Kinetics and layer organization during the polymerization of coniferyl alcohol at the air-water interface

The initial stage of the polymerization of coniferyl alcohol catalyzed by a peroxydase was studied at the air-water interface. The properties of the monolayers were investigated at constant area and at constant surface pressure by surface pressure, surface potential and ellipticity measurements. On...

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Bibliographic Details
Published in:Colloid and polymer science 2004-03, Vol.282 (5), p.429-439
Main Authors: GROZEV, N, AGUIE-BEGHIN, V, CATHALA, B, DOUILLARD, R, PANAIOTOV, I
Format: Article
Language:English
Subjects:
Alcohol
Alcohols
Applied sciences
Chemical and Process Engineering
Engineering Sciences
Exact sciences and technology
Flow velocity
Food engineering
Life Sciences
Mathematical models
Organic polymers
Physicochemistry of polymers
Polymerization
Preparation, kinetics, thermodynamics, mechanism and catalysts
Reaction kinetics
Surface area
Surface chemistry
Surface pressure
Two dimensional
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Summary:The initial stage of the polymerization of coniferyl alcohol catalyzed by a peroxydase was studied at the air-water interface. The properties of the monolayers were investigated at constant area and at constant surface pressure by surface pressure, surface potential and ellipticity measurements. On the basis of the results obtained at constant surface area, it is proposed that the formation of a 2D layer occurs up to the inflection point of the surface pressure-area isotherm, and that for larger surface pressures a 3D structure is formed during the polymerization. If the barostat is set at the inflection point (the surface pressure is constant while the surface area increases), the 2D organization of the monolayer is retained. A kinetic model describing the adsorption of the reaction products in a 2D layer is proposed. The kinetic constants were determined from the surface potential, ellipsometry, surface pressure and surface area data.[PUBLICATION ABSTRACT]
ISSN:0303-402X
1435-1536
DOI:10.1007/s00396-003-0963-5