Thermomechanical properties of poly(vinyl alcohol) plasticized with varying ratios of sorbitol

Mahmood Mohsin, Asiful Hossin, Yousef Haik

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

The objective of this work is to study the thermal and mechanical properties of films based on blends of poly(vinyl alcohol) (PVA) with different weight percent of sorbitol. Solid-state PVA/sorbitol polymer membranes were prepared by a solution casting method. The characteristic properties of these polymer membranes were examined by thermo-gravimetric analysis (TGA), differential scanning calorimetry (DSC), nanoindentation methods and by Fourier Transform Infrared (FTIR) spectroscopy. It was found that the thermal properties (glass transition, Tg, melting point, Tm and decomposition temperature, Td) for PVA blends showed a decrease proportional to the sorbitol concentrations. The hardness and elastic modulus obtained from nanoindentation test were also found to decrease with increase in plasticizer concentration. FTIR confirmed the reduction in hydrogen bonding between PVA chains in favour of formation new bonding between the plasticizer and the PVA chains.

Original languageEnglish
Pages (from-to)925-930
Number of pages6
JournalMaterials Science and Engineering A
Volume528
Issue number3
DOIs
Publication statusPublished - 25 Jan 2011
Externally publishedYes

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Keywords

  • FTIR
  • Nanoindentation
  • Poly(vinyl alcohol)
  • Sorbitol
  • Thermal analysis

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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