Thermoresponsive PNIPAM/Silica Nanoparticles by Direct Photopolymerization in Aqueous Media
- This article presents a simple and facile method to fabricate thermoresponsive polymer-grafted silica particles by direct surface-initiated photopolymerization of N-isopropylacrylamide (NIPAM). This method is based on silica particles bearing thiol functionalities, which are transformed into thiyl radicals by irradiation with UV light to initiate the polymerization of NIPAM in aqueous media at room temperature. The photopolymerization of NIPAM could be applied to smaller thiol-functionalized particles (approximate to 48 nm) as well as to larger particles (approximate to 692 nm). Hollow poly(NIPAM) capsules could be formed after etching away the silica cores from the composite particles. It is possible to produce tailor-made composite particles or capsules for particular applications by extending this approach to other vinyl monomers. (c) 2015 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 2015, 53, 1260-1267
MetadatenVerfasserangaben: | Hua Zou, Helmut SchlaadORCiDGND |
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DOI: | https://doi.org/10.1002/pola.27593 |
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ISSN: | 0887-624X |
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ISSN: | 1099-0518 |
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Titel des übergeordneten Werks (Englisch): | Journal of polymer science : A, Polymer chemistry |
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Verlag: | Wiley-Blackwell |
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Verlagsort: | Hoboken |
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Publikationstyp: | Wissenschaftlicher Artikel |
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Sprache: | Englisch |
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Jahr der Erstveröffentlichung: | 2015 |
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Erscheinungsjahr: | 2015 |
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Datum der Freischaltung: | 27.03.2017 |
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Freies Schlagwort / Tag: | nanocomposites; nanoparticles; photopolymerization; silica nanoparticles; surface-initiated photopolymerization; thermoresponsive; thiol |
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Band: | 53 |
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Ausgabe: | 10 |
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Seitenanzahl: | 8 |
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Erste Seite: | 1260 |
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Letzte Seite: | 1267 |
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Fördernde Institution: | Max Planck Society |
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Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
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Peer Review: | Referiert |
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