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Tuesday, July 21, 2020 | History

2 edition of Monomolecular films adsorbed at the solution-solid interface. found in the catalog.

Monomolecular films adsorbed at the solution-solid interface.

Frederick Mayhew Fowkes

Monomolecular films adsorbed at the solution-solid interface.

by Frederick Mayhew Fowkes

  • 97 Want to read
  • 17 Currently reading

Published in Chicago .
Written in English

    Subjects:
  • Adsorption.,
  • Capillarity.

  • Edition Notes

    Thesis--University of Chicago.

    Classifications
    LC ClassificationsQD547 .F59
    The Physical Object
    Paginationv, 32 l.
    Number of Pages32
    ID Numbers
    Open LibraryOL5233017M
    LC Control Number75303301

    A monomolecular film system that changes color to indicate the presence of an influenza virus has been developed by a group at the Lawrence Berkeley (CA) Laboratory (LBL) Center for Advanced Materials. Monomolecular film simplifies detection of influenza virus. When a solution of octadecylammonium chloride (CH 3 (CH 2) 17 NH 3 + Cl −: ODAH + Cl −) was spread at an interface between the air and an aqueous dispersion of the negatively charged nanosheets, the nanosheets were adsorbed onto the floating monomolecular film of ODAH + to form a hybrid film at the interface.

    Monomolecular films of poly [methyl(n‐alkyl)siloxanes] on organic liquids Adsorption of polymers at the solution‐solid interface. IV. Styrene‐methyl methacrylate copolymers on silica Abstract; PDF PDF References; Request permissions; Polymer adsorption studies at the solid/liquid interface using gel permeation chromatography. II. Orientation fluctuation of organic monomolecular layers at liquid/solid interfaces Article in Journal of Crystal Growth (1) July with 10 Reads How we measure 'reads'.

    Ciuchi F., Relini A., Ferrando R., Rolandi R. () Surface viscosity of monomolecular films at the air-water interface. In: Laggner P., Glatter O. (eds) Trends in Colloid and Interface Science VII. Progress in Colloid & Polymer Science, vol Purchase Reactions at the Liquid-Solid Interface, Volume 28 - 1st Edition. Print Book & E-Book. ISBN ,


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Monomolecular films adsorbed at the solution-solid interface by Frederick Mayhew Fowkes Download PDF EPUB FB2

Monomolecular film properties of cellulose and amylose triacetates at the air-water interface. Journal of Polymer Science Part C: Polymer Symposia36 (1), DOI: /polc D.A Cadenhead, R.J Demchak. Monomolecular films of cyclopentadecanone and their condensation with cholesterol.

In such LB films, pyroelectricity and piezoelectricity can be observed. Due to the small thickness of the multilayers, the pyroelectric response is very fast. Therefore pyroelectric detectors for thermal radiation have been proposed which may be used, for example, in fast infrared TV cameras.

The liquid condensed and liquid expanded physical states in an insoluble monomolecular film at the air-water interface and the gel and liquid crystelline states in fully hydrated bilayers are discussed and compared. It is postulated that, under reasonable restraints, the monolayer may be regarded as an adequate model membrane by: 2.

Quantitative examination of the surface properties of monomolecular films of the isolated microbubble surfactant complex (or glycopeptide–lipid–oligosaccharide complex), at an air/water interface, was carried out using a Langmuir trough apparatus.

Stabilized microbubbles are apparently formed from shrinkage of surfactant-coated macroscopic bubbles, and various data indicate that most of the carbohydrate material is selectively desorbed from the microbubble surfactant monolayer. It is proposed that such a -y vs. T break involves melting of a monomolecular layer adsorbed at the interface.

The large change in slope at the break can be interpreted from the equation (OH/OA)p.T = 7- T(OT/OT)I~,~ with the change in (OH/OA) at the break corresponding approximately to the heat of fusion of a by: Interface Sei.(66) Marra, J.; Israelachvili, J.

Biochemistry24, Marra, J. 18, Monomolecular Layers and Thin Films of Silane Coupling Agents by Vapor-Phase Adsorption on Oxidized Aluminum For vapor adsorbed films a packing density of molecules/nm2 was found.

The data. An investigation into the energy per unit area of interface formed between monomolecular layers of fatty acids adsorbed on a mica surface and polar and nonpolar liquids is described. The results are compared with values predicted from Young's relation, γ sl = γ sv − γ lv cos θ, where the γ' s represent interfacial energies between solid, liquid, and vapor phases, and θ is the.

DNA adsorption on solid or liquid surfaces is a topic of broad fundamental and applied interest. Here, we study by X-ray reflectivity the adsorption of monodisperse double-stranded DNA molecules on a positively charged surface, obtained through chemical grafting of a homogeneous organic monomolecular layer of N-(2-aminoethyl) dodecanamide on an oxide-free monocrystalline Si().

Phase transitions in the monomolecular film of N-octadecanol on silica gel surface. Journal of Colloid and Interface Science91 (2), DOI: /(83) XPS is an appropriate analytical method for chemical analysis of thin (less than 10 nm) films adsorbed on a surface and the configuration of the molecules and chemical bindings to the substrate.

It is thus apparent that the surface temperature of a layer of water will be dependent upon many environmental factors and can be influenced in several ways by the addition of a monomolecular film to the interface. INTRODUCTION The adsorption of a monomolecular film can significantly change the temperature of a free water surface.

Surface interaction controlled microphase separation leading to the formation of a chemically heterogeneous surface nanopatterns in dry ultrathin films of A−B diblock copolymers is studied theoretically in the strong segregation limit.

On a planar surface one of the blocks (A block) is strongly adsorbed, forming a tightly bound monomolecular layer (two-dimensional melt). aggregation takes place. At the CMC, the interface is at (near) maximum coverage and to minimise further free energy, molecules begin to aggregate in the bulk phase.

Above the CMC, the system then consists of an adsorbed monomolecular layer, free monomers and micellised surfactant in the bulk, with all these three states in equilibrium. States of Monomolecular Films A.

Gaseous Films B. Gas-Liquid Transitions C. Condensed Phases D. The Solid State E. Monolayer Collapse F. Domain Shapes and Interactions 5. Mixed Films 6. Evaporation Rates through Monomolecular Films 7.

Dissolution of Monolayers 8. Reactions in Monomolecular Films Monomolecular Films, Metastable Surface Phases, Curved Surfaces, Capillary Rise, The Vapor Pressure of Curved Surfaces, The Contact Angle and Adhesion, Nucleation, Thermodynamics of Adsorbed Monolayers, Heat of.

Frederick Mayhew Fowkes has written: 'Monomolecular films adsorbed at the solution-solid interface' -- subject(s): Adsorption, Capillarity Asked in Science Why is a. Hydrolysis of mixed monomolecular films of triglyceride/lecithin by pancreatic lipase Article (PDF Available) in Journal of Biological Chemistry (20) November with 25 Reads.

Several experimental evidences differentiating an insoluble monomolecular film just on the air/water interface from an adsorbed film of soluble amphiphile solution are presented in order to. adsorbed at the interface. * Problem arises: how to define the interface between α and β.

* Gibbs’ approach (Gibbs dividing surface): the interface was defined as a position that the surface excess of example substance (always the solvent) becomes zero.- (Fig a, 2b) z Surface excess concentration of i with respect to α substance, Γi.

Langmuir-Blodgett films are formed by the deposition of a Langmuir film onto a solid substrate. Langmuir films are composed of an organized monolayer of amphiphilic molecules at a liquid/gas interface. These molecules, by virtue of possessing a hydrophobic tail and a hydrophilic head, are spontaneously oriented at a liquid/gas interface.

Buckling of polymerized monomolecular films Article (PDF Available) in Physical Review Letters 72(10) April with 29 Reads How we measure 'reads'.The monomolecular film, resulting from the adsorption of the emulsifier at the interface of an oil and water, should be strong but pliable because it imparts maximum stability of the emulsion system.

Colloidal dispersions: an overview: the cosmetic scientist must consider various repellent and attractive forces involved in these systems.Films that form at surfaces or interfaces are of special importance. Such films may reduce friction, wear, or corrosion, or may stabilize emulsions, foams, and solid dispersions.

Thin films on water surfaces can reduce evaporation losses, though the spreading of thin films on such surfaces can represent a serious environmental problem.