The effect of the dipole moment on the second virial coefficient of polyelectrolytes

The basic equations for equilibrium ultracentrifugation of polyelectrolytes were examined. It was concluded that if a polyelectrolyte possesses a permanent dipole moment such as zwitterions or if one polyelectrolyte molecule is capable of inducing a dipole moment on another, then this permanent or induced dipole moment may appreciably decrease the concentration dependence in molecular weight determinations.