Article (Scientific journals)
Mapping Aging Effects on Polymer Surfaces : Specific Detection of Additives by Chemical Force Microscopy
Duwez, Anne-Sophie; Nysten, Bernard
2001In Langmuir, 17, p. 8287-8292
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Keywords :
atomic force microscopy AFM; molecular recognition; surfaces
Abstract :
[en] We report in this contribution the successful application of chemical force microscopy to study aging of polymer surfaces at the submicroscopic scale. Adhesion force mapping using tips modified with methyland hydroxyl-terminated alkanethiols was used to probe the chemical composition of polypropylene surfaces as a function of aging time. We have measured adhesion force distributions on polypropylene melt-pressed films stabilized with antioxidants, process-stabilizing agents, and UV-light stabilizers. These adhesion force distributions were correlated with the additive distribution at the surface. We were able to evidence modifications of the local adhesion properties on the polymer surface due to material aging. These results support the conclusion that the UV-light stabilizer migrates toward the surface and forms a film that makes the surface less hydrophobic. Laterally resolved adhesion force maps show chemically heterogeneous surfaces on a sub-100 nm scale
Disciplines :
Chemistry
Author, co-author :
Duwez, Anne-Sophie  ;  Université catholique de Louvain. Present address: University of Liège
Nysten, Bernard;  Université catholique de Louvain
Language :
English
Title :
Mapping Aging Effects on Polymer Surfaces : Specific Detection of Additives by Chemical Force Microscopy
Publication date :
2001
Journal title :
Langmuir
ISSN :
0743-7463
eISSN :
1520-5827
Publisher :
American Chemical Society, Washington, United States - District of Columbia
Volume :
17
Pages :
8287-8292
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 30 May 2010

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