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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Polymer bulletin 20 (1988), S. 493-498 
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary The solution behavior of halato-telechelic ionomers (polybutadiene with carboxylate end groups) in a low-polarity solvent (tetrahydrofuran (THF)) was studied. It was shown that the degree of aggregation can be expressed as a function of polymer concentration by an empirical equation, DA - 10βc, where DA is the degree of aggregation, c is polymer concentration, and β is a constant relating to the rate of aggregation with polymer concentration. It was also shown that the aggregation effect of the Na salt was larger than that of the Cs salt, which was reflected in the value of β.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 20 (1999), S. 857-865 
    ISSN: 1572-9567
    Keywords: block copolymer ; orientation ; shear ; small-angle X-ray scattering
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Small-angle X-ray scattering is used to examine quantitatively the distribution of lamellar orientation in shear aligned diblocks as a function of strain amplitude at constant shear duration, frequency, and temperature. At all strains, predominantly perpendicular alignment is observed with some parallel alignment. Also, there is a small amount of transverse alignment. This suggests that alignment by shear occurs at the expense of intermediate alignments followed by reducing transverse alignment. Increased strain at constant time increases the sharpness of the distribution of perpendicular alignment.
    Type of Medium: Electronic Resource
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