| 초록 |
The fabrication of cellulose nanofiber (CNF) reinforced composites has been until now debatable due to difficulties in obtaining homogeneous dispersion of hydrophilic CNFs in a hydrophobic polymer matrix. In this study, Polylactic acid (PLA) / CNF nanocomposites were prepared by melt mixing method with triethyl citrate (TEC) as plasticizer. And TEC has been used as a plasticizer and processing aid to facilitate CNF dispersion. The reinforced nanocomposites were prepared with 1 wt% CNF content and varying amounts of TEC. Due to the effect of the plasticization, the increase of elongation at break was confirmed, and the plasticizer content having the optimum physical properties was found. In the morphology analysis using scanning electron microscopy (SEM), we confirmed that CNF is well dispersed in the PLA matrix. Oxygen and water vapor barrier properties of the nanocomposites were evaluated by various analytical instruments to achieve optimized property and performance. |
