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Medientyp:
E-Artikel
Titel:
Thermally Tunable Surface Wettability of Electrospun Fiber Mats: Polystyrene/Poly(N‐isopropylacrylamide) Blended versus Crosslinked Poly[(N‐isopropylacrylamide)‐co‐(methacrylic acid)]
Beteiligte:
Muthiah, Palanikkumaran;
Hoppe, Sarah M.;
Boyle, Timothy J.;
Sigmund, Wolfgang
Erschienen:
Wiley, 2011
Erschienen in:Macromolecular Rapid Communications
Sprache:
Englisch
DOI:
10.1002/marc.201100373
ISSN:
1022-1336;
1521-3927
Entstehung:
Anmerkungen:
Beschreibung:
<jats:title>Abstract</jats:title><jats:p>This work reports on thermally tunable surface wettability of electrospun fiber mats of: polystyrene (PS)/poly(<jats:italic>N</jats:italic>‐isopropylacrylamide) (PNIPA) blended (bl‐PS/PNIPA) and crosslinked poly[(<jats:italic>N</jats:italic>‐isopropylacrylamide)‐<jats:italic>co</jats:italic>‐[methacrylic acid)] (PNIPAMAA) (xl‐NIPAMAA). Both the bl‐PS/PNIPA and xl‐PNIPAMAA fiber mats demonstrate reversibly switchable surface wettability, with the bl‐PS/PNIPA fiber mats approaching superhydrophobic ≥150° and superhydrophilic contact angle (CA) values at extreme temperatures. Weight loss studies carried out at 10 °C indicate that the crosslinked PNIPAMAA fiber mats had better structural integrity than the bl‐PS/PNIPA fiber mats. PNIPA surface chemistry and the Cassie–Baxter model were used to explain the mechanism behind the observed extreme wettability.<jats:boxed-text content-type="graphic" position="anchor"><jats:graphic xmlns:xlink="http://www.w3.org/1999/xlink" mimetype="image/jpeg" position="anchor" specific-use="enlarged-web-image" xlink:href="graphic/mgra001.jpg"><jats:alt-text>magnified image</jats:alt-text></jats:graphic></jats:boxed-text>
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