Scanning probe microscopy of heterogeneous polymers

Adhesion, elastic and viscoelastic properties are characteristic parameters of materials. These mechanical properties of polymers show a strong dependence on the manufacturing process, the molecular weight, the temperature and the environment. It would be desirable to have tools for characterization...

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Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 1999-08, Vol.154 (1), p.65-73
Main Authors: Marti, Othmar, Stifter, Thomas, Waschipky, Hanka, Quintus, Martin, Hild, Sabine
Format: Article
Language:English
Subjects:
Heterogeneous polymers
Pulsed force mode
Scanning probe microscopy
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Summary:Adhesion, elastic and viscoelastic properties are characteristic parameters of materials. These mechanical properties of polymers show a strong dependence on the manufacturing process, the molecular weight, the temperature and the environment. It would be desirable to have tools for characterization of small samples. The scanning force microscope seems to be an ideal instrument when working towards this goal. The nanometer sized probe in contact with the sample surface can be used to measure a variety of surface properties, ranging from friction to adhesion. The measurements could be truly quantitative if one knew exactly the shape of the tip and the strength and distance dependence of the interaction forces. It is shown in this paper how the measurement modes of a scanning force microscope can be tailored to obtain quantitative data. We discuss the advantages and disadvantages of the pulsed force mode investigations using homogeneous and heterogeneous polymer samples as test objects.
ISSN:0927-7757
1873-4359
DOI:10.1016/S0927-7757(98)00909-1