0000000000560031

AUTHOR

Bo Nyström

showing 2 related works from this author

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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Temperature-responsive inclusion complex of cationic PNIPAAM diblock copolymer and γ-cyclodextrin

2012

Aqueous mixtures of γ-cyclodextrin (γ-CD) and the thermosensitive cationic diblock copolymer poly(N-isopropylacrylamide)-b-poly(3-acrylamidopropyl)trimethylammonium chloride (PNIPAAM24-b-PAMPTAM(+)9) or the PNIPAAM homopolymer PNIPAAM47 have been investigated using various experimental methods. Solid γ-CD–polymer inclusion complexes (pseudopolyrotaxanes) form at ambient temperatures in fairly concentrated CD solutions. The NMR measurements showed that the stoichiometry of the inclusion complexes is close to two NIPAAM units per CD molecule. The cationic block of the copolymer is not incorporated into the CD cavity. Synchrotron radiation X-ray diffraction spectra of the solid inclusion compl…

chemistry.chemical_classificationAqueous solutionCyclodextrinChemistrysupramolecule cyclodextrin PNIPAAM rotaxanesCationic polymerizationGeneral ChemistryCondensed Matter PhysicsLower critical solution temperatureFluorescence spectroscopyDynamic light scatteringPolymer chemistryCopolymerMoleculeSettore CHIM/02 - Chimica FisicaSoft Matter
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