76. Using the experimental data, construct the curves of the kinetics of polymer swelling in a solvent. Graphically determine the corresponding swelling rate constants k.

Swelling time τ, h 10 20 30 40 50 70 100 130
Degree of swelling α 0.145 0.236 0.314 0.362 0.406 0.457 0.520 0.520

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