| 초록 |
This study investigated the stereocomplex-induced surface structure of enantiomeric poly(lactide) (PLA) blend films by time-of-flight secondary ion mass spectrometry (TOF-SIMS). The design of the blend systems was based on the principle of surface segregation of a modified component with a low surface energy, fluorine-end capped PLLA (F-PLLA). In addition to analysis of F-PLLA blended with PDLA and PLLA, for which there was a difference in the ion beam-induced behavior between fluorine and lactide groups, a completely phase-separated sample of PLLA with the fluorine end-capping agent dropped onto it was used for a real analysis of peak intensities from the two components, simulating bulk compositions. The two blend systems, uncomplexed (F-PLLA/PLLA) and complexed (F-PLLA/PDLA) blends, showed quite different surface structures. |
