Preparation and characterization of pure and copper-doped PVC films
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K. Bhagya Sree
Abstract
Pure and Cu2+-doped polyvinyl chloride (PVC) polymer films were prepared using the solution cast technique. Investigations were conducted using DSC, TGA, XRD, FT-IR, UV–Vis, SEM and EPR. Differential scanning calorimetry studies suggested that the Cu2+ samples have higher values of the glass transition (Tg) temperature, and thermo gravimetric studies show that weight loss of polymer film indicates the improved thermal stability of the polymer film. The features of the complexation of the polymer films were studied by X-ray diffraction. FT-IR spectra exhibits the bands in three regions, which are attributed to C–Cl, C–C and numerous CH groups of stretching and bending vibrations. The absorption spectra have been recorded in the wavelength range 200–900 nm. The absorption edge, direct bandgap, indirect bandgap and urbach energy have been evaluated. Film morphology was examined by scanning electron microscopy. XRD, DSC and SEM reveal the amorphous nature and surface morphology of polymer films, respectively. Electron paramagnetic resonance studies were used to calculate the number of spins and paramagnetic susceptibility as a function of dopant concentration, all the Cu2+-doped PVC samples exhibit signal with g values g⊥=2.176 and g||=2.254. The observed variation in the EPR signal intensity is due to variation in the dopant concentration.
Acknowledgments:
The authors thank Dr. Tushar Jana, Associate Professor, Department of Chemistry, for his constant encouragement and active cooperation to carry out the work. We also thank the Central University of Hyderabad for supporting this research.
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©2017 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
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- Tailoring PES membrane morphology and properties via selected preparation parameters
- Preparation and characterization of pure and copper-doped PVC films
- Study on preparation and properties of carbon nanotubes/hollow glass microspheres/epoxy syntactic foam
- Processing of polycaprolactone and hydroxyapatite to fabricate graded electrospun composites for tendon-bone interface regeneration
Artikel in diesem Heft
- Frontmatter
- Review
- Characterization of polymeric shape memory materials
- Original articles
- Reworkable layered silicate-epoxy nanocomposites: synthesis, thermomechanical properties and combustion behaviour
- Crystalline phase of inorganic montmorillonite/poly(vinylidene fluoride) nanocomposites: influence of dispersion of nanolayers
- Effects of epoxidized natural rubber as a compatibilizer on latex compounded natural rubber-clay nanocomposites
- Preparation and mechanical properties of poly(p-phenylene sulfide) nanofiber sheets obtained by CO2 laser supersonic multi-drawing
- Fabrication of mixed matrix poly(phenylene ether-ether sulfone)-based nanofiltration membrane modified by Fe3O4 nanoparticles for water desalination
- Tailoring PES membrane morphology and properties via selected preparation parameters
- Preparation and characterization of pure and copper-doped PVC films
- Study on preparation and properties of carbon nanotubes/hollow glass microspheres/epoxy syntactic foam
- Processing of polycaprolactone and hydroxyapatite to fabricate graded electrospun composites for tendon-bone interface regeneration
