K. Dalnoki-veress et al., Glass transition reductions in thin freely-standing polymer films: A scaling analysis of chain confinement effects, J PHYS IV, 10(P7), 2000, pp. 221-226
In this paper we present a new analysis of data on the reduced glass transi
tions observed in thin freely-standing films. The empirical analysis presen
ted is highly suggestive of the existence of a mechanism of mobility in thi
n freely-standing films that is inhibited in the bulk and distinct from the
usual cooperative motion near the glass transition temperature T-g. A tent
ative mechanism for T-g reductions in thin freely-standing films is discuss
ed.