The author regrets that, in the expression of the Helmholtz free energy (Eq. (30)), the term should be replaced by . Correspondingly, the expressions of Eqs. (31), (32), and (36) should be corrected accordingly. The details on these corrections are given as follows:
The corrected Fig. 4 demonstrates that the thermal elastic inversion point corresponds to an extension of 6.25%, and the stretch ratio at which the change of temperature alters sign is 12.1%.
The author is grateful to Dr. X. Gao for his help to redepict Fig. 4.