SYNTHESIS AND CHARACTERIZATION OF POLYMER-BLEND/TiO2 NANOCOMPOSITES

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dc.contributor.authorISMA’ILA, ABDULSALAM
dc.date.accessioned2014-02-11T09:03:55Z
dc.date.available2014-02-11T09:03:55Z
dc.date.issued2012-11
dc.descriptionSUBMITTED TO DEPARTMENT OF PHYSICS AHMADU BELLO UNIVERSITY, ZARIA, NIGERIA IN PARTIAL FULFILLMENT OF THE AWARD OF MASTERS OF SCIENCE DEGREE IN SOLID-STATE PHYSICS/MATERIALS SCIENCE SUPERVISORS: 1. DR. P. O. AKUSU 2. DR. T. O. AHMED NOVEMBER, 2012.en_US
dc.description.abstractThe polymer-blend/ TiO2 nanocomposites are achieved via a two-stage reaction involving synthesis of TiO2 nanoparticles and their subsequent mixing with the host polymer- blend matrix employing solution-mixing technique commonly referred to as one-pot reaction. The nanoparticles are characterized by a combination of Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS). The SEM-EDS analysis reveals TiO2 to be almost isomorphic (≥ 99% phase purity) spherical in shape and particles’ diameters in the range 25-40 nm. Structural modifications are studied via Fourier Transform Infra-Red (FTIR) Spectroscopy, Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD) analysis. The FTIR reveals that significant absorptions below 900 cm-1 represent Titanium bond organic groups and Oxygen. Other prominent functional groups occurring in the range 1076.30 cm-1 - 3483.56 cm-1 reflect the additivity of polyvinyl alcohol and polyvinyl acetate. XRD analysis shows that the materials are semi-crystalline in nature with percentage crystallinity as high as 67.6 ± 0.7%. The sizes of the crystallites are large with values in the range 1688 nm - 4589 nm. The SEM reveals that the crystallites have wider diameters with values ranging from 119 ± 5 μm to 179 ± 4 μm which is in good agreement with the sizes obtained from XRD analysis. UV-Vis Spectrophotometry shows that only sample with 1% TiO2 absorb in the UV and Visible ranges. The samples containing 2%, 3% and 4% TiO2 nanoparticles are transparent to UV light and show strong absorption of the visible light in the wavelength ranges of 520 nm, 590 nm and 550 nm respectivelyen_US
dc.identifier.urihttp://hdl.handle.net/123456789/1019
dc.language.isoenen_US
dc.subjectSYNTHESIS,en_US
dc.subjectCHARACTERIZATION,en_US
dc.subjectPOLYMER-BLEND/TiO2,en_US
dc.subjectNANOCOMPOSITESen_US
dc.titleSYNTHESIS AND CHARACTERIZATION OF POLYMER-BLEND/TiO2 NANOCOMPOSITESen_US
dc.typeThesisen_US
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