ISSN:
0098-1273
Keywords:
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The concentration dependences of the friction coefficient(s) for poly(ethylene oxide) have been determined on well-defined fractions in dilute aqueous solution. Three independent techniques have been used: FT-pulsed field gradient NMR (self-diffusion), photon correlation spectrosccpy (mutual diffusion), and velocity sedimentation, in the concentration range 1-25 kg m-3. The results establish that, at a given concentration, the friction coefficient in self-diffusion is appreciably smaller than that operating in mutual diffusion and sedimentation; the friction coefficient in the latter processes are identical within experimental error.
Additional Material:
9 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1983.180210704
