Abstract
The changes in phase transition temperature(Tm), enthalpy(ΔH), H/HHW(height/half-height width)value of dimyristoy land dipalmitoyl phosphatidyl choline(DMPC, DPPC)liposomes induced by phenyl-P, HEMA, 4-META, MMA, TEDMA, Bis-GMA, Iso-Bis-GMA were studied by differential scanning calorimetry(DSC), in order to clarify the mechanism of phospholipid interaction with monomers in bonding agents.Phospholipid interactions with these monomers were examined by 1H-NMR spectroscopy.It is suggested that the changes in the Tm, ΔH, H/HHW values may not only be due to the hydrophobic interaction, but also due to the double bonds or the functional groups(amino, hydroxy, phosphate, etc.)in monomers.The profiles of these adhesive monomers using DPPC liposomes were characterized by shift in Tm usually to a lower temperature and a decrease in ΔH with a reduced H/HHW value.Iso-Bis-GMA changed transition behavior more singnificantly than Bis-GMA.
