Hysteretic Swelling/Deswelling of Polyelectrolyte Brushes and Bilayer Films in Response to Changes in pH and Salt Concentration
Nisha Hollingsworth, Ronald G. Larson
Abstract
We use a quartz crystal microbalance with dissipation (QCM-D) to investigate the swelling/de-swelling and hysteresis in brushes of weakly ionizable polyanion poly(acrylic acid) (PAA) brushes and bilayers containing a PAA brush and a poly(ethylene imine) (PEI) overlayer [...].
Topics & Concepts
Quartz crystal microbalanceSwellingPolyelectrolyteAcrylic acidMaterials scienceBilayerChemical engineeringPolymer chemistrySwelling capacityHysteresisPolymerMembraneChemistryComposite materialCopolymerOrganic chemistryAdsorptionQuantum mechanicsPhysicsBiochemistryEngineeringPolymer Surface Interaction StudiesHydrogels: synthesis, properties, applicationsAdhesion, Friction, and Surface Interactions