Thermal and mechanical properties of poly(vinyl alcohol) plasticized with glycerol

Mahmood Mohsin, Asiful Hossin, Yousef Haik

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Thermomechanical behavior of membranes based on blends of poly(vinyl alcohol) (PVA) with different weight percentage (wt %) of glycerol has been studied. Solid-state PVA/Glycerol polymer membranes were prepared by a solution casting method. The films were studied for thermal characteristics by differential scanning calorimetry (DSC) and thermogravimetric analysis and for the mechanical properties including hardness and modulus by nanoindentation method. The dispersion of glycerol within the polymer matrix was examined using scanning electron microscopy. Fourier transform infrared spectroscopy was used to confirm the formation of hydrogen bonding between the plasticizer and PVA in their blends and also to provide information on compatibility and physical interactions between the glycerol and PVA. It was found that the thermal properties particularly the melting point (Tm) for PVA blends exhibit a reduced value proportional to the glycerol content. The hardness and elastic modulus were also found to decrease with an increase in plasticizer content.

Original languageEnglish
Pages (from-to)3102-3109
Number of pages8
JournalJournal of Applied Polymer Science
Volume122
Issue number5
DOIs
Publication statusPublished - 5 Dec 2011
Externally publishedYes

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Keywords

  • differential scanning calorimetry
  • mechanical properties
  • nanoindentation
  • poly(vinyl alcohol)
  • thermogravimetric analysis

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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