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Towards superhydrophobic coatings made by non-fluorinated polymers sprayed from a supercritical solution

Ovaskainen, Louise ; Rodriguez Meizoso, Irene LU ; Birkin, Natasha A. ; Howdle, Steven M. ; Gedde, Ulf ; Wagberg, Lars and Turner, Charlotta LU orcid (2013) In Journal of Supercritical Fluids 77. p.134-141
Abstract
The objective of this study was to create a superhydrophobic surface using polymers that are non-fluorinated and applying them to a surface via rapid expansion of a supercritical solution (RESS). Solubility studies of poly(epsilon-caprolactone) (PCL) and a statistical copolymer of vinyl acetate and vinyl pivalate (P(VAc-VPi))in supercritical carbon dioxide (scCO(2)) were carried out using an extraction procedure. It was found that the most suitable process parameters for spraying these polymers using the RESS technique were 30 MPa, 40 degrees C and 10% (v/v) acetone as a co-solvent. The surfaces produced were characterized in terms of their morphology and hydrophobic properties by scanning electron microscopy and contact angle... (More)
The objective of this study was to create a superhydrophobic surface using polymers that are non-fluorinated and applying them to a surface via rapid expansion of a supercritical solution (RESS). Solubility studies of poly(epsilon-caprolactone) (PCL) and a statistical copolymer of vinyl acetate and vinyl pivalate (P(VAc-VPi))in supercritical carbon dioxide (scCO(2)) were carried out using an extraction procedure. It was found that the most suitable process parameters for spraying these polymers using the RESS technique were 30 MPa, 40 degrees C and 10% (v/v) acetone as a co-solvent. The surfaces produced were characterized in terms of their morphology and hydrophobic properties by scanning electron microscopy and contact angle measurements, respectively. The most hydrophobic surfaces were obtained by spraying the P(VAc-VPi) copolymers, giving advancing water contact angles in the range of 120-155 degrees due to the hydrophobic character of the polymer and the microstructure formed with the RESS technique. These results show great promise for the creation of superhydrophobic surfaces using non-fluorinated polymers applied to surfaces via RESS technique. (C) 2013 Elsevier B.V. All rights reserved. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Supercritical carbon dioxide, Polymer, RESS, Surface coating
in
Journal of Supercritical Fluids
volume
77
pages
134 - 141
publisher
Elsevier
external identifiers
  • wos:000318830100017
  • scopus:84876102727
ISSN
0896-8446
DOI
10.1016/j.supflu.2013.02.019
language
English
LU publication?
yes
id
eaf648f2-822f-454b-b109-6cba0ce9bdd6 (old id 3932598)
date added to LUP
2016-04-01 10:04:42
date last changed
2024-05-06 02:32:10
@article{eaf648f2-822f-454b-b109-6cba0ce9bdd6,
  abstract     = {{The objective of this study was to create a superhydrophobic surface using polymers that are non-fluorinated and applying them to a surface via rapid expansion of a supercritical solution (RESS). Solubility studies of poly(epsilon-caprolactone) (PCL) and a statistical copolymer of vinyl acetate and vinyl pivalate (P(VAc-VPi))in supercritical carbon dioxide (scCO(2)) were carried out using an extraction procedure. It was found that the most suitable process parameters for spraying these polymers using the RESS technique were 30 MPa, 40 degrees C and 10% (v/v) acetone as a co-solvent. The surfaces produced were characterized in terms of their morphology and hydrophobic properties by scanning electron microscopy and contact angle measurements, respectively. The most hydrophobic surfaces were obtained by spraying the P(VAc-VPi) copolymers, giving advancing water contact angles in the range of 120-155 degrees due to the hydrophobic character of the polymer and the microstructure formed with the RESS technique. These results show great promise for the creation of superhydrophobic surfaces using non-fluorinated polymers applied to surfaces via RESS technique. (C) 2013 Elsevier B.V. All rights reserved.}},
  author       = {{Ovaskainen, Louise and Rodriguez Meizoso, Irene and Birkin, Natasha A. and Howdle, Steven M. and Gedde, Ulf and Wagberg, Lars and Turner, Charlotta}},
  issn         = {{0896-8446}},
  keywords     = {{Supercritical carbon dioxide; Polymer; RESS; Surface coating}},
  language     = {{eng}},
  pages        = {{134--141}},
  publisher    = {{Elsevier}},
  series       = {{Journal of Supercritical Fluids}},
  title        = {{Towards superhydrophobic coatings made by non-fluorinated polymers sprayed from a supercritical solution}},
  url          = {{http://dx.doi.org/10.1016/j.supflu.2013.02.019}},
  doi          = {{10.1016/j.supflu.2013.02.019}},
  volume       = {{77}},
  year         = {{2013}},
}