| 초록 |
Poly(lactic acid) (PLA) has received much attentionas abiodegradable polymers due to biocompatibility,good mechanical properties, and low cost. However, PLA hassome drawbacksof low HDT and inferiorbarrier properties. In this study, therefore,poly(butylene succinate) (PBS), wasempoyed to compensate for the inferior properties of PLA itself. Nano claywas alsoincorporated to prepare PLA/PBS nanocomposites with enhancedproperties such asbarrier, thermal,mechanical properties.The compatibilizer (PLA-g-MAH), which wasobtainedby reactive extrusion,wasused to improve compatibility between PLA and PBS. The morphology of PLA/PBS nanocomposites wasobserved by TEM. The viscoelastic and tensile properties wereexamined using DMA and UTM instrument. In addition, cold crystallization behavior of the nanocomposite with various clay contents was studied using DSC.The results showed that The degree of crystallinity of PLA was not significantly affected by the contents of incorporated clay.Barrier properties of the nanocomposite films were investigated by the measurement of the oxygen and water vapor permeability. |
