Search results for "polyrotaxane"

showing 2 items of 2 documents

On the formation of inclusion complexes at the solid/liquid interface of anchored temperature-responsive PNIPAAM diblock copolymers with γ-cyclodextr…

2017

The thermal responsive behavior of adsorbed layers of diblock copolymers of poly(N-isopropylacrylamide) (PNIPAAM) and poly((3-acrylamidopropyl)trimethylammonium chloride) (PAMPTMA(+)) with γ-cyclodextrin (γ-CD) at the solid/liquid interface has been investigated using three in situ techniques: null ellipsometry, quartz–crystal microbalance with dissipation monitoring, and neutron reflectometry. The measurements provided information about the adsorbed amounts, the layer thickness, hydration and viscoelastic properties, and the interfacial structure and composition. The copolymers adsorb to silica with the cationic PAMPTMA(+) blocks sitting as anchors in a flat conformation and the PNIPAAM ch…

AmidePolymers and PlasticsBlock copolymerReflectometerReflection02 engineering and technology01 natural sciencessupramolecular chemistryquartz crystal microbalancechemistry.chemical_compoundColloid and Surface ChemistryEllipsometryViscoelasticity Inclusion complexCopolymerMaterials ChemistryPoly (n isopropylacrylamide)Poly(N-isopropylacrylamide)Settore CHIM/02 - Chimica Fisicachemistry.chemical_classification/dk/atira/pure/subjectarea/asjc/1600/1606Reflectometry/dk/atira/pure/subjectarea/asjc/1500/1505Cyclodextrinunclassified drug Article021001 nanoscience & nanotechnologyThermoresponsive block copolymerpriority journalsolidpolymerizationPoly(N-isopropylacrylamide)synthesiNeutron reflectometrypolyrotaxane0210 nano-technologyellipsometryMaterials science/dk/atira/pure/subjectarea/asjc/2500/2505/dk/atira/pure/subjectarea/asjc/2500/2507poly(n isopropylacrylamide)010402 general chemistryLower critical solution temperatureAcrylic monomeratom transfer radical polymerizationAdsorptioncomplex formationPolymer chemistryCyclodextrinliquidPhysical and Theoretical ChemistrySolid/liquid interfaceThermo-responsive Hydrogels copolymerneutron reflectometryInclusion complexgamma cyclodextrinCationic polymerization0104 chemical sciencessolid liquid interfacechemistryChemical engineeringInvited ArticleColloid and Polymer Science
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Thermodynamics of cyclodextrin-star copolymer threading-dethreading process

2015

We investigated the interactions of a star-like copolymer with cyclodextrins (CD) with different cavity size. Direct measurements of thermodynamic properties were done, and the application of proper molecular models was useful for the interpretation of the involved phenomena. The CD–copolymer inclusion complexes were characterized by isothermal titration calorimetry. The copolymer aggregation induced by temperature was investigated by differential scanning calorimetry, volume and compressibility measurements. The behavior of the ternary T1107/CD/water mixture was interpreted considering competing equilibria. The investigated systems showed an interesting temperature responsive behavior so t…

chemistry.chemical_classificationCyclodextrinMolecular modelTetronicSupramolecular chemistryThermodynamicsIsothermal titration calorimetryPseudopolyrotaxaneCondensed Matter PhysicsDifferential scanning calorimetrychemistryCompressibilityCopolymerCyclodextrinSupramolecular structurePhysical and Theoretical ChemistryTernary operation
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