ISSN:
1572-9567
Keywords:
diffusion
;
forced Rayleigh scattering
;
holography
;
polymer solution
;
thermal diffusion
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The transient grating technique of thermal diffusion forced Rayleigh scattering (TDFRS) has been employed to study translational and thermal diffusion of polystyrene in toluene. Different molar masses and concentrations below or slightly above (lie overlap concentrationc * have been investigated. The translational diffusion coefficients agree well with results obtained from photon correlation spectroscopy. Small remaining diferences can be attributed to sample polydispersity. The molar mass independence of the thermal diffusion coefficient is confirmed, and thermal diffusion and Soret coefficients are compared with data obtained from thermal field flow fractionation and diffusion cell experiments.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01438953
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