Record number :
2388250
Title of article :
http://ijsts.shirazu.ac.ir Induction of morphological changes in soy protein concentrate through pressure induced graft copolymerization and evaluation of chemical and thermal properties
Author/Authors :
Bhatia، j k نويسنده Department of Chemistry, National Institute of Technology, Jalandhar, Punjab, 144011 , , Kaith، B s نويسنده Department of Chemistry, National Institute of Technology, Jalandhar, Punjab, 144011 , , Jindal، R نويسنده Department of Chemistry, Department of Chemistry, National Institute of Technology, Jalandhar, Punjab, 144011LLJJ, Jalandhar, Punjab, 144011 ,
Issue Information :
فصلنامه با شماره پیاپی 0 سال 2015
Pages :
11
From page :
503
To page :
513
Abstract :
Modification of natural polymers like protein by graft co-polymerization is an important method to incorporate the desired properties into the backbone. Soy protein concentrate (SPC) was grafted with ethylmethacrylate (EMA) using ascorbic acid /potassium persulphate as redox initiator system under pressure. Different reaction parameters such as reaction time, reaction pressure, solvent amount, initiator ratio, pH and monomer concentration were optimized to get maximum graft yield (59.5%). The optimized reaction conditions were: reaction time; 150 min, reaction pressure; 7.5 psi, solvent; 150ml, AAc: KPS; 1:1.25, pH; 8, [EMA]; 1.99 X 10-3 Mol L-1. The graft copolymer formed was characterized by FTIR, XRD and SEM techniques. The grafted protein was found to undergo physico-chemical changes on incorporation of polymer chains onto backbone through graft copolymerization which resulted in enhanced resistance towards moisture absorbance and acid-base attack. Thermal analysis showed higher final decomposition temperature of grafted protein as compared to that of ungrafted backbone.
Journal title :
Iranian Journal of Science and Technology Transaction A: Science
Serial Year :
2015
Link To Document :
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