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العنوان
Computational techniques for studying structural and physical properties of solid polymer electrolyte /
المؤلف
Ibrahim, Renad Hamdy Ibrahim.
هيئة الاعداد
باحث / رناد حمدي ابراهيم ابراهيم عبدربه
مشرف / محروص شاكر ميخائيل
مشرف / عمرو محمد عبد الغني متولي
مناقش / كمال نصر عبدالنور
مناقش / جهاد محمد صالح نصر
الموضوع
Polyelectrolytes.
تاريخ النشر
2018.
عدد الصفحات
144 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
فيزياء المادة المكثفة
تاريخ الإجازة
1/12/2018
مكان الإجازة
جامعة المنصورة - كلية العلوم - الفيزياء
الفهرس
Only 14 pages are availabe for public view

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Abstract

The present study includes preparation and characterization of some inorganic materials filled Polyvinyl chloride (PVC). Polyvinyl chloride (PVC) polymeric matrix doped with sodium chloride (NaCl) and lithium chloride (LiCl) were prepared via simple casting technique. Different techniques have been employed to study the physical properties of prepared samples.
X-ray diffraction (XRD) for structural properties, Combined DFT–FTIR data were used for investigation of the type of interaction and calculate the possibility of connection of the Filler to the polymeric the matrix, while ultraviolet-visible (UV/Vis.) used to study optical properties, scanning electron microscopy (SEM) for surface nature and AC for electrical properties. XRD of NaCl showed two halos at 2θ =18°and 24° indicate the amorphous nature of PVC. Sample containing more than 1%wt. NaCl show appearance of sharp band located at about 32 and 57 characterize cubic structure of sodium chloride salt. Further increase in salt concentration leeds to an increase in crystallinity result from presence phase separated sodium salt polymeric matrix and forms lamellar composite structure, X-ray of (LiCl) reveal the maintenance of the amorphous behavior of the polymeric matrix (PVC) . Both DFT calculations and FTIR experimental results show the persistence of the characteristic bands of polymeric network in their positions. The spectra characterized by a broad hump originally located at about 3500 cm-1, their area and intensity increases with increasing NaCl and LiCl content. UV/Vis absorbance spectra were employed to calculate the optical energy gap of pristine and doped samples. SEM micrographs showed increasing in crystallinity by increasing concentration of NaCl and LiCl, AC conductivity measurement shows an increase in samples conductivity with further increase of the dopant level till filler concentration (2% NaCl) in NaCl and till (15%LiCl) in LiCl