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Citation: Mo Feng-Kui, Zhu Zhi-Fang. Affect of Subphase pH on the Behavior of the Monolayers at the Air/Water Interface for Vitamin E and Dipalmitoylphosphatidylcholine[J]. Acta Physico-Chimica Sinica, ;1997, 13(05): 389-394. doi: 10.3866/PKU.WHXB19970502 shu

Affect of Subphase pH on the Behavior of the Monolayers at the Air/Water Interface for Vitamin E and Dipalmitoylphosphatidylcholine

1.
Department of Basic Courses,Shenyang Pharmaceutical University,Shenyang 110015

Received Date: 7 July 1996
Available Online: 15 May 1997

The affect of subphase pH on the monolayers at air/water interphase for vitamin E and dipalmitoylphosphatidylcholine was investigated by determining the surface pressure-area isothermis. Decrease in subphase pH didn't change the collapse pressure of monolayer for DPPC,but led to obvious increase in that for VE, it also didn't change the area per molecule of monolayer for VE, but caused DPPC monolayer to be condensed. At lower surface pressure, the action of VE to the expansion of DPPC monolayer was small on pure water, but large on the subphase of pH=1. It suggests that interactions between the polar head groups may play an important role in the behavior of the VE/DPPC monolayers on the subphase of lower pH.
- Vitamin E,
- Diphlmitoylphosphatidylcholine,
- Monolayer,
- pH of subphase
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