Displacement current across a monomolecular layer at the air/water interface

Cirák, J.; Barančok, D.; Tomčı́k, Peter; Vajda, J.

doi:10.1016/s0928-4931(99)00081-8

Cited by 8 publications

(13 citation statements)

References 6 publications

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“…1 shows the basic components of the experimental setup. More details about the experimental device (NIMA Technology, UK) are described in [6]. Compression of the monolayer by means of a movable barrier results in a change of surface concentration of the molecules as well as in a change in the orientation of the direction of the molecular electric dipoles.…”

Section: Methodsmentioning

confidence: 99%

“…A partial modification of Iwamoto's MDC apparatus appeared in [4] and was tested by measuring stearic acid (SA) and diacetyl (DA). The further introduction of regularly interrupted non-continuous compression, [5]- [6] allowed following the relaxation processes during which the system of molecules reaches an equilibrium state after stopping the barrier. The step compression experiment enables the dielectric relaxation to be investigated and the phenomenological relaxation time constant can be estimated [7].…”

Section: Introductionmentioning

confidence: 99%

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Study of relaxation processes in monomolecular films by the step compression experiment

et al. 2005

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study of relaxation processes in monomolecular films by the step compression experiment

et al. 2005

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“…For detection of changes in charge states of the molecules as well as the relation with structural and conformational changes, a contactless method was developed based on an analysis of Maxwell's displacement currents (MDC). This method was originally introduced by Iwamoto et al [1,2] and improved by other authors [4][5][6][7]. Proposal of MDC experiment application for biological membrane phantom measurement was presented for the first time in our previous work [16].…”

Section: Methodsmentioning

confidence: 99%

Influence of alcohol on mechanical and electrical properties of thin organic films

Kopáni

Weis

2007

Open Physics

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Stability of organic materials properties is essential for further applications and was intensely investigated in last few decades. The aim of this study is to detect the structural changes of dipalmitoyl-phosphatidylcholine (DPPC) monolayer as a model system of organic material under influence of alcohols solutions. As subphases of monolayers (Langmuir films), pure water, ethanol and methanol solutions were used. For detection of changes in charge states of the molecules as well as relation with structural and conformational changes, a contactless method employing Maxwell's displacement currents (MDC) was used. In DPPC monolayer on the subphase of methanol-water, a gradual absorption of methanol molecules into the layer can appear. In DPPC monolayer on the subphase of ethanol-water adsorption of ethanol molecules on the layer can be observed. Influence of alcohols results in a significant change of mechanical and electrical properties as well as in the stability of thin films.

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“…The mixtures of C 16 OH, C 4 OH and epoxy resin with different molar ratio were added into a three-necked flask with thorough stirring. After the organic alkalitertiary amine was added, the mixtures were heated up to 100°C and regurgitated at this temperature for 24 min.…”

Section: Synthesis Of Fatty Alcohol-epoxy Resin-based Monolayers (Er mentioning

confidence: 99%

“…The monolayer materials reported frequently in previous works were mainly straight-chain fatty alcohol (C 16 -C 22 alcohol) and straight-chain fatty acid (C 17 -C 20 acid). [6][7][8] Although these materials could form condensed monolayers on the gas/liquid interface to restrain water evaporation effectively, their spread ability, weather resistance and stability still need improving.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a type of water evaporation inhibiting monolayer based on epoxy resin

Yang

Zhang

2015

Asia-Pacific J Chem Eng

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In this paper, a type of water evaporation inhibiting monolayer was synthesized through the reaction of hydrogenated bisphenol A epoxy resin with hexadecanol and butanol. These are termed epoxy resin-based monolayers (ER series). By means of π-t isotherms, γ-C isotherms, evaporation resistance and time, the spreading properties of ER series at gas/liquid interface and the capability of restraining water evaporation were studied systematically. The compactability and morphology of monolayer were characterized by Maxwell displacement current and atomic force microscopy. The results revealed that ER series could spread spontaneously at air/water interface to form a compact, condensed and stable monolayer. Comparing with hexadecanol, the monolayer presented a better performance of restraining water evaporation.

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Displacement current across a monomolecular layer at the air/water interface

Cited by 8 publications

References 6 publications

Study of relaxation processes in monomolecular films by the step compression experiment

Study of relaxation processes in monomolecular films by the step compression experiment

Influence of alcohol on mechanical and electrical properties of thin organic films

Preparation of a type of water evaporation inhibiting monolayer based on epoxy resin

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