Excluded Volume of Compact Molecules

The excluded volume of rigid macromolecules is calculated relatively easily, since the excluded volume between molecules need only be considered. The excluded volume within a rigid molecule is, by definition, zero. 

In calculating the excluded volume of rods, these are assumed to be 

The excluded volumes of other rigid particles can be analogously calculated. Excluded volumes, radii of gyration, and characteristic ratios of various rigid particles are given in Table 4-6. 

---