Effect of post cross linking by sodium hexameta phosphate on the performance of starch/polyvinyl alcohol blend films
1Department of Chemical Engineering NIT Jaladhar Punjab India
2Department of Biotechnology, NIT Jalandhar Punjab India
Email:-gargs@nitj.ac.in
In this paper, the starch/PVA blend films were prepared by solution casting method. The blend is further post cross-linked by using sodium hexametaphospahte (SHMP). The extent of crosslinking is measured by swelling degree (SD) and gel mass (GM) analysis. It was seen that concentration of SHMP and sodium carbonate had considerable effect on the crosslinking reaction. With the increase in concentration of SHMP from 2 % to 12 %, GM was increased to 32.8 %. Whereas, with the increase in concentration of sodium carbonate from 0.5 % to 12 %, SD was decreased to 88.4 %. Decrease in swelling degree is favorable for cross-linking reaction.Starch/PVA blend films showed 30% increase in tensile strength after crosslinking with SHMP. Crosslinking with SHMP also improved the moisture resistance of starch/PVAblend films. The cross-linked starch/PVA blend films showed 27 % less water absorption than the non cross-linked starch/PVA blend films.
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PUNYA CHOPRA1, SANGEETA GARG*1, A.K. JANA2 and DEEPAK KOHLI1, "Effect of post cross linking by sodium hexameta phosphate on the performance of starch/polyvinyl alcohol blend films", Journal of Ultra Chemistry, Volume 9, Issue 1, Page Number 129-138, 2016Copy the following to cite this URL:
PUNYA CHOPRA1, SANGEETA GARG*1, A.K. JANA2 and DEEPAK KOHLI1, "Effect of post cross linking by sodium hexameta phosphate on the performance of starch/polyvinyl alcohol blend films", Journal of Ultra Chemistry, Volume 9, Issue 1, Page Number 129-138, 2016Available from: http://journalofchemistry.org/paper/337/
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