Authors : K. Y. Rokde, P. B. Dahikar, M. J. Hedau, S. M. Ghatode, and S. S. Shende
Page Nos : 162-168
Description :
Abstract:
This paper describes the how the spectroscopic technique is useful for nano composite polymer material. Spectroscopic techniques are widely used in the study of optical properties of different materials including nonmaterial, nano composite material and polymer material. The different techniques are usually based on measuring absorption, scattering or emission of light that contains information about properties of the materials. Commonly used techniques include electronic absorption (UV-vis), photoluminescence (PL), infrared red (IR) absorption, Raman scattering, dynamic light scattering, as well as time-resolved techniques, such as transient absorption and time-resolved luminescence. Other more specialized techniques include single molecular spectroscopy and nonlinear optical techniques such as second harmonic or sum frequency generation and luminescence up-conversion. These different techniques can provide different information about the molecular properties of interest. Impedance spectroscopy technique at a constant frequency is used to determine the dielectric properties of the composites at low temperatures. The materials of polymer were analyzed by X-ray diffraction (XRD). In this paper several common spectroscopic techniques are reviewed with emphasis on their principle of operation as well as spectral interpretation. The main objective is to explain how one can get useful physical information about the nanomaterials under study from the optical spectrum measured experimentally. Many times in composite materials, a polymer material is used because polymers are flexible, easy to fabricate and superior in dielectric break down strength. This type of composites has high capability of energy storage and can be used in capacitors and energy storage device. Dielectric materials have very low electrical conductivity but can support large electrostatic fields. Dielectric ceramics are used to make capacitors, resistors, and insulators.
KEYWORDS: Optical spectroscopic; nonmaterial; impedance spectroscopy, polymer material.
