Based on the special molccular structure of surfactant paramagnctic material used as magnetic nucleus wascoated with two layers of surfactant inculding an inner layer and an outer layer and an outer layer Magnetic rea...Based on the special molccular structure of surfactant paramagnctic material used as magnetic nucleus wascoated with two layers of surfactant inculding an inner layer and an outer layer and an outer layer Magnetic reagent can combine with activated carbon due to adsorption of hydrophilic raclical of the outer surfactant layer so activated carbon has magnetism Theeffects of magnetic reagent dosage. pH and activator upon the magnetic susceptibility of activated carbon were studied.Conceming the optimal conditions. MR-20 is the best magnetic reagent. Concentration of CaCl2 is 0.02M and pH1.8-2.4The physical properties of magnetic activated carbon vary with the types dosage and magnetizing condition of magneticreagent.展开更多
Aim To study the interaction of puerarin (PU) with phospholipid (PL) in soliddispersion. Methods PU/PL solid dispersion was prepared with solvent evaporation and theinteraction between PU and PL was studied by analysi...Aim To study the interaction of puerarin (PU) with phospholipid (PL) in soliddispersion. Methods PU/PL solid dispersion was prepared with solvent evaporation and theinteraction between PU and PL was studied by analysis of their ultraviolet spectra, infraredspectra, ~1H NMR spectra and thin layer chromatogram. Results In chloroform the maximum absorptionpeak of PU in PU/PL mixture was located at 243 nm, but 251 nm for that of PU in solid dispersion.However in methanol, QU in mixture or solid dispersion had the same maximum absorption peak locationin ultraviolet spectra. Compared with the infrared spectra of mixture, that of solid dispersionshowed the specific absorption peak location of benzene ring framework in PU molecule was markedlychanged, the stretching vibration peak of P= O in PL molecule was shifted to high wavenumbers andthe stretching vibration peak of C = C in PL molecule was disappeared. In ~1H NMR spectra, most ofthe signals from PU in solid dispersion were weaken markedly or disappeared and the signals from thepolar part of PL molecule were significantly changed. PU and PL in solid dispersion could beseparated on silica gel plate with the mixed solvent of chloroform, methanol and water (65:25:5) orethyl acetate and methanol (10:1) . Conclusion In solid dispersion the benzene ring framework of PUmolecule could act with the polar part and unsaturated part of PL molecule through charges transfer,and the interacted part could be surrounded by fat chains of PL molecule.展开更多
文摘Based on the special molccular structure of surfactant paramagnctic material used as magnetic nucleus wascoated with two layers of surfactant inculding an inner layer and an outer layer and an outer layer Magnetic reagent can combine with activated carbon due to adsorption of hydrophilic raclical of the outer surfactant layer so activated carbon has magnetism Theeffects of magnetic reagent dosage. pH and activator upon the magnetic susceptibility of activated carbon were studied.Conceming the optimal conditions. MR-20 is the best magnetic reagent. Concentration of CaCl2 is 0.02M and pH1.8-2.4The physical properties of magnetic activated carbon vary with the types dosage and magnetizing condition of magneticreagent.
文摘Aim To study the interaction of puerarin (PU) with phospholipid (PL) in soliddispersion. Methods PU/PL solid dispersion was prepared with solvent evaporation and theinteraction between PU and PL was studied by analysis of their ultraviolet spectra, infraredspectra, ~1H NMR spectra and thin layer chromatogram. Results In chloroform the maximum absorptionpeak of PU in PU/PL mixture was located at 243 nm, but 251 nm for that of PU in solid dispersion.However in methanol, QU in mixture or solid dispersion had the same maximum absorption peak locationin ultraviolet spectra. Compared with the infrared spectra of mixture, that of solid dispersionshowed the specific absorption peak location of benzene ring framework in PU molecule was markedlychanged, the stretching vibration peak of P= O in PL molecule was shifted to high wavenumbers andthe stretching vibration peak of C = C in PL molecule was disappeared. In ~1H NMR spectra, most ofthe signals from PU in solid dispersion were weaken markedly or disappeared and the signals from thepolar part of PL molecule were significantly changed. PU and PL in solid dispersion could beseparated on silica gel plate with the mixed solvent of chloroform, methanol and water (65:25:5) orethyl acetate and methanol (10:1) . Conclusion In solid dispersion the benzene ring framework of PUmolecule could act with the polar part and unsaturated part of PL molecule through charges transfer,and the interacted part could be surrounded by fat chains of PL molecule.
