Comment on Justin E. Pye and Connie B. Roth, J. Polym. Sci., Part B Polym.Phys. 2015, 53, 64-75

K. L. Ngai, S. Capaccioli, D. Prevosto

Two transitions were found by ellipsometry in freestanding high molecular weight PS films by Pye and Roth (PR). PR suggested that the upper and the lower transitions both came from…