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Document Type |
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Thesis |
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Document Title |
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ULTRASONIC FABRICATED POLYVINYL ALCOHOL AND POLYVINYL CHLORIDE NANOCOMPOSITES AND ITS APPLICATIONS تصنيع توليفات البولي فينيل الكحول والبولي فينيل كلوريد النانونيه بالموجات فوق الصوتيه وتطبيقاتها |
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Subject |
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Faculty of Science |
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Document Language |
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Arabic |
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Abstract |
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Three different series of nanocomposites based on polyvinyl chloride (PVC) and /or polyvinyl alcohol (PVA) and reinforced by mixed graphene/carbon nanotube (MGr/CNTs) as nanofillers have been fabricated throughout simple dissolution casting technique with the help of ultrasonic assistance. The 1st part is aimed to fabricate a series of PVC/MGr-CNTsa-e nanocomposites via simple dissolution and casting method with the help of ultrasonic assistance. Different loading of that mixed Gr/CNTs ratio (2, 5, 10, 20, and 30 wt%) was added to PVC polymer matrix. PVC/MGr-CNTs nanocomposite was tested for potential Ag+ ionic sensor. Results showed the proposed cation sensor was exhibited good sensitivity, practically a broad dynamic range, lower detection limit and shorter response time. The prepared sensor can be used for the application of environmental and healthcare fields. While the 2nd part is aimed to fabricate another class of biologically active polymer nanocomposite in the form of (PVA/MGr-CNTs) using the same fabrication technique. All samples were tested for antibacterial property against Escherichia coli using colony forming units (CFU) method. Results presented the enhancement in antibacterial activity after the addition of nanofillers to PVA matrix. Comparing to pure PVA, PVA/MGr-CNTse showed the highest reduction (100%). Finally, the 3rd part is aimed to fabricate hybrid polymer composite materials with the general formula of (PVA-PVC)/MGr-CNTsa-e using also the same preparation method. Removal of acid red dye from wastewater was explored. It was found that significant enhancement in the %acid red removed by increasing the removal time, composites mass, and by decreasing the temperature of solution, were observed. Moreover, acid red removal was investigated kinetically and thermodynamically, and the results showed that pseudo-second-order kinetic model was the most appropriate model for describing the removal process. The efficiency of prepared nanocomposite for removal of acid red from real samples was tested by extraction of acid red from Red Sea water, wastewaters, and tap water, and the percentage of acid red removed from these samples was in the range of 94.61–99.11% confirming suitability (PVA-PVC)/MGr-CNTs nanocomposite as an adsorbent for extraction of acid red. |
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Supervisor |
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Dr. Mahmoud Ali Hussein |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1440 AH
2018 AD |
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Co-Supervisor |
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Dr. Zahra Mohammed Al-amshany |
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Added Date |
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Monday, November 19, 2018 |
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Researchers
| خديجة شكري اسا | assa, Khdejah Shokri | Researcher | Master | |
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