2002
DOI: 10.1039/b111103e
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Composition fluctuations in a non-critical binary polymer blend studied by ultrasonic and light scattering experiments

Abstract: A non-critical mixture of polyethylene glycol (PEG600, M ¼ 600 g mol À1) and polypropylene glycol (PPG1000, M ¼ 1000 g mol À1) was investigated by ultrasonic and light scattering experiments in the one-phase region. The mass fraction of polypropylene glycol in the non-critical mixture was y PPG ¼ 0.365. The explored temperature and frequency range of the ultrasonic experiment was 0.1 T À T P 17.3 K and 0.4 MHz f 30 MHz (T P : phase separation temperature). The frequency dependence of the ultrasonic attenuation… Show more

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Cited by 8 publications
(7 citation statements)
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“…In the upper parts of the figures the net intensity correlation functions g 2 (t) À 1 (see ref. 19) are displayed and in the lower parts the analysis of these correlation functions with inverse Laplace transformation (using the CONTIN algorithm fitting the square of the first order correlation function) is represented.…”
Section: Dynamic Light Scatteringmentioning
confidence: 99%
“…In the upper parts of the figures the net intensity correlation functions g 2 (t) À 1 (see ref. 19) are displayed and in the lower parts the analysis of these correlation functions with inverse Laplace transformation (using the CONTIN algorithm fitting the square of the first order correlation function) is represented.…”
Section: Dynamic Light Scatteringmentioning
confidence: 99%
“…Nevertheless, the general features have been well established 1, 2. Neutron, X‐ray, and light scattering have been employed for the investigation of static properties and there have been several of photon correlation spectroscopy (PCS) investigations to elucidate dynamical properties of critical36 and noncritical79 polymer blends. All these experiments have been performed under isothermal conditions.…”
Section: Introductionmentioning
confidence: 99%
“…Frequenzabhängige Messungen des Schallabsorptionskoeffizienten an Polymerschmelzen, -mischungen und -lösungen wurden in den letzten Jahren von verschiedenen Arbeitsgruppen veröffentlicht [3][4][5]. Dabei stand insbesondere die Untersuchung des kritischen Entmischungsverhaltens von binären Polymer/Polymer-Systemen und Polymerlösungen im Vordergrund [3,5].…”
unclassified
“…Frequenzabhängige Messungen des Schallabsorptionskoeffizienten an Polymerschmelzen, -mischungen und -lösungen wurden in den letzten Jahren von verschiedenen Arbeitsgruppen veröffentlicht [3][4][5]. Dabei stand insbesondere die Untersuchung des kritischen Entmischungsverhaltens von binären Polymer/Polymer-Systemen und Polymerlösungen im Vordergrund [3,5]. Durch den nur schmalen verfügbaren Frequenzbereich (für die genannten Veröffentlichungen liegt er im Intervall 0.2-90 MHz) wird die Interpretation der sich über mehrere Dekaden erstreckenden Absorptionsspektren sehr erschwert.…”
unclassified
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