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When aniline is oxidized in the presence of colloidal silica, composite polyaniline-silica particles of submicrometer size are obtained. Dynamic light scattering was used to monitor the course of dispersion polymerization of aniline and the formation of particles. The increase of a hydrodynamic...
The behavior of the single spreading monolayers of β -lactoglobulin ( β -LG) and dioleylphosphatidylcholine (DOPC), as well as their mixtures, has been studied on subphases containing Na + or Ca ++ ions. The results show an influence of temperature and subphase on the studied systems. The...
The effect of pH on the flow behavior of ZrO 2 suspensions containing polyacrylic and octanoic acids was evaluated. In the flocculated pH regime, the flow behavior is highly shearthinning and can be described by a power-law model. The shearthinning behavior increases with increasing degree of...
The interaction of a series of polyethoxylated octylphenols (ethylene oxide units average 8.5–20.0) with liposomes modeling the stratum corneum (SC) lipid composition (40% ceramides, 25% cholesterol, 25% palmitic acid and 10% of cholesteryl sulfate) was investigated. The surfactant/lipid molar...
Micron-sized mono-dispersed polystyrene (PS)/poly( n -butyl methacrylate) (PBMA) composite particles (PS/PBMA=2/1 by weight) having a heterogeneous structure in which many fine PBMA domains dispersed in a PS matrix near the particle surface were produced by seeded polymerization of n -butyl...
The self-diffusion in a polystyrene-b-polyisoprene diblock copolymer with a strongly asymmetric composition was investigated with dependence on temperature by pulsed field gradient (PFG) NMR. The diblock shows with decreasing temperature a disorder-to-order-transition at T ODT =393 K from a...
Polystyrene microspheres having roughly the same size but different negative surface charge densities were prepared by emulsion polymerization. The amount of sulfate groups on the surface of the particles was controlled by variation of the amount and the decomposition rate of the initiator used,...
Surface tension measurements in aqueous cetyltrimethyl ammonium bromide were performed in presence of various amounts of 9-(hydroxymethyl)anthracene (AM), 9-(1-(1-hydroxy)ethyl)anthracene (THAE), and 9-(1-(1-hydroxy-2,2,2-trifluoro)ethyl)anthracene (TFAE). Free energies ΔG m ⊝ and ΔG i ⊝ of...
When used as a precipitation media, emulsified mixtures of cetyltrimethylarnrnonium bromide/ n -butanol (E), hexadecane (O) and water (W), controls the size and shape of calcium carbonate particles. Monodisperse 2-micron spherical-calcite particles were obtained in a water-rich region of the...
The effect of small amounts of salt on the interaction between two fractions of ethyl(hydroxy)ethyl cellulose, EHEC, and sodium dodecyl sulfate, SDS, has been investigated by means of steady-state fluorescence measurements. The two polymer fractions display different properties in hydrophobicity...
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