Thermal analysis of pure PCL and PCL: lithium thiocyanate (LiSCN) salt complexes using different compositions were reported (Figure ) . DSC thermogram for pure PCL showed a relatively sharp endothermic peak at 64 °C. This observation indicates the high purity of the PCL. However, DSC thermograms of the PCL\LiSCN composite showed a shifting in the melting temperature (Tm) toward lower temperatures with increased LiSCN contents. The drop of Tm in the presence of the salt addition is due to the decrease in size and free energy (Figure ).