SIGNIFICANCE OF VOLTA AND COMPENSATION STATES AND THE MEASUREMENT OF SURFACE POTENTIALS OF MONOLAYERS.

B. A. Pethica; M. M. Standish; J. Mingins; C. Smart; D. H. Iles; M. E. Feinstein; S. A. Hossain; J. B. Pethica

SIGNIFICANCE OF VOLTA AND COMPENSATION STATES AND THE MEASUREMENT OF SURFACE POTENTIALS OF MONOLAYERS.

B. A. Pethica, M. M. Standish, J. Mingins, C. Smart, D. H. Iles, M. E. Feinstein, S. A. Hossain, J. B. Pethica

Chemical & Biological Engineering

Research output: Contribution to conference › Paper › peer-review

6 Scopus citations

Abstract

The thermodynamic analysis of the Volta effect by Koenig was studied for insoluble monolayers at air/water interfaces. Capacity measurements with a frequency bridge and with vibrating plate electrodes were used to test the basic assumptions of Koenig. The compensation effect was studied, and the conditions to verify the compensation method for measuring changes in //X potential were established for different types of spread monolayers. The field effect we reported for zwitterionic molecules is shown now to be an artefact produced by changes in the contact angle at the edge of the working interface at high monolayer pressures, with consequent changes in the geometry of the interfacial condenser. Within experimental limits, Kelvin's assumption that the Volta and compensation potentials are equal and opposite is correct for the systems studied.

Original language	English (US)
Pages	123-113
Number of pages	11
State	Published - 1974
Event	for mem Symp to N. K. Adam, Monolayers, 168th Meet of Am Chem Soc - Atlantic City, NJ Duration: Sep 11 1974 → Sep 13 1974

Conference

Conference	for mem Symp to N. K. Adam, Monolayers, 168th Meet of Am Chem Soc
City	Atlantic City, NJ
Period	9/11/74 → 9/13/74

All Science Journal Classification (ASJC) codes

General Chemistry

Cite this

@conference{9f4eed9039d64d3180e781be601ebfd2,

title = "SIGNIFICANCE OF VOLTA AND COMPENSATION STATES AND THE MEASUREMENT OF SURFACE POTENTIALS OF MONOLAYERS.",

abstract = "The thermodynamic analysis of the Volta effect by Koenig was studied for insoluble monolayers at air/water interfaces. Capacity measurements with a frequency bridge and with vibrating plate electrodes were used to test the basic assumptions of Koenig. The compensation effect was studied, and the conditions to verify the compensation method for measuring changes in //X potential were established for different types of spread monolayers. The field effect we reported for zwitterionic molecules is shown now to be an artefact produced by changes in the contact angle at the edge of the working interface at high monolayer pressures, with consequent changes in the geometry of the interfacial condenser. Within experimental limits, Kelvin's assumption that the Volta and compensation potentials are equal and opposite is correct for the systems studied.",

author = "Pethica, {B. A.} and Standish, {M. M.} and J. Mingins and C. Smart and Iles, {D. H.} and Feinstein, {M. E.} and Hossain, {S. A.} and Pethica, {J. B.}",

year = "1974",

language = "English (US)",

pages = "123--113",

note = "for mem Symp to N. K. Adam, Monolayers, 168th Meet of Am Chem Soc ; Conference date: 11-09-1974 Through 13-09-1974",

}

TY - CONF

T1 - SIGNIFICANCE OF VOLTA AND COMPENSATION STATES AND THE MEASUREMENT OF SURFACE POTENTIALS OF MONOLAYERS.

AU - Pethica, B. A.

AU - Standish, M. M.

AU - Mingins, J.

AU - Smart, C.

AU - Iles, D. H.

AU - Feinstein, M. E.

AU - Hossain, S. A.

AU - Pethica, J. B.

PY - 1974

Y1 - 1974

N2 - The thermodynamic analysis of the Volta effect by Koenig was studied for insoluble monolayers at air/water interfaces. Capacity measurements with a frequency bridge and with vibrating plate electrodes were used to test the basic assumptions of Koenig. The compensation effect was studied, and the conditions to verify the compensation method for measuring changes in //X potential were established for different types of spread monolayers. The field effect we reported for zwitterionic molecules is shown now to be an artefact produced by changes in the contact angle at the edge of the working interface at high monolayer pressures, with consequent changes in the geometry of the interfacial condenser. Within experimental limits, Kelvin's assumption that the Volta and compensation potentials are equal and opposite is correct for the systems studied.

AB - The thermodynamic analysis of the Volta effect by Koenig was studied for insoluble monolayers at air/water interfaces. Capacity measurements with a frequency bridge and with vibrating plate electrodes were used to test the basic assumptions of Koenig. The compensation effect was studied, and the conditions to verify the compensation method for measuring changes in //X potential were established for different types of spread monolayers. The field effect we reported for zwitterionic molecules is shown now to be an artefact produced by changes in the contact angle at the edge of the working interface at high monolayer pressures, with consequent changes in the geometry of the interfacial condenser. Within experimental limits, Kelvin's assumption that the Volta and compensation potentials are equal and opposite is correct for the systems studied.

UR - http://www.scopus.com/inward/record.url?scp=0016141854&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0016141854&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:0016141854

SP - 123

EP - 113

T2 - for mem Symp to N. K. Adam, Monolayers, 168th Meet of Am Chem Soc

Y2 - 11 September 1974 through 13 September 1974

ER -

SIGNIFICANCE OF VOLTA AND COMPENSATION STATES AND THE MEASUREMENT OF SURFACE POTENTIALS OF MONOLAYERS.

Abstract

Conference

All Science Journal Classification (ASJC) codes

Other files and links

Fingerprint

Cite this