2-D property of the binary mixture of a lipid and a lipid-polymer at an air/water interface = 공기/물 계면에서 인지질과 인지질-고분자 혼합계의 2차원 특성 연구

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The surface pressure(Π) and surface area/molecule(A) isotherms of DMPC & PEG-DMPE system were measured at various compositions to study the 2-dimensional interfacial properties of the binary mixture of a lipid and a lipid-polymer system at an air/water interface by using the Langmuir surface balance technique. The finite surface pressure was observed in the range of a surface area that is much larger than the cross section of lipid molecules, and the isotherm in this concentration regime strongly depended on the composition. All the isotherms in this region become identical if the surface area is rescaled in terms of the surface area per PEG-molecule. The isotherm agrees with the two dimensional scaling law in a good solvent, and it is very similar to that of the PEG adsorbed monolayer. Furthermore the mixing Gibbs free energy was evaluated at various compositions from the integration of the Π-A isotherm. The results indicate that the system is miscible in all composition and there exists very strong attractive interaction between them.
Advisors
Kim, Mahn-Wonresearcher김만원researcher
Description
한국과학기술원 : 물리학과,
Publisher
한국과학기술원
Issue Date
1999
Identifier
151548/325007 / 000973167
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 물리학과, 1999, [ v, 59 p. ]

Keywords

DMPC; PEG-DMPE; Mixture; 단층막; 혼합계; 인지질; Isotherm; Monolayer

URI
http://hdl.handle.net/10203/48486
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=151548&flag=dissertation
Appears in Collection
PH-Theses_Master(석사논문)
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