A Study of Dynamic Mechanical and Thermal Behavior of Starch/Poly(vinylalcohol) Based Films

Dipa Ray*, Papri Roy, Suparna Sengupta, Siba Prasad Sengupta, Amar K. Mohanty, Manjusri Misra

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Starch/Poly(vinylalcohol) blends in two different ratios (60:40 and 50:50) were prepared with glycerol as a plasticizer. Films were cast by a solution casting method. One set of films were filled with 10 wt% of bentonite clay and another set of films were crosslinked with epichlorohydrin in an alkaline medium. The prepared film samples were characterized with dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA). The presence of clay and crosslinking with epichlorohydrin was found to have considerable effect on the dynamic mechanical properties and thermal stability of the films. Intercomponent H-bonding between starch, Poly(vinylalcohol) and glycerol enhanced the thermal stability of the films. But incorporation of clay and crosslinking with epichlorohydrin enhanced the steric crowding and lowered the thermal stability of the films.

Original languageEnglish
Pages (from-to)49-55
Number of pages7
JournalJournal of polymers and the environment
Volume17
Issue number1
DOIs
Publication statusPublished - Mar 2009

Keywords

  • Starch/Poly(vinylalcohol) Blend films
  • Dynamic mechanical analysis
  • Damping parameter
  • Thermogravimetric analysis
  • STARCH
  • CLAY

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