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The mechanical properties of nanoscale free-standing polymer thin films exhibit size dependence due to surface effects. However, it remains a challenge to determine the length scales at which differences are exhibited between film and bulk polymer properties. Here we use molecular dynamics simulations to uncover the dependence of elastic modulus (E) of free-standing films on film thickness and bulk properties. Comparison of the glass transition temperature (Tg) andEindicates thatTgconverges todoi:10.1557/jmr.2014.289 fatcat:3ydbeprzcfbvtdyns65q6a3v7a