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QbD based synthesis and characterization of polyacrylamide grafted corn fibre gum.
Carbohydrate Polymers 2017 January 21
The aim of present investigation was to utilize quality by design approach for the synthesis of polyacrylamide corn fibre gum (PAAm-g-CFG) from corn fibre gum (CFG) by varying concentration of acrylamide and initiator. The spectral analysis (ATR-FTIR, 1 H NMR, DSC, X-ray and Mass spectroscopy) was conducted to assure grafting copolymerization of CFG with acrylamide. The powder flow properties confirm the porous nature of PAAm-g-CFG. The grafted copolymer dispersion showed shear thinning behaviour that follows Herschel Bulkley model. The viscoelastic analysis suggested viscous liquid like nature of PAAm-g-CFG and its viscosity increases with increase in concentration of PAAm-g-CFG. The mucoadhesive strength of synthesized PAAm-g-CFG was found to be higher than moringa oleifera gum, karaya gum, guar gum, xanthan gum, chitosan and gelatin. Further, the results pointed toward enhanced thermal stability of PAAm-g-CFG. Thus, PAAm-g-CFG has a great potential to be used in food and pharmaceutical industry.
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