Superhydrophobic fluorinated polyurethane films

Research output: Contribution to journalArticleAcademicpeer-review

16 Citations (Scopus)
5 Downloads (Pure)

Abstract

A superhydrophobic polyurethane-based film is described, on which the water advancing and receding contact angles are 150° and 82°, respectively. The film was prepared from surface-fluorinated polyurethane (PU), obtained from a well-defined fluorinated isocyanate, with silica particles incorporated within the film. In the absence of the silica particles, smooth fluorinated PU films with about 2 wt% fluorine demonstrate water advancing and receding contact angles of 110° and 63°, respectively. A major cause for the large contact angle hysteresis, similar to the so-called 'sticky' superhydrophobic behaviour, on the roughened PU films is believed to originate from the surface reorganization of the fluorinated PU upon contact with water, which is characteristic for the partially fluorinated PU film. When a similar poly(dimethylsiloxane) (PDMS)-based roughened film was made, the water contact angly hysteresis could be reduced significantly, since the long PDMS chain can effectively suppress the surface reorganization upon contact with water.
Original languageEnglish
Pages (from-to)1869-1881
JournalJournal of Adhesion Science and Technology
Volume22
Issue number15
DOIs
Publication statusPublished - 2008

Fingerprint

Polyurethanes
Water
Contact angle
water
Polydimethylsiloxane
Silicon Dioxide
Hysteresis
hysteresis
Silica
silicon dioxide
Isocyanates
isocyanates
Fluorine
fluorine
causes

Cite this

@article{9b474a23b9554b22ad018f72a572cedf,
title = "Superhydrophobic fluorinated polyurethane films",
abstract = "A superhydrophobic polyurethane-based film is described, on which the water advancing and receding contact angles are 150° and 82°, respectively. The film was prepared from surface-fluorinated polyurethane (PU), obtained from a well-defined fluorinated isocyanate, with silica particles incorporated within the film. In the absence of the silica particles, smooth fluorinated PU films with about 2 wt{\%} fluorine demonstrate water advancing and receding contact angles of 110° and 63°, respectively. A major cause for the large contact angle hysteresis, similar to the so-called 'sticky' superhydrophobic behaviour, on the roughened PU films is believed to originate from the surface reorganization of the fluorinated PU upon contact with water, which is characteristic for the partially fluorinated PU film. When a similar poly(dimethylsiloxane) (PDMS)-based roughened film was made, the water contact angly hysteresis could be reduced significantly, since the long PDMS chain can effectively suppress the surface reorganization upon contact with water.",
author = "D. Wu and W. Ming and {Benthem, van}, R.A.T.M. and {With, de}, G.",
year = "2008",
doi = "10.1163/156856108X320023",
language = "English",
volume = "22",
pages = "1869--1881",
journal = "Journal of Adhesion Science and Technology",
issn = "0169-4243",
publisher = "Taylor and Francis Ltd.",
number = "15",

}

Superhydrophobic fluorinated polyurethane films. / Wu, D.; Ming, W.; Benthem, van, R.A.T.M.; With, de, G.

In: Journal of Adhesion Science and Technology, Vol. 22, No. 15, 2008, p. 1869-1881.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Superhydrophobic fluorinated polyurethane films

AU - Wu, D.

AU - Ming, W.

AU - Benthem, van, R.A.T.M.

AU - With, de, G.

PY - 2008

Y1 - 2008

N2 - A superhydrophobic polyurethane-based film is described, on which the water advancing and receding contact angles are 150° and 82°, respectively. The film was prepared from surface-fluorinated polyurethane (PU), obtained from a well-defined fluorinated isocyanate, with silica particles incorporated within the film. In the absence of the silica particles, smooth fluorinated PU films with about 2 wt% fluorine demonstrate water advancing and receding contact angles of 110° and 63°, respectively. A major cause for the large contact angle hysteresis, similar to the so-called 'sticky' superhydrophobic behaviour, on the roughened PU films is believed to originate from the surface reorganization of the fluorinated PU upon contact with water, which is characteristic for the partially fluorinated PU film. When a similar poly(dimethylsiloxane) (PDMS)-based roughened film was made, the water contact angly hysteresis could be reduced significantly, since the long PDMS chain can effectively suppress the surface reorganization upon contact with water.

AB - A superhydrophobic polyurethane-based film is described, on which the water advancing and receding contact angles are 150° and 82°, respectively. The film was prepared from surface-fluorinated polyurethane (PU), obtained from a well-defined fluorinated isocyanate, with silica particles incorporated within the film. In the absence of the silica particles, smooth fluorinated PU films with about 2 wt% fluorine demonstrate water advancing and receding contact angles of 110° and 63°, respectively. A major cause for the large contact angle hysteresis, similar to the so-called 'sticky' superhydrophobic behaviour, on the roughened PU films is believed to originate from the surface reorganization of the fluorinated PU upon contact with water, which is characteristic for the partially fluorinated PU film. When a similar poly(dimethylsiloxane) (PDMS)-based roughened film was made, the water contact angly hysteresis could be reduced significantly, since the long PDMS chain can effectively suppress the surface reorganization upon contact with water.

U2 - 10.1163/156856108X320023

DO - 10.1163/156856108X320023

M3 - Article

VL - 22

SP - 1869

EP - 1881

JO - Journal of Adhesion Science and Technology

JF - Journal of Adhesion Science and Technology

SN - 0169-4243

IS - 15

ER -