for a molecular weight higher than 56089, which is for not irradiated polystyrene. The study concluded that the radiation dose is able to control the chemical composition of the polymer, therefore the behavior of the polymer in the solvent is determined by the radiation dose to which it is exposed.
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| first_indexed | 2024-03-13T02:29:58Z |
| format | Article |
| id | doaj.art-3d41e2369ec448599e9f5da341ce2584 |
| institution | Directory Open Access Journal |
| issn | 2078-8665 2411-7986 |
| language | Arabic |
| last_indexed | 2024-03-13T02:29:58Z |
| publishDate | 2023-06-01 |
| publisher | College of Science for Women, University of Baghdad |
| record_format | Article |
| series | Baghdad Science Journal |
| spelling | doaj.art-3d41e2369ec448599e9f5da341ce25842023-06-29T19:47:34ZaraCollege of Science for Women, University of BaghdadBaghdad Science Journal2078-86652411-79862023-06-01203(Suppl.)10.21123/bsj.2023.8111Determination of Molecular Weight and Viscosity of Irradiated Polystyrene Baydaa Jaber Nabhan 0Raouf Mahmood Raouf 1Mais A. Abdulkarem2Lubna Ghalib3Materials Engineering Department, College of Engineering, Mustansiriyah University, Baghdad, Iraq Materials Engineering Department, College of Engineering, Mustansiriyah University, Baghdad, Iraq Materials Engineering Department, College of Engineering, Mustansiriyah University, Baghdad, Iraq Materials Engineering Department, College of Engineering, Mustansiriyah University, Baghdad, Iraq The varied applications of polystyrene in various fields of life led to examining the cause of radiation influence on some rheological behavior of commercial Polystyrene (PS) solution in the chloroform (CHCl3) solvent. Polystyrene grains shape samples were irradiated using the radioactive element Cesium- 137 with (9 µci) activity for 10, 20, and 30 minutes. The viscosity of the polymer solution depends on the concentration and size (i.e. molecular weight) of the dissolved polymer. Experimental data showed that the radiation dose affected the value of viscosity (shear, relative, specific, and reduced). The viscosity value significantly reduced at 10 min radiation dose and when increasing the dose, the viscosity value increased up to 30 minutes. Deterioration of the polymer structure was recorded for a 10 minutes radiation dose. With the increase of radiation time, which reached 30 minutes, cross-linking was performed due to the substance gaining additional doses of radiation. The molecular weight of polystyrene increased with the increase of irradiation time, but no value was recorded for a molecular weight higher than 56089, which is for not irradiated polystyrene. The study concluded that the radiation dose is able to control the chemical composition of the polymer, therefore the behavior of the polymer in the solvent is determined by the radiation dose to which it is exposed. https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/8111Cross-linking, Degradation, Effective molecular radius, Viscosity, Polystyrene. |
| spellingShingle | Baydaa Jaber Nabhan Raouf Mahmood Raouf Mais A. Abdulkarem Lubna Ghalib Determination of Molecular Weight and Viscosity of Irradiated Polystyrene Baghdad Science Journal Cross-linking, Degradation, Effective molecular radius, Viscosity, Polystyrene. |
| title | Determination of Molecular Weight and Viscosity of Irradiated Polystyrene |
| title_full | Determination of Molecular Weight and Viscosity of Irradiated Polystyrene |
| title_fullStr | Determination of Molecular Weight and Viscosity of Irradiated Polystyrene |
| title_full_unstemmed | Determination of Molecular Weight and Viscosity of Irradiated Polystyrene |
| title_short | Determination of Molecular Weight and Viscosity of Irradiated Polystyrene |
| title_sort | determination of molecular weight and viscosity of irradiated polystyrene |
| topic | Cross-linking, Degradation, Effective molecular radius, Viscosity, Polystyrene. |
| url | https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/8111 |
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