Poly (chlorotrifluoroethylene): Normal Modes, Phonon Dispersion and Heat Capacity
- Department of Chemistry, Integral University Campus, Shahjahanpur-242306, India.
- Department of Physics, Integral University, Lucknow-226026, U.P., India.
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Abstract
Normal modes of vibration and their dispersions in poly(chlorotrifluoroethylene) (PCTFE) have been obtained by using Urey-Bradley force field and Wilson’s GF matrix method as modified by Higgs. It provides a detailed interpretation of IR and Raman spectra. Characteristic feature of dispersion curves such as regions of high density–of–states, repulsion and character mixing of dispersion modes are discussed. Predictive values of heat capacity as a function of temperature between 50-400 K have been evaluated.
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Sumbul Firdaus, Seema Srivastava, Moiz Ahmad, Saif-ul-Islam Ansari, Parvej Ali (2015); Poly (chlorotrifluoroethylene): Normal Modes, Phonon Dispersion and Heat Capacity, International Journal of Advanced Research (IJAR), 3 (05), 1071-1077, ISSN 2320-5407.
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