Mesoscopic patterning in thin polymer films formed under the fast dip-coating process

Edward Bormashenko, Roman Pogreb, Oleg Stanevsky, Yelena Bormashenko, Tamir Stein, Vladimir Zeev Gaisin, Ron Cohen, Oleg V. Gendelman

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

Mesoscopically ordered self-assembled polystyrene, polycarbonate and poly(methyl methacrylate) films were obtained when polymer solutions were deposited on vertical plates and dried with hot air. It was shown that characteristic size (≈50 μm) of the mesoscopic cell is practically insensitive to the polymer or substrate kind, while the thickness of the substrate plays a decisive role in the mesoscopic patterning. Junction angles of 120 and 90° were observed. Marangoni instability plays an important role in the cell's structure formation. A semi-quantitative model explaining the phenomenon of mesoscopic cell formation is proposed.

Original languageEnglish
Pages (from-to)114-121
Number of pages8
JournalMacromolecular Materials and Engineering
Volume290
Issue number2
DOIs
StatePublished - 23 Feb 2005

Keywords

  • Dip-coating
  • Instability
  • Mesoscopic
  • Self-organization
  • Surfaces

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