Reaction of zein with methylenediphenyl diisocyanate in the melt state / David J. Sessa in Industrial & engineering chemistry research, Vol. 51 N° 27 (Juillet 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 27 (Juillet 2012) . - pp. 9199-9203 Titre : Reaction of zein with methylenediphenyl diisocyanate in the melt state : Thermal, mechanical, and physical properties Type de document : texte imprimé Auteurs : David J. Sessa, Auteur ; Gordon W. Selling, Auteur ; Atanu Biswas, Auteur Année de publication : 2012 Article en page(s) : pp. 9199-9203 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Physical properties Résumé : Com protein (zein) was melt-processed with methylenediphenyl 4,4'-diisocyanate (MDI) using triethylamine (TEA) as a catalyst to facilitate the reaction of the isocyanate groups with the nucleophilic moieties present on zein. The product of the reaction was examined using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) to monitor changes in molecular weight. Techniques used to evaluate property changes after reaction included FTIR, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and evaluation of mechanical properties. Our findings demonstrated that zein reacts with MDI in the melt state generating higher molecular weight compounds that after compression molding have improved physical properties and solvent resistance. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26132254 [article] Reaction of zein with methylenediphenyl diisocyanate in the melt state : Thermal, mechanical, and physical properties [texte imprimé] / David J. Sessa, Auteur ; Gordon W. Selling, Auteur ; Atanu Biswas, Auteur . - 2012 . - pp. 9199-9203. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 27 (Juillet 2012) . - pp. 9199-9203 Mots-clés : Physical properties Résumé : Com protein (zein) was melt-processed with methylenediphenyl 4,4'-diisocyanate (MDI) using triethylamine (TEA) as a catalyst to facilitate the reaction of the isocyanate groups with the nucleophilic moieties present on zein. The product of the reaction was examined using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) to monitor changes in molecular weight. Techniques used to evaluate property changes after reaction included FTIR, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and evaluation of mechanical properties. Our findings demonstrated that zein reacts with MDI in the melt state generating higher molecular weight compounds that after compression molding have improved physical properties and solvent resistance. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26132254

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