| 초록 |
Poly(lactic acid)(PLA) is a representative biodegradable polymer that is a kind of aliphatic polyester. And it has similar stiffness and tensile strength to PET and is capable of melt processing, attracting attention for disposable packaging materials. However, due to the brittleness and low elongation, the blown film process is disadvantageous, making it difficult to apply it to film packaging materials. In this study, it is aimed to improve plasticity and elongation in order to apply blown film process to PLA. For this purpose, five plasticizers such as adipic acid, adipate and ester were blended in PLA, and analyzed mechanical and thermal properties. As a result, it was confirmed that the plasticity and elongation of PLA were improved. Based on these results, it is expected that it would be helpful to develop biodegradable film packaging materials by blending other biodegradable polymers or chemically reactive aditives with modified PLA |
