ISSN:
0022-3832
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The recent Fixman's variational theory devised to compute the osmotic pressures of high polymer solutions in the moderate concentration range has been applied to the polyisobutylene - chlorobenzene system at 25°C and 40°C. The osmotic pressures have been measured with an osmometer similar to that described previously by Flory and Daoust. As predicted by the theory, a plot of the apparent osmotic second virial coefficient against concentration gives a curve which rises then flattens out as concentration increases, at both temperatures. Correlation between experimental data and theory is slightly better if the Kurata- Yamakawa theory is used to calculate the linear expansion factor of the polymer coil α and to define the second virial coefficient A2.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1962.1205716505
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