Global ETD Search
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 34 for “"micellization"”.
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Theoretical modeling of micellization and solubilization in ionic surfactant systems
… aqueous bulk solution properties, including its micellization characteristics and its micellar solubilization characteristics (that is, the capacity of the surfactant micelles to encapsulate hydrophobic solutes in their interior, leading to a significant increase in the aqueous solubility of the …
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Modeling the micellization behavior of fluorosurfactants using molecular-thermodynamic theory
… alternative surfactant formulations that possess micellization properties comparable to those of traditional fluorinated surfactants. With this need in mind, this thesis focuses on gaining a molecular-level understanding of the micellization behavior of traditional fluorinated surfactants, and …
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Theoretical and simulations-based modeling of micellization in linear and branched surfactant systems
… concerned with the prediction of cmc's and other micellization properties for a variety of linear and branched surfactant chemical architectures which are commonly encountered in practice. Single-component surfactant solutions are investigated, in order to clarify the specific contributions of the …
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Molecular-thermodynamic theories of micellization of multicomponent surfactant mixtures and of pH-sensitive surfactants
… application of surfactant science: (1) the micellization of multicomponent surfactant mixtures, and (2) the micellization of pH-sensitive (or amphoteric) surfactants. Surfactant formulations of practical utility typically consist of many surfactant components. In many practical applications, …
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Salt effects on micellization, micellar growth, and phase behavior of aqueous solutions of nonionic surfactants
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1993.
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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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Theoretical and experimental studies of micellization and phase behavior of aqueous solutions of single and mixed surfactants
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1992.
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A computer simulation and molecular-thermodynamic framework to model the micellization of ionic branched surfactants in aqueous solution
… motivated by the need to control bulk solution micellization properties, such as the CMC and the micelle shape and size. The ability to make molecular-level predictions of these surfactant properties would allow formulators in industry to speed up the design and optimization of new surfactant …
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Synthesis and study of the micellization behavior of a dual temperature- and pH-responsive PAA-b-PNIPAM block copolymer
… Results clearly showed the occurrence of micellization for all copolymers.</p>
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New Double-Responsive Micelles of Block Copolymers Based on N,N-Diethylacrylamide: Synthesis, Kinetics, Micellization, and Application as Emulsion Stabilizers
… groups exhibits interesting ‘schizophrenic’ micellization behavior in response to temperature, to pH, and to ionic strength of the aqueous media. Due to its asymmetric composition, two opposite micellar structures are expected. Indeed, the existence of different micellar aggregates, i.e., …
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Complementary use of computer simulations and molecular-thermodynamic theory to model surfactant and solubilizate self-assembly
… is driven by the need to control bulk solution micellization and solubilization characteristics. The goal of this thesis has been to develop computer simulations and molecular-thermodynamic modeling approaches to predict these solution characteristics based on knowledge of surfactant and …
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Synthetic strategies for control of structure from individual macromolecules to nanoscale materials to networks
… the highly versatile structure. Chapter 2. Post micellization modification of norbornene-containing prodrug macromonomers. Highly tunable micelles for drug delivery were functionalized after their selfassembly. Post-micellization inverse electron demand Diels-Alder reactions of norbornenes and …
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A computer-simulation-based molecular-thermodynamic model for shape-based screening of peptide amphiphile micelles in vaccines
… from providing an adequate description of micellization and detailed all-atom simulations are necessary to model the aggregation behavior. To accommodate these criteria, computer-simulation-inspired molecular thermodynamic models exploit atomic resolution information derived from molecular …
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Effect of Encapsulated Species on Block Copolymer Micelle Self-Assembly
… 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 characteristics, choice of solvent, and addition of guest molecules, the formation of the …
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Investigating the bioprotective properties of sugars
… (CMC), Gibbs free energy change of micellization ( Gmic), surface pressure, surface excess concentration and area occupied per surfactant molecule. The free energy penalty of hydrocarbon chain exposure was obtained from the Gibbs free energy change of demicellization( Gdemic) which …
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THERMODYNAMIC STUDIES OF BIS(QUATERNARYAMMONIUM) AND (N-ALKYL-) IONIC SURFACTANTS
… These data provided estimates of the volumes of micellization for these salts. The micellization volumes of the c12-s-c12 surfactant series are typically small, indicating no micelles or very small micelles are produced by these surfactants in aqueous medium. Mean aggregation numbers, Ns, …
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The synthesis of amphiphilic diblock copolymers: An investigation into the formation of micelles as a function of hydrophobic block length
… hydrophobic block, which confirmed effects of micellization. As a result, a rigid hydrophobic core may be substituted with a longer flexible acrylate block for biological use. The adoption of longer core chain lengths in a micellar system may be useful in other transport applications when …
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Oligomeric surfactants as novel type of amphiphiles : structure - property relationships and behaviour with additives
… in aqueous solution such as solubility, micellization and surface activity, micellar size and aggregation number were discussed with respect to the two new molecular variables introduced, i.e. degree of oligomerization and spacer group, in order to establish structure – property …
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Studies on the interaction of surfactants and neutral cyclodextrins by capillary electrophoresis. Application to chiral analysis
… (DM-beta-CD), strongly affect the micellization of SDS in comparison to the other studied CDs. This effect also paralleled the chiral CD-MEKC performance, as indicated by the enantioresolution of (+/-)-Catechin, which was firstly selected as a model compound representative of …
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A new class of photoresponsive surfactants
… cause changes in the surface tension, critical micellization concentrations (CMC), and self-assembly behavior. Differences in saturated surface tensions (at concentrations above their CMCs) were as high as 14.4 mN/m under radiation of different wavelengths. This large and reversible change in …
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