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Investigation of the mutual diffusion in poly(ethylene oxide)/poly(methyl methacrylate) blends by photon correlation spectroscopy (1991)

Xia, J. L. ; Wang, C. H.

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 94 (1991), S. 3229-3234

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ISSN: 1089-7690

Source: AIP Digital Archive

Topics: Physics , Chemistry and Pharmacology

Notes: Photon correlation spectroscopic studies of the mutual diffusion of poly(ethylene oxide)/poly(methyl methacrylate) (PEO/PMMA) blends are carried out. The experimental investigation deals with the measurement of the mutual diffusion coefficient of the PEO/PMMA blend by varying the molecular weight of PEO but keeping the molecular weight of PMMA fixed. At 20% volume fraction of PEO, and high PMMA molecular weight, the mutual diffusion coefficient linearly decreases with M−1PEO. The temperature dependence of the mutual diffusion coefficient is non-Arrhenius. The Onsager coefficient of mutual diffusion is obtained as a function of temperature.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.459792

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