| 초록 |
Materials in nature provide broad range of useful inspiration for preparing smart micro-building block. One of most interesting materials will be stimulus responsive polymers. Diverse range of examples has been reported about preparation of smart materials made of stimulus responsive polymers. In this study, we attempt to incorporate temperature responsive hydrogel into microbuilding block to produce multicompartmental microfibers in shape of core-shell structures by electrohydrodynamic co-jetting. Core-shell microfibers are jetted with parallel flow of solutions containing PNIPAM-co-PGMA in core and PLGA in shell. The water soluble PNIPAM-co-PGMA, is crosslinked with ethylenediamine during co-jetting. The core/shell microcylinders containing hydrogel in the cores shows reversible shape shifting by change of external environmental. The fibers are characterized by scanning electron microscope, confocal laser scanning microscope, and optical microscopy. |
