摘要
A new model for concentration dependence of polymer chain dimensions over the wholeconcentration range was proposed. The hydrodynamic volume of a solvated macromoleculewas found to be a universal function of the degree of coil overlapping (c/c~*). The radiusof gyration (R_g) and the expansion coefficient (α) of polymer in solution or in bulk. pre-dicted by this model are much better in agreement with the experimental data of small angleX-ray scattering and neutron scattering from literature, than with the values predicted byother models and theories.
A new model for concentration dependence of polymer chain dimensions over the whole
concentration range was proposed. The hydrodynamic volume of a solvated macromolecule
was found to be a universal function of the degree of coil overlapping (c/c~*). The radius
of gyration (R_g) and the expansion coefficient (α) of polymer in solution or in bulk. pre-
dicted by this model are much better in agreement with the experimental data of small angle
X-ray scattering and neutron scattering from literature, than with the values predicted by
other models and theories.
