Preparation and characterization of Poly(vinylidenefluoride)-CdSiO3 nanocomposite thin films

Shireesha , G and Manjunatha, C and Jain, Anjana and Radhakrishna, MC (2013) Preparation and characterization of Poly(vinylidenefluoride)-CdSiO3 nanocomposite thin films. In: Workshop on Advanced materials manufacturing management and thermal studies, 3 May 2013, Tumkur.

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Abstract

The state of art behavior of PVDF-CdSiO3 nano-composite has been reported in context to their crystal structure, morphology and optical bandgap. Nanocomposites of varying concentration (1, 3 and 5 wt %) were prepared by spin coating method. The thickness of the film was measured by using Elecro Physik instrument and was found to be ~40µm. Peaks in the X-ray diffraction pattern indicate the presence of CdSiO3 nanoparticles in PVDF matrices and absence of any extra peak in the pattern shows that there is no new phase formation. The scanning electron microscope (SEM) images showed that nano inclusions are uniformly distributed in PVDF matrix. It is also observed that the granular structure PVDF disappears with the increase in the concentration of CdSiO3. The shift in the optical edges as observed by UV-Vis spectra of the developed composites has been correlated to optical band gap using Tauc’s expression. The composite showed an increasing trend in the optical band gap from 3.6eV to 5.2eV with the increase in the concentration of the nanofillers. The present study finds potential applications in the design of microsensors and actuators

Item Type: Conference or Workshop Item (Paper)
Subjects: CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Mr. BS Shivaram
Date Deposited: 24 Sep 2013 05:33
Last Modified: 24 Sep 2013 05:33
URI: http://nal-ir.nal.res.in/id/eprint/11793

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