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  • 1
    Electronic Resource
    Electronic Resource
    Colloidal single crystals of silica spheres in the presence of simple- and poly-electrolytes, and ionic detergents (1996)
    Springer
    Colloid & polymer science 274 (1996), S. 73-80 
    Details
    ISSN: 1435-1536
    Keywords: Colloidal crystals ; silica spheres ; electrical double layer ; single crystals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Colloidal single crystals of silica spheres (103 nm in diameter) are formed in the presence of various kinds of salts 1 simple electrolytes, i.e., sodium chloride, calcium chloride and lanthanum chloride, 2 polyelectrolytes such as 3–6 type ionen polymer (polybrene), poly-N-ethylpyridinium bromide, a copolymer ofN-benzyl pyridinium chloride andN-hexadecyl pyridinium bromide, and sodium polyethylene sulfonate, and 3 cationic and anionic detergents, hexadecyltrimethylammonium bromide and sodium dodecylsulfate. Shape and size of their single crystals, phase diagram, and the relationship between the two parameters among the critical concentration of melting, conductance and pH of the crystal-like suspensions have been studied. Colloidal single crystals ofpositively charged spheres have been formed in this study by the method of the charge reversal of spheres through the strong adsorption of cationic polyelectrolytes onto the anionic silica spheres.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00658912
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Direct estimation of dynamic characteristics and interaction potential of latex particles interacting with a glass surface by evanescent wave light-scattering microscope method (1995)
    Springer
    Colloid & polymer science 273 (1995), S. 1201-1205 
    Details
    ISSN: 1435-1536
    Keywords: Evanescent wave light scattering ; colloidal particle ; interaction potential ; thermal vibration ; particle-wall interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The dynamic and static characteristics of a polystyrene latex particle in dispersion interacting with a glass surface were studied by the evanescent wave light-scattering microscope (EVLSM) technique originally proposed by Prieve et al. for static studies. The dynamic behavior of the thermal vibration of the particle in a potential well created by electrostatic interaction between the particle and glass and gravity was clearly and quantitatively estimated, in addition to the estimation of the potential profile itself. The potential minimum became shallower with increasing added salt concentration. It was also clearly observed that the vibrational motion of the particle in the well became large in amplitude and the probability of the occurrence of the large vibration became large with increasing salt concentration. Such information on the dynamics is essential for the correct under-standing of the interaction potential. The EVLSM method is shown to be a very powerful technique for the estimation of not only the potential profile but also dynamic characteristics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00653090
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    Paper (German National Licenses)
    Fulltext
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