ISSN:
0098-1273
Keywords:
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
For a nondraining polymer coil in the vicinity of the theta temperature the cube of the viscosity expansion factor αη may be expanded in powers of the excluded-volume parameter z as αη3 = 1 + C1z + C2z2 + ···. No exact values of the coefficients C1, C2, ···, are as yet known. This paper aims at evaluating C1 by the Kirkwood-Riseman formalism of polymer hydrodynamics with no mathematical approximation. The analysis gives C1 = 1.29, which is much smaller than 1.55 derived on the basis of the same formalism by Kurata and Yamakawa. The approximations used by these authors are discussed by comparison of their analysis with the present one. The first-order excluded-volume effect on the translational friction factor is also evaluated in the same way as for the intrinsic viscosity, and the result is shown to agree quite closely with the exact value determined by Stockmayer and Albrecht.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1977.180151216
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