Salt effect study of a lipid-polymer monolayer at an Air/Water interface = 공기/물 계면에서인지질-고분자의 단층막에 대한 염의 효과 연구

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The ionic charge dependence of a lipid-polymer has been studied at an air/aqueous solution interface. The surface pressure and surface area/molecule isotherms of DMPE-PEG5000 system were measured on the aqueous solution containing KCl, NaCl, or CaCl2 with a several different salt concentration by using the Langmuir Surface Balance technique. The two dimensional equation of states of a lipid-polymer was also calculated theoretically to compare the experimental results on the electrolyte subphase. We found that the isotherms on the electrolyte solutions vary relatively small in comparison with an isotherm on the water, which is the inside of the experimental error of the instrument. Therefore, we conclude that the salt effects are very small, which is reasonable based on the osmotic pressure of high molecular weight PEG moiety. We recommend the construction of a high precision surface balance if the investigation of the small salt effects at a DMPE-PEG monolayer on the electrolyte solution is needed.
Advisors
Kim, Mahn-Wonresearcher김만원researcher
Description
한국과학기술원 : 물리학과,
Publisher
한국과학기술원
Issue Date
2000
Identifier
158075/325007 / 000983275
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 물리학과, 2000.2, [ vii, 52 p. ]

Keywords

Electrostactic interaction; 단층막; 인지질-고분자; 스케일링 개념; 정전기적 상호작용; Scaling concept; Salt effect; Lipid-polymer; Monolayer; 염의 효과

URI
http://hdl.handle.net/10203/48527
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=158075&flag=dissertation
Appears in Collection
PH-Theses_Master(석사논문)
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