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  • 1
    Electronic Resource
    Electronic Resource
    Small-angle neutron-scattering studies on ordered polymer colloid dispersions (1990)
    s.l. : American Chemical Society
    Langmuir 6 (1990), S. 303-307 
    Details
    ISSN: 1520-5827
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/la00092a002
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Small angle neutron scattering studies on non-aqueous dispersions of calcium carbonate (1984)
    Springer
    Colloid & polymer science 262 (1984), S. 648-656 
    Details
    ISSN: 1435-1536
    Keywords: adsorption ; calcium carbonate ; neutron scattering ; nonaqueous dispersions ; surface active agent
    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 dispersions of calcium carbonate in toluene, with the particles stabilised by an alkyl aryl sulphonic acid, have been examined by small angle neutron scattering. On the basis of the assumption that the adsorbed layer of stabilising surface active agent formed a concentric shell around a spherical calcium carbonate core particle, a method was developed to determine both the radius of the core particle and the thickness of the adsorbed layer. For the two series of particles examined the calcium carbonate core particles were found to have radii of 22 and 67 å respectively and in both cases the adsorbed layer thickness was found to be 19.0±1 å. The method provides a means of obtaining adsorbed layer thicknesses under conditions where particle and layer cannot be separated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01452457
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Small angle neutron scattering studies on nonaqueous dispersions of calcium carbonate Part 2. Determination of the form factor for concentric spheres (1986)
    Springer
    Colloid & polymer science 264 (1986), S. 65-76 
    Details
    ISSN: 1435-1536
    Keywords: Calcium carbonate ; non-aqueous dispersions ; neutron scattering ; concentric spheres ; adsorbed layers
    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 dispersions of calcium carbonate, stabilised primarily by a surface active agent, in both toluene and dodecane have been examined by small angle neutron scattering. A model has been developed to simulate the scattering behaviour of the particles and is based on the idea of a concentric sphere with a homogeneous layer of adsorbed material surrounding a core particle. Computations based on the model show a wide variation of scattering behaviour with variation of the coherent scattering length of the dispersion medium. These predictions were confirmed by experiment. A method is described for analysis of the experimental data which leads to a determination of the thickness of the adsorbed layer, the radius of the core particle and the standard deviation of core particle radius.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01410309
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Small angle neutron scattering studies on non-aqueous dispersions of calcium carbonate. Part III. Concentrated dispersions (1986)
    Springer
    Colloid & polymer science 264 (1986), S. 454-462 
    Details
    ISSN: 1435-1536
    Keywords: Dispersions ; neutron scattering ; polymeric stabilisation ; interaction potential
    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 Small angle neutron scattering has been used to examine calcium carbonate dispersions in toluene over the w/w concentration range 5 to 40 %. The particles were stabilised by a combination of a surface active agent and a linear polymeric molecule. Analysis of the experimental data gave results for the structure factorS(Q) and the pair correlation functiong(r).Theoretical computations of the structure factor were made using a hard sphere model and the mean spherical approximation approach. These analyses indicated that the interaction was essentially soft at low volume fractions but became hard at the higher volume fractions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01419551
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    Paper (German National Licenses)
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