Abstract
Specific Kerr constants K extrapolated to zero concentration were determined. Experimental results obtained were satisfactorily described by the theoretical dependence of K on the contour length of polyamide hydrazide molecules for kinetically rigid worm-like chains. Using this theory the gradient of the dipole moment of the monomer unit to the direction of polyamide hydrazide chain θ = (61·5 ± 1·5)° was determined. Comparison of relaxation times obtained using curves of the decay of birefringence after the electrical impulse with the intrinsic viscosity of some polyamide hydrazide samples confirms the conclusion about the high kinetic rigidity of their macromolecules.
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