Figure 9.

The bare dynamic correlation length Figure 10. ^ , ^d, and for solution PS t. The symbols are spelled out in the (MW=5700)inCH-d. The solid and dashed arrows show the static and dynamic crossovers.

The description of the temperature variation of the correlation lengths (Eqs. 16, 17) does not take into account the existence of the tricritical © temperature in the phase diagram of polymer solutions (Fig.1). A more general scaling description may be achieved by using the scaling variable [ 16]:

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