title: Electron beam irradiation of maltodextrin and cinnamyl alcohol mixtures: influence of glycerol on cross-linking.
abstract: The influence of glycerol on the electron beam-induced changes in maltodextrins-cinnamyl alcohol (CA) blends is examined with respect to its influence on the degree of chain scission, grafting, and cross-linking. The study is relevant to radiation-induced polysaccharide modification, specifically in the perspective of using blended starch as a thermoplastic material, where glycerol is commonly used as a plasticizer. In the absence of CA, glycerol protects maltodextrin from chromophore formation onto the main chain, but also induces more chain scission. The presence of CA provides efficient radiation-protection against scission. Glycerol is shown to affect the interaction between maltodextrin and CA, most likely in the form of an inclusion complex when glycerol is absent. The global behavior under radiation is therefore governed by the physical interactions between the blend constituents rather than on the role of glycerol role as a plasticizer, or as an OH˙ radical scavenger.
authors.affiliation: Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims Champagne Ardenne, 51687 Reims, France.
authors.forename: Dhriti
authors.initials: D
authors.lastname: Khandal
authors.affiliation: Shri Ram Institute for Industrial Research, 19 University Road, Delhi, India.
authors.forename: Manjeet
authors.initials: M
authors.lastname: Aggarwal
authors.affiliation: Shri Ram Institute for Industrial Research, 19 University Road, Delhi, India.
authors.forename: Gunjan
authors.initials: G
authors.lastname: Suri
authors.affiliation: Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims Champagne Ardenne, 51687 Reims, France. Electronic address: xavier.coqueret@univ-reims.fr.
authors.forename: Xavier
authors.initials: X
authors.lastname: Coqueret
mesh_terms: D004583:Electrons; D005990:Glycerol / Q000737:chemistry*; D011134:Polysaccharides / Q000737:chemistry*; D020005:Propanols / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D011134:Polysaccharides; D020005:Propanols; D014867:Water; C008315:maltodextrin; D005990:Glycerol; C020722:cinnamyl alcohol
keywords: Electron beam irradiation; Gels; Grafting; Inclusion chemistry; Polysaccharides