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  • 1
    Electronic Resource
    Electronic Resource
    A predictive model for the alkylamine-quartz flotation system (1985)
    s.l. : American Chemical Society
    Langmuir 1 (1985), S. 701-708 
    Details
    ISSN: 1520-5827
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/la00066a012
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nucleation and growth of monosized titania powders from alcohol solution (1986)
    s.l. : American Chemical Society
    Langmuir 2 (1986), S. 251-255 
    Details
    ISSN: 1520-5827
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/la00068a025
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Particle size distribution effects on sintering rates (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 60 (1986), S. 383-391 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Recent interest in the use of near-monosize powders for ceramic processing has provoked questions concerning the dependence of the processing on the particle size distribution. One such factor is the sintering rate of the compact produced from a powder with a narrow particle size distribution. This issue is addressed theoretically by considering a log-normal particle size distribution which is characterized by a mean particle size and a width parameter. The sintering rates derived for model systems are examined for both the initial and intermediate stages, and these rates are found to be a strong function of the distribution width parameter. The sintering ability of a compact decreases with a broader particle size distribution and this effect becomes dramatic in the intermediate stage when grain growth is considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337659
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Modelling the precipitation of copper oxalate aggregates (1990)
    Springer
    Colloid & polymer science 268 (1990), S. 864-876 
    Details
    ISSN: 1435-1536
    Keywords: Copper oxalate ; batch reactor ; mathematical model ; atomistic growth ; particle aggregation
    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 precipitation of copper oxalate has been studied in a batch reactor. Like many other systems, the morphology of these particles suggests that they were formed by an aggregation mechanism. A mathematical model has been developed to predict particle-size distributions grown in a batch reactor, which accounts for growth by two competing mechanisms, i.e., atomistic growth and particle aggregation. The results of this model are in good agreement with experimental observations for the precipitation of copper oxalate aggregates and other spherical aggregation systems cited in the literature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01410964
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Coagulation kinetics of amorphous colloidal silica suspensions with and without hydroxypropyl cellulose polymer (1991)
    Springer
    Colloid & polymer science 269 (1991), S. 843-849 
    Details
    ISSN: 1435-1536
    Keywords: Coagulation rate constant ; colloid stability ratio ; adsorption isotherm ; photon correlation spectroscopy ; silica ; hydroxypropyl cellulose
    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 coagulation rate constant of submicron silica has been measured as a function of solution pH, salt concentration and hydroxypropyl cellulose (HPC) polymer concentration. Results show that the colloidal stability of silica is dominated by the cation concentration in the presence of salt in the pH range 3–9.5. The stability increases as cation concentration decreases. At low salt concentration and a minimum colloid stability was found in the intermediate pH range 4–8. These results show that differences in the literature values of the critical coagulation constant by relative light-scattering experiments can be explained by the use of the coagulation rate constant analysis. When HPC polymer was present in the solution, the colloid stability of the silica increased. The adsorption of polymer stabilizes the silica suspensions, both at low pH near the isoelectric point and at high ionic strength where it coagulates without the polymer. A monolayer coverage was necessary to provide steric stabilization. At 10−3 M KCl a smaller equilibrium concentration of HPC in solution is needed to give monolayer coverage and steric stabilization than at 1 M KCl and pH 4.2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00657451
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    Paper (German National Licenses)
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