| 초록 |
Polylactic acid(PLA) is a biodegradable polymer that is harmless to the human body and is a promising material used in various fields such as automobile interior materials, medical materials, and 3D printing materials. However, PLA has poor toughness due to its rigid backbone chain, which limits its use in wide fields. To improve these problems, PLA was effectively reinforced by reactive extrusion using thermoplastic polyurethane as an elastomer. At the same time, a plasticizer and a nucleating agent were used together to improve the crystallization rate, which affects processability and productivity. Successful modification of PLA compounds was confirmed through various analyses including mechanical properties. Improvements in this direction will enable the development of sufficiently extruded or injection molded applications and open the way to the production of PLA parts with greater impact resistance. |
