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Surface equation of state for pulmonary surfactant monolayers at Air-Water interface: Protein-lipid binary mixture monolayers

Authors :
Zuoxiang Zeng
Xuechao Gao
Juan Zhang
Wei-Lan Xue
Source :
The Canadian Journal of Chemical Engineering. 88:1107-1113
Publication Year :
2010
Publisher :
Wiley, 2010.

Abstract

The available surface equation of state for pure pulmonary surfactant monolayers is generalised to binary mixture monolayers by introducing a group of parameters, βi(i = 1–4) in the form of to express the influence of the components in new mixing rules and a new factor, I, is defined to represent the interaction intensity between two different components. The π − A isotherms getting by the surface equations of state agree with the experimental data for protein–lipid binary monolayers, and the average deviation is about 11.41%. The result shows the order of the interaction intensity between protein and lipid is SP-C/DPPG > SP-B/DPPG > SP-C/DPPC > SP-B/DPPC. L'equation d'etat de la surface disponible pour les monocouches de surfactant pulmonaire pures est generalisee en monocouches de melange binaire en introduisant un groupe de parametres, βi(i = 1–4) dans une forme qui permet d'exprimer l'influence des composantes dans de nouvelles regles de melange et un nouveau facteur, I , est defini pour representer l'intensite de l'interaction entre deux composantes differentes. Les isothermes π − A des equations d'etat de la surface concordent avec les donnees experimentales pour les monocouches binaires proteines-lipides et la deviation moyenne est d'environ 11,41%. Le resultat demontre que l'ordre de l'intensite de l'interaction entre les proteines et les lipides est SP-C/DPPG > SP-B/DPPG > SP-C/DPPC > SP-B/DPPC. Can. J. Chem. Eng. © 2010 Canadian Society for Chemical Engineering

Details

ISSN :
00084034
Volume :
88
Database :
OpenAIRE
Journal :
The Canadian Journal of Chemical Engineering
Accession number :
edsair.doi...........61749bc4f7c08b2ac1059adaedc1c8d4