Results 131 to 140 of about 22,477 (312)

Theory of copolymer micellization [PDF]

open access: yesThe Journal of Chemical Physics, 2003
We consider the micellization of block copolymers in solution, employing self-consistent field theory with an additional constraint that permits the examination of intermediate structures. From the information for an isolated micelle (structure, binding energy, free energy) we describe how the global thermodynamics of these systems can be obtained ...
openaire   +4 more sources

Induced Crystallization of Polyelectrolyte-Surfactant Complexes at the Gas-Water Interface

open access: yes, 2004
Synchrotron-X-ray and surface tension studies of a strong polyelectrolyte (PE) in the semi-dilute regime (~ 0.1M monomer-charges) with varying surfactant concentrations show that minute surfactant concentrations induce the formation of a PE-surfactant ...
A. Travesset   +12 more
core   +1 more source

Ordered Phases of Diblock Copolymer Micelles in Selective Solvent [PDF]

open access: yesarXiv, 2005
We propose a mean-field model to explore the equilibrium coupling between micelle aggregation and lattice choice in neutral copolymer and selective solvent mixtures. We find both thermotropic and lyotropic transitions from face-centered cubic to body-centered cubic ordered phases of spherical micelles, in agreement with experimental observations of ...
arxiv  

Effect of percentage of methanol on micellization position of mixed surfactant interaction in the absence and presence of dye

open access: yesResults in Chemistry
The interaction behavior of mixed surfactant-dye systems, i.e., anionic surfactant sodium dodecyl sulfate (SDS), cationic surfactant cetyl pyridinium chloride (CPC), and dye methyl orange (MO) was investigated through the allocation of micelles using ...
Chandradip Kumar Yadav   +5 more
doaj  

Micellization of Diblock Copolymer Modified by Cononsolvency Effect [PDF]

open access: yesarXiv
Spherical micelle modified by cononsolvency effect is investigated by using self-consistent field theory (SCFT) and random phase approximation, which is formed by diblock copolymers consisted of one permanent hydrophobic block and one hydrophilic block.
arxiv  

Premicellar aggregation of amphiphilic molecules: Aggregate lifetime and polydispersity

open access: yes, 2009
A recently introduced thermodynamic model of amphiphilic molecules in solution has yielded, under certain realistic conditions, a significant presence of metastable aggregates well below the critical micelle concentration -- a phenomenon that has been ...
Evans F.   +3 more
core   +1 more source

Anti-HIV drugs (emtricitabine and lamivudine) mediated micellization behavior of anionic and cationic surfactants: A thermodynamic investigation

open access: yesChemical Physics Impact
Aggregation behavior of conventional surfactants; SDS (anionic) and CTAB (cationic) in aqueous medium has been investigated in the presence of anti-HIV drugs; Emtricitabine (ECT) and Lamivudine (LMV) using conductometry, UV–Visible spectroscopy, and ...
Richa Sharma   +3 more
doaj  

Extraction of eco-friendly and biodegradable surfactant for inhibition of copper corrosion during acid pickling

open access: yesAdsorption Science & Technology, 2019
A novel, cheap, less toxic, and easier-prepared gelatin surfactant is successfully used as corrosion inhibitor for the corrosion of copper in 0.1 M H 2 SO 4 at the temperature range: 25–55°C.
Mervette Elbatouti, Howida A Fetouh
doaj   +1 more source

Micelle Formation of Diblock Copolymers Driven by Cononsolvency Effect [PDF]

open access: yesarXiv
This study utilizes self-consistent field theory to characterize various features of cononsolvency-driven spherical micelles formed by double hydrophilic block copolymers (DHBCs). Micelles are observed only at an intermediate cosolvent fraction, forming abruptly at a specific solvent/cosolvent mixing ratio and gradually disappearing with further ...
arxiv  

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