Fig. 4

(A)–(C) The swelling coefficient Q for the SW30 samples as a function of time for the three solvents. (D) The swelling coefficient Q for the three solvents as a function of γ-irradiation doses for the SW30 samples.

(A)–(C) The swelling coefficient Q for the SW30 samples as a function of time for the three solvents. (D) The swelling coefficient Q for the three solvents as a function of γ-irradiation doses for the SW30 samples.