Role of Crosslinker on the Biodegradation Behavior of Starch/Polyvinylalcohol Blend Films |
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| Authors: | Sonakshi Maiti Dipa Ray Debarati Mitra |
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| Institution: | 1. Department of Polymer Science and Technology, University College of Science and Technology, University of Calcutta, 92 A.P. C Road, Kolkata, 700009, India
2. Department of Chemical Technology, University College of Science and Technology, University of Calcutta, 92 A.P. C Road, Kolkata, 700009, India
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| 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. |
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