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Showing 1 to 20 of 144 for “"polyelectrolytes"”.
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Star-shaped Polyelectrolytes
Star-shaped polyelectrolytes were prepared by means of atom transfer radical polymerization (ATRP) utilizing the core-first approach. Star-shaped poly(acrylic acid) (PAA) with 5, 8 and 21 arms and different arm lengths was prepared via the corresponding poly(tert-butyl acrylate) (PtBA) precursors …
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Electrolytic Transference Properties of Polyelectrolytes
Made available in DSpace on 2015-05-12T17:02:22Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0005955.PDF: 6175606 bytes, checksum: 869496e5a3172490ba9321925701cc28 (MD5) Previous issue date: 1953
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Nanomechanical coupling of mechanomutable polyelectrolytes
… components - e.g., the complexation of two weak polyelectrolytes - is not yet predictive, and thus cannot be rationally engineered. Predictive and reliable quantification of material properties across scales is necessary to enable the design and development of advanced functional (and complex) …
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Regioselective Synthesis of Polysaccharide-based Polyelectrolytes
Polysaccharides are one of the most abundant and diverse families of natural polymers, and have an incredibly wide range of natural functions including structural reinforcement, energy storage, aqueous rheology modification, and communication and identity. Application of native polysaccharides like …
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Simulation of annealed polyelectrolytes in poor solvents
… mit eingefrorener Ladungsverteilung (quenched polyelectrolytes). Im Falle von schwachen Polyelektrolyten ist die Ladungsdichte auf der Kette nicht konstant, sondern wird durch der pH-Wert der Lösung kontrolliert. Durch Rekombinations- und Dissoziationsprozesse sind die Ladungen auf der Kette …
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Interplay of Polyelectrolytes With Different Adsorbing Surfaces
… of biomembrane surfaces interacting with polyelectrolytes are presented, using fluorescence correlation spectroscopy (FCS). The significance is to characterize domains induced by polyelectrolyte binding.
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Destabilization - Aggregation of Dilute Colloidal Suspensions by Polyelectrolytes
Made available in DSpace on 2014-12-08T23:57:07Z (GMT). No. of bitstreams: 1 6901367.pdf: 4933082 bytes, checksum: 40d7bcab944a80514e5f9d6b2a907b32 (MD5) Previous issue date: 1968
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Nucleic base-directed adsorption of colloids and polyelectrolytes
… a variation of selective adsorption in which polyelectrolytes of known substrate selectivity control the adsorption of the colloids onto which they are layered. The first section of this thesis will describe the evolution of this technique in response to certain limitations inherent to the …
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Electrostatically-driven self-assembly of polyelectrolytes and colloidal tetrapods
… interactions and aggregation of rodlike polyelectrolytes. The second theme is the self-assembly of colloidal tetrapods using Monte Carlo simulation. The third theme is the new techniques that needed to be devised in order to perform this work. Chapter 2 presents an extensive exploration …
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Synthesis and Characterization of Nucleobase-Containing Polyelectrolytes for Gene Delivery
… not widely investigated in current literature. Polyelectrolytes containing hydrogen bonding groups are expected to exhibit properties of both classes of supramolecular interactions. A series of adenine- and thyminecontaining PDMAEMA and tert-butyl acrylate copolymers were synthesized to …
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Synthesis and Solution Properties of Semi-rigid Polyelectrolytes and Polyampholytes
… polymers. Using a deprotection strategy, anionic polyelectrolytes and polyampholytes of stilbene-maleic anhydride copolymers were synthesized and characterized by first synthesizing organic-soluble polymer precursors. Solution shear rheology and statistical segment length measurements reveal that …
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An evaluation of polyelectrolytes in the chemical treatment of textile mill wastes
… to ascertain whether chemical treatment with polyelectrolytes could achieve an economical treatment. The study consisted of the evaluation of flocculation performance (turbidity, chemical oxygen demand, and color reductions) for treatments with alum alone and alum with polyelectrolytes. A …
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Static and ultrafast optical properties of nanolayered composites : gold nanoparticles embedded in polyelectrolytes
In the course of this thesis gold nanoparticle/polyelectrolyte multilayer structures were prepared, characterized, and investigated according to their static and ultrafast optical properties. Using the dip-coating or spin-coating layer-by-layer deposition method, gold-nanoparticle layers were …
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Capacitive deionization performance of bi-tortuous activated carbon electrodes coated with asymmetrically charged polyelectrolytes
… also coated with thin asymmetrically charged polyelectrolytes to improve ion-selectivity while maintaining the bi-tortuous (BT) macroporous channels. Under constant current operation, the equivalent circuit resistance in CDI cells operating with bi-tortuous electrodes was approximately 2.2 …
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Micro- and nano-scale polymer-on-polymer stamping of the polyelectrolytes SPS and PDAC
… of charged surfaces, we decided to study strong polyelectrolytes, and their optimal stamping conditions when printed onto polymer platforms, particularly multilayer surfaces. The size of the features that could be produced was also examined. The success of printing strong polyelectrolytes onto …
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Counterion Distribution around a Macroion in Polyelectrolytes Probed by Anomalous Small-Angle X-ray Scattering
A systematic and comprehensive study of polyelectrolytes in solution has been carried out using Anomalous Small Angle X-ray Scattering (ASAXS) in order to probe the counterion correlation around the macroion. In the course of this study, different polyelectrolyte systems such as, rod-like …
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