| 초록 |
The non-biodegradability of most plastics has caused many environmental problems associated with their disposal. Hence, to reduce the dependence on landfills, there has been an increased interest in the production and use of biodegradable polymers. Among the commercially available biodegradable plastics, polycaprolactone (PCL) has received much attention due to its high flexibility, biodegradability and hydrophobic nature. The physical properties and morphology of PCL/starch blends comprising cellulose or leaf powder were investigated in this study to see if commercial biodegradable plastics comprising plenty of natural resources could be developed. The content of starch in the PCL/starch binary blends was changed from 0 to 70 wt%. After blending PCL and starch, 5-20 phr of cellulose or leaf powder was added to the blends. Scanning electron microscopy (SEM) and UTM were used to investigate the morphology and mechanical properties of the blends. The thermal properties of the blends were measured using DSC. The water resistance and biodegradability of the blends were estimated . |
