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  • 1
    Electronic Resource
    Electronic Resource
    An analysis of apparent slip flow of polymer solutions (1986)
    Springer
    Rheologica acta 25 (1986), S. 28-35 
    Details
    ISSN: 1435-1528
    Keywords: Apparent slip ; macromolecule ; diffusion ; polyacrylamide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Abstract Theapparent slip flow phenomenon of polymer solutions in capillary tubes is analyzed by a thermodynamic diffusion model. An approximate solution of the developing concentration profiles shows a significant decrease in the polymer wall concentration. The approximate concentration profiles are coupled with the concentration-dependent viscosity for aqueous polyacrylamide solutions to provide a priori predictions of the magnitude of the effective slip velocity at the wall. The results are in a reasonable agreement with the available apparent slip data for 1% and 0.5% solutions of partially hydrolyzed polyacrylamide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01369977
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  • 2
    Electronic Resource
    Electronic Resource
    The rheological characterization of HPG gels: Measurement of slip velocities in capillary tubes (1986)
    Springer
    Rheologica acta 25 (1986), S. 397-404 
    Details
    ISSN: 1435-1528
    Keywords: Polymer wall-slip ; gel rheology ; slip-stick boundary condition ; fluid surface adherence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Abstract Measurements are reported for the properties of two hydroxypropyl guar (HPG) gels. The flow curves are composed of three distinct regions: a yield value at low stress levels, a quasi-linear region at intermediate stress or deformation rate levels, and a broad region at high deformation rate levels in which the flow is entirely dominated by slip phenomena.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01331511
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