Role of Crosslinker on the Biodegradation Behavior of Starch/Polyvinylalcohol Blend Films

Sonakshi Maiti, Dipa Ray, Debarati Mitra

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of crosslinkers on the biodegradation behavior of starch/polyvinyl alcohol (PVA) blend films was investigated by weight loss study, Scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). Starch/PVA films were prepared by solution casting method and 5 weight% of four different crosslinking agents like epichlorohydrin, formaldehyde, zinc oxide and borax were used in four different sets to crosslink the films. These crosslinked starch/PVA films were biodegraded in compost. Weight loss study showed that crosslinking retarded the biodegradation of the films in the first 15 days, but after that, there was a significant increase in weight loss. The DSC analysis revealed that the consumption of starch and consequent rearrangement of the PVA molecules were distinctly different in the crosslinked films due to the effect of different crosslinking agents.

Original languageEnglish
Pages (from-to)749-759
Number of pages11
JournalJournal of polymers and the environment
Volume20
Issue number3
DOIs
Publication statusPublished - Sep 2012

Keywords

  • Crosslinker
  • Compost
  • Biodegradation
  • Scanning electron microscopy
  • Differential scanning calorimetry
  • RENEWABLE RESOURCES
  • CITRIC-ACID
  • STARCH
  • COMPOSITES
  • ALCOHOL)
  • POLYMER

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