Scaling theory is applied to derive expressions describing the influence of polymolecularity on the second virial coefficient, A , , as obtained from osmotic pressure and light scattering measurements. Numerical values of polymolecularity correction factors are calculated for Schulz-Zimm and logarit
On the second virial coefficients of polymers of various architectures
β Scribed by M.K. Kosmas; A.M. Kosmas
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 766 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0032-3861
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## Abstract It is shown that the recently developed scaling theory for the second virial coefficient, __A__~2~, of dilute solutions of polymers with nonβuniform molecular weight distributions in a good solvent is able to explain in principle all seemingly contradictory observations reported in the
The second and the third virial coefficients in the lattice model of athermal mixtures of molecules of difierent sizes are calculated. Ail computations have been done for two-and three-dimensional simple square and simple cubic lattices.
The Beth-Uhlenbeck formula is rederived using the notion of symmetrized and anti-symmetrized partition function introduced by Lee and Yang. By applying the method of complex angular momentum the summation of the phase shifts appearing in the formula is converted into an integral form. Consequently,