6533b85cfe1ef96bd12bd1f5

RESEARCH PRODUCT

Modification of Polymers in Supercritical Carbon Dioxide

Alessandro GaliaGiuseppe FilardoAlberto Giaconia

subject

chemistry.chemical_classificationPhysics::Biological PhysicsQuantitative Biology::BiomoleculesSupercritical water oxidationSupercritical carbon dioxideMaterials scienceIntermolecular forcePolymerCondensed Matter::Soft Condensed MatterSolventDipolechemistryChemical physicsMoment (physics)QuadrupolePhysics::Chemical Physics

description

The interaction of scFluids and polymers are governed by the intermolecular forces between solvent-solvent, solvent-polymer segment, and polymer segment-segment pairs. Because of its symmetry, within reasonable pressure values, CO2 does not have a dipole moment, but it does have a quadrupole moment significant over a much shorter distance than dipolar interactions. The quadrupole moment and the Lewis acidity of CO2 imparts to the carbon dioxide the peculiarity to be a solvent for selected classes of polymers like perfluorinated polyacrylates, polysiloxanes and polyether-polycarbonate diblock copolymers [1–3].

yearjournalcountryeditionlanguage
2003-01-01
https://doi.org/10.1007/978-94-017-0245-4_8