Ro1 [r c k H[h2c211

with -qo = 552.7 mPa s, = 9.06 x 10-3Mwo.74cm3 g-1 and kH= 0.35, while the density p can be calculated from an equation proposed by Scholte [33]. Details are presented in another publication [ 18].

In Fig. 6 we show the strength A * of the nonequilibrium enhancement of the concentration fluctuations as a function of the concentration c. The circles represent the experimental data and the curve the values calculated from Eq. (4). It is seen that experiment and theory are in satisfactory agreement. We note that the nonequilibrium enhancement of the concentration fluctuations reaches a maximum when the concentration c is approximately equal to the overlap concentration. The nature of the nonequilibrium concentration fluctuations at higher polymer Concentration would be an interesting subject for future exploration.

Figure 6. Strength A* of the nonequilibrium enhancement of the concentration fluctuations as a function of the polymer concentration. The symbols indicate experimental data and the curve represents values calculated from Eq.(4).

Figure 6. Strength A* of the nonequilibrium enhancement of the concentration fluctuations as a function of the polymer concentration. The symbols indicate experimental data and the curve represents values calculated from Eq.(4).

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