準希薄溶液における線状高分子の自己拡散係数の特性時間

抄録

The concentration dependence of characteristic time τ_r for self-diffusion coefficient D_s of linear polymers in good solvents was discussed in comparison with that of the weightaverage relaxation time τ_w for viscoelastic properties. Similarities were found for the concentration regions of τ_r, and τ_w, and also for the concentration dependences of τ's in the respective regions. On the basis of the similarities, it is pointed out that almost all the D_s data of polymers at finite concentrations so far published should not be discussed in terms of the reputation model since the solutions are not regarded as those in the well entangled regions.