Determination of Intramolecular Motion in a Random-Coil Polymer by Means of Quasielastic Light Scattering
β Scribed by Huang, Wu-Nan; Frederick, J. E.
- Book ID
- 126772805
- Publisher
- American Chemical Society
- Year
- 1974
- Tongue
- English
- Weight
- 704 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0024-9297
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π SIMILAR VOLUMES
Application of an applied electric field to a system of charged molecules superimposes a constant drift velocity on the random thermal motions of the molecules. The spectral density of light scattered from this system 1s frequency shifted by an amount proportional to the electrophoretic mobility of
Quasielastic light scattering is now a ~rcll-established technique for rapid determination of diffusion coefticients from the spectral density of Rayleigh scattered tight. Application of a constant electric field in the course of a quasiehstic light scattering experiment. a technique termed electrop
~n d~ermined over a r~ngex~O ]48~,230 by ~si~ qu~e]~ic ]~ sc~nerJ~. ~ Ihe ~mp~[i~ dependence ofD, ilis concl~ ~1 the diffusion c~ffici~t ~es its n~mum value ~t x = 0.l 6 S. F~om the ~mp~ition depeodenco ~3. mi~ scopic oxygen ion hopping p~ce~ in ~SZis ~v~led and ~t i~ sho~n that the micro~ma ~d the