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Showing 1 to 20 of 222 for “"Micelle"”.
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Micelle Enhanced Analytical Chemistry
… alone (by a factor of ca. 80 for SDS as the micelle and NMA as fluorescent probe). The SDS micelle system appeared to be best in terms of the enhancement factor observed and the reproducibility of the results relative to NaDS or NaTDS. Temperature was found to have only a moderate effect on …
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Computer simulation of micelle self-assembly.
… amphiphile model to study the self-assembly of micelles. Analysis of the results from these simulations shows that the models exhibit a critical micelle concentration together with cluster size distributions consistent with experiment and theory. Simulations of the single amphiphile model also …
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Functional Triblock Terpolymers for Multicompartment Micelle and Janus Particle Synthesis
… by Janus particle (JP) and multicompartment micelle (MCM) synthesis from the as prepared triblock terpolymers. A synthesis method that can accomplish the tasks of the preparation of spherical as well as non-spherical JPs that are well-defined and in the nanometer size range is based on …
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Effect of Encapsulated Species on Block Copolymer Micelle Self-Assembly
… spontaneously form assemblies known as micelles in selective solvents. Minimization of the solution free energy drives the micellization process, with contributions from the polymer chains, surrounding solvent, and any additive molecules. Through manipulation of the polymer …
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Synthesis of DMAP tethered polymer chains for reversible micelle formation
… chain to create a polymer system capable of micelle formation in solution. These functionalized micelles are designed to be selectively opened and closed by changing the temperature, thus allowing the product to be removed from the micelle and avoiding the diminished catalytic activity that …
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Stable Polymer Micelle Systems as Anti-cancer Drug Delivery Carriers
<p>Several temporarily stable polymer micelle systems that might be used as ultrasonic-activated drug delivery carriers were synthesized and investigated. These polymeric micelle systems were Plurogel®, Tetronic®, poly(ethylene oxide)-b-poly(N-isopropylacrylamide) and poly(ethylene …
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Synthesis, Characterization, Critical Micelle Concentration and Antimicrobial Activity of Two-headed Amphiphiles
… group to give the 2CCbn series. The critical micelle concentrations (CMC) were measured by the pyrene-based fluorescent probe method. The pyrene excited at 345 nm and fluoresces with maxima at 374 nm (I1) and 385 nm (I3). The stock solution and the dilution series for each amphiphiles were …
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Synthesis, Characterization, Critical Micelle Concentration and Biological Activity of two-Headed Amphiphiles
… protecting groups to give 2CAmn. Critical micelle concentration measurements were collected by the pendant drop method for measuring surface tension for a series of triethanolamine/2CAmn solutions to establish the concentration required for detergency. The CMCs for the 2CAmn series were …
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Luminescent Silicon Nanoparticles: An improved inverse micelle synthesis and oxide-dependent photoluminescence studies
… that improves upon the established inversemicelle technique by replacing the methanol or ethanol quenching agent with copper chloride. It is found that this new technique lowers the level of surface oxide present in the form of alcohols on the surface of the nanoparticles, giving blue …
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Elaboration of micelle formation in aqueous and two phase solutions by surface active phosphines
… N+)3,1, aggregates in aqueous solution to form micelles. Light scattering experiments were used to determine the hydrodynamic radius of the aggregates. Fluorescence, conductivity, and surface tension experiments were used to measure the critical micelle concentration of these aggregates. …
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STRUCTURE, DYNAMICS AND RHEOLOGY OF SURFACTANT MICELLES AND MICELLE-NANOPARTICLE SOLUTIONS: A MOLECULAR DYNAMICS STUDY
<p>Surfactant micelles are widely used in a number of industrial, commercial and household products and processes. Understanding flow-microstructure coupling in micellar systems can benefit applications ranging from targeted drug delivery and detergency to enhanced oil recovery and hydrofracking. …
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Synthesis of Nanometer-sized Yttrium Oxide Particles in Diisooctyl Sodium Sulphosuccinate/Isooctane Reverse Micelle Solution
… oxide nanoparticles in an AOT/isooctane reverse micelle solution. Two synthetic methods are compared. First is the precipitation reaction between yttrium nitrate and ammonia, second is the hydrolysis of yttrium isopropoxide. The effects of annealing of the resulting the yttrium oxide …
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One-pot synthesis and characterisation of alkyl functionalised silicon nanoparticles, using an inverse micelle based method.
Silicon nanoparticles (SiNPs) are subject to research in a variety of fields and their synthesis is of increasing importance. A simple, cheap and easily scalable solution based synthesis method of alkyl terminated SiNPs is reported here. The produced SiNPs were imaged with a transmission electron …
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Thermodynamics and dynamics of micellization and micelle-solute interactions in block-copolymer and reverse micellar systems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1994.
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RNA Interference for Improving the Outcome of Islet Transplantation and Polymeric Micelle‑based Nanomedicine for Cancer Therapy
… research was focused on the study of polymeric micelle formulations for treating cancers. Two key elements were integrated in my research projects: development of polymeric micelle delivery systems; discovery of new therapeutics for better treatment of cancers.</p> <p>The project described in …
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Pharmacokinetics of Ultrasonically-Released, Micelle-Encapsulated Doxorubicin in the Rat Model and its Effect on Tumor Growth
… (DOX) in particular, in stabilized Pluronic micelles (Plurogel TM) shows success in limiting these harmful side effects. In previous studies, low-frequency ultrasound (US) has been shown, in vitro, to locally release DOX from these micelles. In this study, a novel drug delivery system …
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An investigation of the synthesis and properties of nano crystalline Y2O3:Eu3+ (prepared using micelle- based precursors)
The work described in this thesis was aimed at understanding the reactions taking place on heating Y2O3:Eu3+ phosphor precursors in the nano particle size regime. Herein combustion syntheses to prepare nanometer sized crystallites of cubic Y2O3:Eu3+ using precursors containing sacrificial long …
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Positronium formation in organic liquids and studies of micelle, liposome and polymer systems by position annihilation technique
… was applied for studying systems such as micelles, liposomes and polymers which have found widespread applications in today's chemical industry. The micelle formation process was investigated in inverted micelles. A distinct cooperative effect of the solution resulting in abrupt changes in …
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K-casein and its Interaction in Human Milk Micelles
… internal standard. Tracer K-casein for human micelle studies was <sup>3</sup>H-labeled in the sialic acid moiety of its carbohydrate. The human micelle system was investigated in its native form at 37°C. Micelle reformation by re-equilibration in skimmed milk at 4°C (overnight) followed by 3 h …
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DESIGN AND SYNTHESIS OF BLOCK COPOLYMERS THAT SELF ASSEMBLE INTO MICELLES WITH CONTROLLED ACID AND LIPASE CATALYZED DEGRADATION
… block copolymer that self assembles into micelles in water where the hydrolytically stable hydrophilic PEG segment forms the exterior corona and the core contains the hydrophobic degradable PCL block. Micelles from PCL-b-PEG block copolymers are among the top candidates for application as …
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