%0 Journal Article
%T Study on Various Compositions of Polyvinyl Alcohol and Starch Blends by Cross-Linking with Glyoxal
%A Ravindra V. Gadhave
%A Prakash A. Mahanwar
%A Pradeep T. Gadekar
%J Open Journal of Polymer Chemistry
%P 76-85
%@ 2165-6711
%D 2019
%I Scientific Research Publishing
%R 10.4236/ojpchem.2019.94007
%X The aim of this study is to analyze the various compositions of polyvinyl
alcohol (PVA) and starch blends. The blends have been cross-linked with glyoxal
to enhance its properties. The hydroxyl groups of PVA and starch react with
glyoxal via formation of acetal bonds</span></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\">;</span></span></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"> hence crosslinking could take place. The cross-linking of glyoxal is
observed in various analytical methods such as DSC and FTIR. The cross-linked
blends showed better thermal and mechanical properties. Viscosity, tensile
shear strength, pencil hardness and ultimate stress were evaluated to estimate
the changes due to cross-linking. It was observed that the cross-linking is
directly proportional to starch, since the starch hydroxyl groups are easily
accessible for reacting. The cross-linked blend showed better cohesion between
its chains, thereby increasing glass transition temperature. It was reflected
in the subsequent increase in tensile strength properties.
%K Starch
%K Polyvinyl Alcohol
%K Cross-Linking
%K Glyoxal
%K Mechanical Testing
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=95778