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  • 1
    Electronic Resource
    Electronic Resource
    Development of a simple experimental method to measure interphase composition profiles generated by diffusion in polymers (1997)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 35 (1997), S. 2435-2445 
    Details
    ISSN: 0887-6266
    Keywords: diffusion ; interphase ; composition profiles ; interdiffusion ; Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: An experimental method to determine interphase composition profiles in amorphous polymers pairs and polymer-solvent pairs is presented. The method is based on the measurement of dynamic mechanical properties of slender composite beams, and well-established properties of amorphous polymer homogeneous blends and solutions. The method does not require tracers. A simple calibration procedure is included in the description, and some results for a polystyrene-polystyrene pair are used to illustrate the method application. © 1997 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 35: 2435-2445, 1997
    Additional Material: 18 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
  • 2
    Electronic Resource
    Electronic Resource
    Development of a simple experimental method to measure interphase composition profiles generated by diffusion in polymers. Further results and comparison with Raman spectroscopy (1998)
    Weinheim : Wiley-Blackwell
    Macromolecular Rapid Communications 19 (1998), S. 413-417 
    Details
    ISSN: 1022-1336
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Composition profiles generated by interdiffusion in the concentrated regime between poly(phenylene oxide)-polystyrene (PPO-PS) blend pairs are experimentally determined by two techniques. Three-point bending moment measurements over a convenient temperature range (DMA (dynamic mechanical analysis) method) are used to determine interphase composition profiles. Confocal micro-Raman spectroscopy is also used to measure local compositions along a direction which is perpendicular to the original interface. The study includes some limiting cases, to test accuracy, precision and flexibility of the “DMA method”. Excellent agreement is found between results obtained by both independent methods.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
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