Journal of Thermal Analysis and Calorimetry

, Volume 126, Issue 2, pp 511–519 | Cite as

Role of pumice particles in the thermal, electrical and mechanical properties of poly(vinyl alcohol)/poly(vinyl pyrrolidone) composites

  • Manammel Thankappan Ramesan
  • Ankita George
  • Panniyamvelli Jayakrishnan
  • Gopalannair Kalaprasad


Poly(vinyl alcohol)/poly(vinyl pyrrolidone)/pumice composites were prepared with various loadings of pumice particles by a simple and environmental friendly solution blending. The influence of pumice particles in the blend was examined by different characterization techniques like FTIR, UV, XRD, SEM, DSC, TG and conductivity measurements. FTIR and UV spectra indicated the nature of pumice particle interaction with the blend matrix. XRD patterns revealed that amorphous nature of the blend decreases due to the interaction of pumice particles with the blend segments. SEM images showed the uniform dispersion of filler in the polymer matrix, and the dispersion of pumice decreased with increase in pumice content. Analysis of the DSC studies showed a significant decrease in glass transition temperature with an increase in mass percentage of pumice. Thermal decomposition temperature of the composite was gradually increased with the increase in concentration of pumice particles. The mechanical and electrical properties such as tensile strength, AC electrical conductivity, dielectric constant and dielectric loss of the composite were higher than pure blend, and these properties increased with the increase in dosage of pumice particles, whereas the elongation at break of the composite decreases with the addition of pumice particles.


Poly(vinyl alcohol) Poly(vinyl pyrrolidone) Blends Pumice X-ray diffraction Glass transition temperature Thermal stability Electrical conductivity 



The authors wish to thank Prof. P. P. Pradyumnan, Department of Physics, University of Calicut, and Prof. P. Pradeep, Department of Physics, NIT Calicut, for providing necessary facilities in the department.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2016

Authors and Affiliations

  • Manammel Thankappan Ramesan
    • 1
  • Ankita George
    • 1
  • Panniyamvelli Jayakrishnan
    • 1
  • Gopalannair Kalaprasad
    • 2
  1. 1.Department of ChemistryUniversity of CalicutMalappuramIndia
  2. 2.Department of ChemistryS.N. College NattikaThrissurIndia

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