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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 268 for “"polyelectrolyte"”.
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Polyelectrolyte Coatings with Internal Hierarchy
… are focused on the surface modification by polyelectrolytes and polyelectrolyte copolymers. The internal structural hierarchy originate thereby from the self-assembly processes at different length scales. To generate different levels of hierarchy, the coatings were constructed by using …
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Multifunctional and Responsive Polyelectrolyte Nanostructures
<p>A polyelectrolyte complex is formed by mixing two oppositely charged polyelectrolytes in a solution. The electrostatic interactions between partially charged polymeric chains lead to the formation of a stable complex while avoiding the use of covalent cross linkers. Since complex formation can …
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Simulation of Weak Polyelectrolyte Brushes
… the stimuli-responsive behavior of weak polyelectrolyte brushes (PEBs) and weak polyampholyte brushes (PABs) was examined with respect to pH, salt concentration, monomer sequence and grafting density. While PEBs have only acidic or basic monomers, PABs contain both types of monomers, …
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Ion Association in Polyelectrolyte Systems
Made available in DSpace on 2014-12-05T19:35:54Z (GMT). No. of bitstreams: 1 0009065.pdf: 3836641 bytes, checksum: 7c58969d6d3455dccb41f2e1621cbc2c (MD5) Previous issue date: 1954
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Electromechanics of deformable polyelectrolyte membranes.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1974. Sc.D.
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Rheology of polyelectrolyte multilayer modified suspension
… and cost effective production. Self-assembled polyelectrolyte multilayer modified colloids are a relatively new and promising colloidal system that is expected to overcome the previousmentioned drawbacks of the established systems. For the first time, this thesis explores themicro-macro …
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Polyelectrolyte Complexes and their Therapeutic Potential
This thesis describes the preparation of polyelectrolyte nanostructures, the characterization of interpolyelectrolyte complexes (IPECs) made from these structures and their use in a therapeutic context. The therapeutic use of such IPECs connects the two major topics of this work: First, the …
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Molecular dynamics simulations of polyelectrolyte brushes
This thesis studies strong, completely charged polyelectrolyte brushes. Extensive molecular dynamics simulations are performed on different polyelectrolyte brush systems using local compute servers and massively parallel supercomputers. The full Coulomb interaction of charged monomers, counterions, …
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Polyelectrolyte complexes embedding reduced graphite oxide
L'abstract è presente nell'allegato / the abstract is in the attachment
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Biological applications of weal polyelectrolyte multilayers
… on biological applications of ultra-thin weak polyelectrolyte multilayers with specific emphasis on cell patterning, drug delivery, and antibacterial coatings. All of these very different applications were studied using three different polymers - polyacrylic acid (PAA), poly(allylamine …
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Polyelectrolyte conditioning of ferric sulfate sludge
… to determine if cationic, anionic and nonionic polyelectrolytes could successfully condition the sludge to improve its dewaterability. In addition the parameters which affected the conditioning mechanism. were investigated. Tests that were run during the investigation included specific …
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Novel polyelectrolyte complexes for oral insulin delivery.
… and hydrophilicity. Nano-sized polymer-protein polyelectrolyte complexes (PECS) formed by electrostatic interactions between insulin and Polyallylamine-based polymers at pH 7.4 have been adapted to facilitate oral insulin delivery. Polyallylamine (15kDa) was quaternised by methylation of its …
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Polyelectrolyte multilayers for plasmonics and picosecond ultrasonics
This thesis investigates the application of polyelectrolyte multilayers in plasmonics and picosecond acoustics. The observed samples were fabricated by the spin-assisted layer-by-layer deposition technique that allowed a precise tuning of layer thickness in the range of few nanometers. The first …
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POLYELECTROLYTE NANOPARTICLE MEMBRANES AT WATER-WATER INTERFACES
… oppositely charged nanoparticles (NPs) and polyelectrolytes (PEs) on aqueous two-phase systems (ATPSs) provides a scalable route to assemble functional, stimuli-responsive membranes. The aim of this thesis is to identify the membrane self-assembly mechanism of such systems. We study two …
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Synthesis and Characterization of Cationic Spherical Polyelectrolyte Brushes
… thesis, the preparation of cationic spherical polyelectrolyte brushes by photo-emulsion polymerization has been presented for the first time. The structure and properties of the cationic SPB, have been comprehensively investigated by dynamic light scattering and atomic force microscopy, and …
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Mathematical Modeling of Microscale Biology in Polyelectrolyte Brushes
… In this thesis, we develop such models for polyelectrolyte brushes using both steady state modified Poisson-Boltzmann models and transient modified Poisson-Nernst-Planck models that incorporate important ion-specific (Hofmeister) effects. The transient model enables observation of the …
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Transference Studies on Ion Binding in Polyelectrolyte Solutions
Made available in DSpace on 2014-12-05T19:37:01Z (GMT). No. of bitstreams: 1 5900523.pdf: 2014576 bytes, checksum: 63b0e6c54a92fc1d0dd003ed495ee26c (MD5) Previous issue date: 1958
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Fundamental studies of pH-sensitivity in polyelectrolyte multilayers
… of the pH-sensitive behavior of weak polyelectrolytes, such as poly(acrylic acid)(PAA) and poly(allylamine hydrochloride) (PAH) from two perspectives of the assembled multilayers - functional group composition and layer growth. In the first part of this thesis, with respect to the …
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