| 초록 |
In this study, polycaprolactone (PCL)-grafted lignin (PCL-g-lig) was synthesized as a facile plasticizer for the biodegradable PCL nanofibers. At this time, fractionation of lignin was performed to increase the content of phenolic OH, the main reaction site, and the content of hydroxyl groups was confirmed through 31P NMR. The successful synthesis of PCL-g-lig was confirmed through 1H NMR and GPC analysis. A spinning dope solution was prepared by mixing PCL and PCL-g-lig in a certain ratio, and solution spinning was performed to prepare biodegradable PCL nanofibers. The physicochemical properties of the prepared PCL/PCL-g-lig nanofibers were analyzed using FE-SEM, tensile tests, UV absorbance, thermal analysis. As a result, it was confirmed that the addition of PCL-g-lig gave effective UV blocking properties to PCL nanofibers, thereby light induced mechanical deterioration can be strongly prevented. |
