The results of an extensive study of some dilute solution properties of a series of linear, homogeneous (anionically prepared) polystyrenes (4.8<10−4M<440) over a wide temperature interval (10°<T<110°C) in decalin and toluene are described. The data are used to obtain detailed comparisons among the second virial coefficient A2, the mean‐square molecular radius 〈s2〉, the molecular weight M, and the temperature. The empirical correlations thus obtained are compared to theoretical predictions. In particular, it is found that A2M½(〈s2〉/M and α2=〈s2〉/〈s2〉0 are each single‐valued functions of the interaction parameter z=B(〈s2〉0/MM½, when B is assumed to have the temperature dependence B=B0[1—(Θ/T)]. Certain theoretical predictions for the dependence of A2M½/α3 on z/α3 are found to adequately describe the form of the observed behavior and can be used as the basis for a satisfactory empirical relation. The observed dependence of α2 on z is satisfactorily predicted by recent calculations of Flory and Fisk. It is expected that the correlations given among A2, α2, and z will be valid for any flexible, nonionic polymer.
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15 June 1966
Research Article|
June 15 1966
Thermodynamic and Conformational Properties of Polystyrene. I. Light‐Scattering Studies on Dilute Solutions of Linear Polystyrenes
G. C. Berry
G. C. Berry
Mellon Institute, Pittsburgh, Pennsylvania
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J. Chem. Phys. 44, 4550–4564 (1966)
Article history
Received:
January 31 1966
Citation
G. C. Berry; Thermodynamic and Conformational Properties of Polystyrene. I. Light‐Scattering Studies on Dilute Solutions of Linear Polystyrenes. J. Chem. Phys. 15 June 1966; 44 (12): 4550–4564. https://doi.org/10.1063/1.1726673
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