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  • 1
    Electronic Resource
    Electronic Resource
    Depletion Flocculation Strategy for the Fabrication of Ceramic Powder Coatings on Ceramic Fibers (1999)
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 82 (1999), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A colloidal processing approach combining the phenomena of depletion flocculation and steric stabilization has been used in the preparation of high-quality coatings (monolayer and thicker) of silicon particles on silicon carbide fibers. Grafting procedures for the steric additive and the use of the depletion flocculation method to achieve dispersions of relatively high solids concentration are described. The impact of processing parameters on coating quality is demonstrated through electron microscopic images. The relationship between optimal processing parameters and the size and shape characteristics of the solid particles used is also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1151-2916.1999.tb02128.x
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  • 2
    Electronic Resource
    Electronic Resource
    Counteracting Flow Electrophoresis: A Technique for Separating Biochemicals or Charged Macromolecules (1994)
    s.l. : American Chemical Society
    Biotechnology progress 10 (1994), S. 246-252 
    Details
    ISSN: 1520-6033
    Source: ACS Legacy Archives
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bp00027a002
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Molecule-micropore interaction potentials (1988)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 92 (1988), S. 4006-4007 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100324a063
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    A formulation of the short-range repulsion between spherical colloidal particles (1984)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 88 (1984), S. 5735-5739 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150667a055
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Kinetics of coupled primary- and secondary-minimum coagulation in colloidal dispersions (1985)
    s.l. : American Chemical Society
    Langmuir 1 (1985), S. 691-696 
    Details
    ISSN: 1520-5827
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/la00066a010
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  • 6
    Electronic Resource
    Electronic Resource
    Fractionation of suspensions using synchronized ultrasonic and flow fields (1993)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 39 (1993), S. 197-206 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A fractionation method for fine-particle suspensions using resonant ultrasonic fields coordinated with bidirectional fluid flow fields is described. The basis for the separation is differences in the speed of response of particles to the imposition of a resonant acoustic field. As such, the method is sensitive to the particle size and the acoustic contrast between the solid particles and their suspending fluid. Both batch and continuous fractionation processes can be developed from a two-step acoustic-flow cycle. An analytical model was constructed from equations that describe the trajectories of particles as they respond to the acoustic and flow fields. Model predictions indicate how the fractionation can be controlled through choice of cycle parameters. The method was implemented experimentally. Results for the fractionation of 325-mesh polystyrene spheres indicate that sharp fractionations can be achieved. The experimental results are generally in agreement with the model predictions.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690390202
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  • 7
    Electronic Resource
    Electronic Resource
    Analysis of dispersion of carbon black in polymeric melts and its effect on compound properties (1992)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 32 (1992), S. 130-135 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The dispersion of carbon black agglomerates within melts of polystyrene and high density polyethylene has been investigated. Analysis of the evolution of the fragment size distribution indicates that a coarse rupturing of the agglomerates occurs during the early stages of the dispersion. This is followed by a more gradual erosion of small aggregates from larger fragments. These observations compare quantitatively with results of dispersion studies performed in fluid media having a viscosity two orders of magnitude smaller than that of the polymeric melts. The influence of dispersion quality on certain physical properties of the resulting polymeric compounds, namely UV absorption characteristics and tensile strength properties, is also quantified.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760320209
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  • 8
    Electronic Resource
    Electronic Resource
    Analysis of titanium dioxide agglomerate dispersion in linear low density polyethylene and resulting properties of compounds (1995)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 35 (1995), S. 1037-1045 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The dispersion of titanium dioxide agglomerates within linear low density polyethylene (LLDPE) melts has been investigated by using a cone-and-plate device installed within a temperature controlled oven. Observation of fragment evolution indicates that erosion is the predominant mechanism of dispersion. The erosion rate of titanium dioxide agglomerates in LLDPE was consistenty with the results obtained in previous dispersion studies of titanium dioxide in polydimethyl siloxane (PDMS). The effect of agglomerate dispersion on the optical, tensile, and dynamic mechanical properties of compounds incorporating titanium dioxide was also investigated. Changes in compound properties were correlated with observed morphology changes of agglomerates in order to clarify the effect of dispersion.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760351212
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  • 9
    Electronic Resource
    Electronic Resource
    Assessment of the dispersibility of surfactant-treated titanium dioxide powders for compounding with polyethylene (1995)
    Brookfield, Conn. : Wiley-Blackwell
    Polymer Composites 16 (1995), S. 489-494 
    Details
    ISSN: 0272-8397
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: A strategy involving the use of anionic surfactants to compatibilize titanium dioxide powders with nonpolar polymers has been applied to facilitate the dispersion of these powders into polymer composites. The methodology first involves the adsorption of surfactant onto the powder within aqueous dispersions. Surfactantcoated powders are then removed from the dispersion and dried. The cohesivity and some surface properties of the surfactant-coated powders were measured and compared to that of the uncoated powders. Dispersion experiments of titania agglomerates in polyethylene were performed in a rotating cone-and-plate device set within a temperature controlled oven. The titania agglomerates dispersed by an erosion mechanism in which small fragments detached from the surface of the parent agglomerate. The erosion rate was higher for the surfactant treated powders in comparison to uncoated powders. The links between the enhanced erosion rates and the surfactant coating were investigated in terms of the cohesivity of the powders, the penetration of the polymer into the agglomerates, and the interactions between the powders and the polymer media that govern wetting and the transmission of hydrodynamic stress.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pc.750160607
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