HYDRODYNAMIC PROPERTIES AND MOLECULAR CHA RACTERISTICS OF POLY(METHACRYLOYLGLUCOSAMINE)

The fractions of poly(methacryloylglucosamine) with molecular masses 7 less-than-or-equal-to M x 10(-4) less-than-or-equal-to 550 were studi ed in water by the methods of molecular hydrodynamics. The relationshi ps [eta] = 2.03 x 10(-3)M0.772, D0 = 2.64 x 10(-4)M-0.560, S0 = 3.55 x 10(-15)M0.440, and k(S) = 0.34S0(2.0) were obtained. Hydrodynamic inv ariant A0 = (3.25 +/- 0.3) x 10(-10) erg K-1 mol-1/3 and sedimentation parameter beta(S) = (1.1 +/- 0.2) x 10(7) mol-1/3 were also calculate d. The equilibrium rigidity A0 and hydrodynamic diameter of molecules modeling macromolecules in solution were evaluated on the basis of the theory of the wormlike necklace model with the effects of excluded vo lume taken into account at different values of the excluded-volume par ameter.