Encontrados 5 documentos, a visualizar página 1 de 1
Shear-Induced Transitions between a Planar Lamellar Phase and Multilamellar Ves...
Medronho, B.; Shafaei, S.; Szopko, R.; Miguel, M. G.; Olsson, U.; Schmidt, C.The shear-induced transitions between an oriented lamellar phase and shear-induced multilamellar vesicles (MLVs) in a nonionic surfactant system were studied by deuterium rheo-NMR spectroscopy as a function of time in start-up experiments at several temperatures and shear rates. By starting from an initial state of oriented lamellae and observing the transformation to the final steady state of MLVs and vice-ver...
Polyion Adsorption onto Catanionic Surfaces. A Monte Carlo Study
Dias, R. S.; Pais, A. A. C. C.; Linse, P.; Miguel, M. G.; Lindman, B.The adsorption of a single and negatively charged polyion with varying flexibility onto a surface carrying both negative and positive charges representing a charged membrane surface has been investigated by using a simple model employing Monte Carlo simulations. The polyion was represented by a sequence of negatively charged hard spheres connected with harmonic bonds. The charged surface groups were also repres...
Self-Assembly of a Hydrophobically Modified Naphthalene-Labeled Poly(acrylic ac...
Costa, Telma; Miguel, M. G.; Lindman, Björn; Schillén, Karin; Lima, J. C.; Melo, J. Seixas deThe solution properties of two water-soluble polymers, poly(acrylic acid) (PAA), covalently labeled with the fluorescent hydrophobic dye naphthalene (Np), have been investigated in water:organic solvent mixtures. The naphthalene chromophores have been randomly attached, onto the polymer, with two different degrees of labeling. Fluorescence measurements (steady-state and time-resolved) have been used to follow t...
Sorption/diffusion behaviour of anionic surfactants in polyacrylamide hydrogels...
Valente, A. J. M.; Polishchuk, A. Ya.; Burrows, H. D.; Miguel, M. G.; Lobo, V. M. M.The sorption and diffusion processes of anionic surfactants with different chain length through polyacrylamide hydrogels with low swelling degree have been studied by electrical conductivity measurements. The multicomponent equilibrium equation has been used to model the sorption isotherms of different anionic surfactant in the hydrogels. Such isotherms show that initial rapid sorption of unimer surfactant into...
Diffusion coefficients of sodium dodecyl sulfate in water swollen cross-linked ...
Valente, A. J. M.; Burrows, H. D.; Miguel, M. G.; Lobo, V. M. M.http://www.sciencedirect.com/science/article/B6TWW-4603M7T-5/1/856606240860bfc6cbe86dfc5f5b4bfb
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||