2003
DOI: 10.1021/la0343573
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Reversible Tuning of Wetting Behavior of Polymer Surface with Responsive Polymer Brushes

Abstract: We develop the route to fabricate mixed brushlike layers on polyamide substrates (PA-6, PA-6I, PA-66) by the "grafting from" approach. The PA substrates were functionalized by NH3 plasma. The azo initiator of radical polymerization was covalently bound to the functionalized PA surface. A two-step grafting procedure was applied to graft polystyrene in the first step and poly(2-vinylpyridine) in the second step. We found remarkable differences between grafting on Si wafers and on the PA substrates. "Grafting fro… Show more

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Cited by 177 publications
(140 citation statements)
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“…[141,142] Poly(N-isopropylacrylamide) (PNIPAAm) is a typical example of a thermally responsive polymer that has a lower critical solution temperature (LCST) of about 32-33°C. [32] On a PNNIPAAm-modified flat substrate, the CA could be switched between hydrophobicity and hydrophilicity as the temperature passed through the LCST, which is the result of the competition between intra-and intermolecular hydrogen bonding (Fig.…”
Section: Thermal Responsementioning
confidence: 99%
“…[141,142] Poly(N-isopropylacrylamide) (PNIPAAm) is a typical example of a thermally responsive polymer that has a lower critical solution temperature (LCST) of about 32-33°C. [32] On a PNNIPAAm-modified flat substrate, the CA could be switched between hydrophobicity and hydrophilicity as the temperature passed through the LCST, which is the result of the competition between intra-and intermolecular hydrogen bonding (Fig.…”
Section: Thermal Responsementioning
confidence: 99%
“…Tuning the size of aggregates by the change of pH (Fig. 1a, micrometer range of aggregates at pH > 8.7), and the combination of the deposited aggregates with the textured structure of the fabric, allows for the fabrication of appropriate surface morphology [47] for the superhydrophobic coatings. Thus, the responsive nanoparticles demonstrate the dual effect on the coating formation: 1) tuneable sizes of the deposited aggregates, and 2) switching from hydrophilic surface in water to the hydrophobic surface in air upon heating.…”
Section: Full Papermentioning
confidence: 99%
“…For example, mixed polymer brushes comprising approximately equal amounts of hydrophobic and hydrophilic polymers have been used to fabricate surfaces with switchable wettability [3,4]. If the polymers phase separate along the direction perpendicular to the brush, the surface properties can switch between the properties of the two polymer species.…”
mentioning
confidence: 99%