Biopolymers and Biomass polymer composites have been extensively interested not only as a solution to growing environmental threats but also as a solution to alleviating the uncertainty of the petroleum supply in recent years. In our previous studies, we investigated the mechanical and tribological properties of natural fiber reinforced biopolymer composites such as hemp fiber (HF) reinforced plants-derived polyamide 1010 (PA1010) biomass composites and the blend of these composites and plants-derived thermoplastic elastomers (TPE) such as polyamide 11 elastomer (PA11E) and thermoplastic polyurethane elastomer (TPU). It was found that the mechanical and tribological properties of these composites are improved with the filling of hemp fibers, their surface-treatment by silane coupling agent and the addition of TPE. However, in order to achieve further higher performance in the natural fiber reinforced biopolymer composites, there is a key issue that the thermal properties of these biomass composites is very critical to understand heat resistance, internal microstructures, their change and structure-property relationships of these materials. The aim of this study is to improve the performance of all inedible plants-derived materials for new engineering materials such as structural materials and tribomaterials. Thermal properties such as dynamic viscoelastic properties in solid state (DMA), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) of hemp fiber filled polyamide 1010 biomass composites and the blend of these composites and plants-derived TPE were investigated experimentally.