Solution properties of dextran–polyacrylamide graft copolymers

Autor:	Nataliya Melnik, Nataliya Kutsevol, Dominique Sarazin, Jean-Michel Guenet, Cyrille Rochas
Rok vydání:	2006
Předmět:	Aqueous solution Polymers and Plastics Chemistry Organic Chemistry Polyacrylamide Concentration effect Grafting chemistry.chemical_compound Polymer chemistry Materials Chemistry Radius of gyration Copolymer Molecule Solvent effects
Zdroj:	Polymer. 47:2061-2068
ISSN:	0032-3861
DOI:	10.1016/j.polymer.2006.01.024
Popis:	Copolymers obtained by grafting polyacrylamide (PAA) onto polydextran (DEX) have been synthesised by ceric-ion-reduced redox initiation method. These copolymers have been characterized by light scattering, self-exclusion chromatography and viscometry in aqueous solutions. The short range molecular structure has been studied by small-angle X-ray scattering. From these results it is suggested that close to the anchoring point the grafted chains are extended while they take on a random conformation far from this point. A few investigations have been carried out in water/DMF (dimethyl formamide) mixtures. It is observed that the molecular weight depends strongly on the dimethyl formamide fraction. These results are discussed by contemplating the existence of PAA/DMF complexes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::526b0df87b5c425963a47d2ef2ef7d09 https://doi.org/10.1016/j.polymer.2006.01.024 Zobrazit plný text záznamu Full Text from ScienceDirect