Superhydrophobic polymeric coatings produced by rapid expansion of supercritical solutions combined with electrostatic deposition (RESS-ED)
(2014) In Journal of Supercritical Fluids 95. p.610-617- Abstract
- In this paper we present a method to produce superhydrophobic polymeric coatings by combining the rapid expansion of supercritical solutions (RESS) with electrostatic deposition (ED). A copolymer, poly(vinyl acetate)-poly(vinyl pivalate) was dissolved in a mixture of supercritical carbon dioxide and acetone and sprayed through a nozzle with an applied voltage of 8 kV onto a surface placed on a earthed collector. Spray distance and polymer concentration were altered to find the most suitable spraying conditions. Superhydrophobic surfaces were produced when spraying both with and without a voltage, although the water repellent surfaces could be produced at a larger variety of processing parameters using the RESS-ED technique. The greatest... (More)
- In this paper we present a method to produce superhydrophobic polymeric coatings by combining the rapid expansion of supercritical solutions (RESS) with electrostatic deposition (ED). A copolymer, poly(vinyl acetate)-poly(vinyl pivalate) was dissolved in a mixture of supercritical carbon dioxide and acetone and sprayed through a nozzle with an applied voltage of 8 kV onto a surface placed on a earthed collector. Spray distance and polymer concentration were altered to find the most suitable spraying conditions. Superhydrophobic surfaces were produced when spraying both with and without a voltage, although the water repellent surfaces could be produced at a larger variety of processing parameters using the RESS-ED technique. The greatest improvement of using the RESS-ED process was that larger and thinner coatings were produced with a more even surface coverage of the created polymer particles compared to spraying without the applied voltage. (C) 2014 The Authors. Published by Elsevier B.V. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5084889
- author
- Ovaskainen, Louise ; Chigome, Samuel ; Birkin, Natasha A. ; Howdle, Steven M. ; Torto, Nelson ; Wagberg, Lars and Turner, Charlotta LU
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Superhydrophobic coating, RESS, Electrostatic deposition, Poly(vinyl, acetate)-poly(vinyl pivalate), Supercritical solution
- in
- Journal of Supercritical Fluids
- volume
- 95
- pages
- 610 - 617
- publisher
- Elsevier
- external identifiers
-
- wos:000347360800072
- scopus:84916638240
- ISSN
- 0896-8446
- DOI
- 10.1016/j.supflu.2014.09.014
- language
- English
- LU publication?
- yes
- id
- 1ff6f35c-7a30-49b2-9df2-0a4cc3c4c34a (old id 5084889)
- date added to LUP
- 2016-04-01 11:02:34
- date last changed
- 2024-01-22 04:57:13
@article{1ff6f35c-7a30-49b2-9df2-0a4cc3c4c34a, abstract = {{In this paper we present a method to produce superhydrophobic polymeric coatings by combining the rapid expansion of supercritical solutions (RESS) with electrostatic deposition (ED). A copolymer, poly(vinyl acetate)-poly(vinyl pivalate) was dissolved in a mixture of supercritical carbon dioxide and acetone and sprayed through a nozzle with an applied voltage of 8 kV onto a surface placed on a earthed collector. Spray distance and polymer concentration were altered to find the most suitable spraying conditions. Superhydrophobic surfaces were produced when spraying both with and without a voltage, although the water repellent surfaces could be produced at a larger variety of processing parameters using the RESS-ED technique. The greatest improvement of using the RESS-ED process was that larger and thinner coatings were produced with a more even surface coverage of the created polymer particles compared to spraying without the applied voltage. (C) 2014 The Authors. Published by Elsevier B.V.}}, author = {{Ovaskainen, Louise and Chigome, Samuel and Birkin, Natasha A. and Howdle, Steven M. and Torto, Nelson and Wagberg, Lars and Turner, Charlotta}}, issn = {{0896-8446}}, keywords = {{Superhydrophobic coating; RESS; Electrostatic deposition; Poly(vinyl; acetate)-poly(vinyl pivalate); Supercritical solution}}, language = {{eng}}, pages = {{610--617}}, publisher = {{Elsevier}}, series = {{Journal of Supercritical Fluids}}, title = {{Superhydrophobic polymeric coatings produced by rapid expansion of supercritical solutions combined with electrostatic deposition (RESS-ED)}}, url = {{http://dx.doi.org/10.1016/j.supflu.2014.09.014}}, doi = {{10.1016/j.supflu.2014.09.014}}, volume = {{95}}, year = {{2014}}, }