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  Water induced dewetting of ultrathin polystyrene films on hydrophilic surfaces

Bonaccurso, E., Butt, H.-J., Franz, V., Graf, K., Kappl, M., Loi, S., et al. (2002). Water induced dewetting of ultrathin polystyrene films on hydrophilic surfaces. Langmuir, 18(21), 8056-8061. doi:10.1021/la020429z.

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 Creators:
Bonaccurso, Elmar1, Author              
Butt, Hans-Jürgen1, Author              
Franz, V., Author
Graf, Karlheinz2, Author              
Kappl, Michael1, Author              
Loi, S., Author
Niesenhaus, B., Author
Chemnitz, S., Author
Böhm, M., Author
Petrova, B., Author
Jonas, Ulrich3, Author              
Spiess, Hans Wolfgang3, Author              
Affiliations:
1Institut für physikalische Chemie II, Universität Siegen, 57068 Siegen, Germany, ou_persistent22              
2Univ Siegen, D-27068 Siegen, Germany, ou_persistent22              
3MPI for Polymer Research, Max Planck Society, ou_1309545              

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 Abstract: The wetting of ultrathin films of polystyrene on the hydrophilic surfaces of mica and silicon oxide was studied by atomic force microscopy. After annealing, the surfaces were covered with a homogeneous, continuous polystyrene film of roughly 1 nm thickness. On top of this film, polystyrene droplets with microscopic contact angles of 7degrees-16degrees were observed. After exposure to an oversaturated water vapor, the continuous polystyrene film disintegrates and dewets the surfaces. Polystyrene structures on silicon oxide indicate a homogeneous dewetting process starting from few nucleation sites. On mica the density of nucleation sites for water is much higher and the polystyrene dewets the surface in an inhomogeneous process. The structural changes observed imply that ultrathin polystyrene films are highly mobile in the presence of water.

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Language(s): eng - English
 Dates: 2002-10-15
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000178589700045
DOI: 10.1021/la020429z
 Degree: -

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Title: Langmuir
  Abbreviation : Langmuir
Source Genre: Journal
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Publ. Info: Columbus, OH : American Chemical Society
Pages: - Volume / Issue: 18 (21) Sequence Number: - Start / End Page: 8056 - 8061 Identifier: ISSN: 0743-7463
CoNE: https://pure.mpg.de/cone/journals/resource/954925541194