title: Organization of "Pullulan"-block-polyether copolymers at the aqueous solution/air interface.
abstract: Interfacial behavior of a thermosensitive homologous series of linear copolymers based on polyetheramine (commercially named Jeffamine® M2005) and on pullulan is investigated. The influence of the polysaccharide block length has been significantly highlighted on the copolymer structuring at the aqueous solution/air interface. Indeed, these systems induce a decrease in the surface tension depending on the pullulan length. To highlight the impact of the pullulan length in such a series at the aqueous solution/air interface, the interfacial rheological measurement and the transferred Gibbs films of these systems have been studied. The storage modulus of the adsorption layers and the Gibbs film thickness increase along with the length of pullulan in the block, probably because of a structuring effect in the subphase and to an entanglement effect of the pullulan chains under the interface. Moreover, the results obtained through the transferred Gibbs films backup those obtained by the surface tension and the interfacial rheological measurements.
authors.affiliation: Université de Rouen, Normandie Université, PBS, UMR CNRS 6270, Mont Saint Aignan, France.
authors.forename: Sabrina
authors.initials: S
authors.lastname: Belbekhouche
authors.forename: Jacques
authors.initials: J
authors.lastname: Desbrières
authors.forename: Virginie
authors.initials: V
authors.lastname: Dulong
authors.forename: Luc
authors.initials: L
authors.lastname: Picton
authors.forename: Didier
authors.initials: D
authors.lastname: Le Cerf
authors.forename: Stéphane
authors.initials: S
authors.lastname: Alexandre
mesh_terms: D004987:Ethers / Q000737:chemistry*; D005936:Glucans / Q000737:chemistry*; D008567:Membranes, Artificial; D012212:Rheology; D013500:Surface Tension; D014867:Water / Q000737:chemistry*
chemical_list: D004987:Ethers; D005936:Glucans; D008567:Membranes, Artificial; D014867:Water; C009109:pullulan