| 초록 |
The monoolein (MO) cubic phase having the release characteristics by oxidation was prepared by containing poly(hydroxyethyl acrylamide-co-phenyl vinyl sulfide) (P(HEAA-co-PVS)) in the water channel of cubic phase. H2O2 was treated to oxidize P(HEAA-co-PVS). This result was confirmed by the migration of chemical shifts in the 1H NMR spectrum. In addition, oxidation of sulfoxide to sulfoxide and sulfone was confirmed using X-ray photon spectroscopy. The surface tension of P(HEAA-co-PVS) before and after the H2O2 treatment was measured. As a result, the surface tension after H2O2 treatment was increased because P(HEAA-co-PVS) is oxidized and loses its amphiphilicity. The higher the concentration of treated H2O2, the higher the release degree were observed. P(HEAA-co-PVS) in the water channel due to oxidation lost its amphiphilicity ability and could not interfere with the diffusion of the allura red AC. The release was promoted accordingly. |
