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Abstract
In this contribution, the temperature-dependent swelling behavior of vapor-deposited smart polymer thin films is shown to depend on cross-linking and deposited film thickness. Smart polymers find application in sensor and actuator setups and are mostly fabricated on delicate substrates with complex nanostructures that need to be conformally coated. As initiated chemical vapor deposition (iCVD) meets these specific requirements, the present work concentrates on temperature-dependent swelling behavior of iCVD poly(N-isopropylacrylamide) thin films. The transition between swollen and shrunken state and the corresponding lower critical solution temperature (LCST) was investigated by spectroscopic ellipsometry in water. The films' density in the dry state evaluated from X-ray reflectivity could be successfully correlated to the position of the LCST in water and was found to vary between 1.1 and 1.3 g/cm3 in the thickness range 30-330 nm. This work emphasizes the importance of insights in both the deposition process and mechanisms during swelling of smart polymeric structures.
Originalsprache | englisch |
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Seiten (von - bis) | 9692-9699 |
Seitenumfang | 8 |
Fachzeitschrift | Macromolecules |
Jahrgang | 51 |
Ausgabenummer | 23 |
DOIs | |
Publikationsstatus | Veröffentlicht - 11 Dez. 2018 |
ASJC Scopus subject areas
- Organische Chemie
- Polymere und Kunststoffe
- Anorganische Chemie
- Werkstoffchemie
Kooperationen
- NAWI Graz
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In-situ Swelling Studies in Humidity and Water of Hydrogel Thin Films deposited by initiated Chemical Vapor Deposition
Fabian Tobias Muralter (Redner/in)
18 Juni 2018Aktivität: Vortrag oder Präsentation › Vortrag bei Konferenz oder Fachtagung › Science to science
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Swelling Behavior of Thin Hydrogel Films in Humidity and when Water-immersed
Fabian Tobias Muralter (Redner/in)
13 März 2018Aktivität: Vortrag oder Präsentation › Vortrag bei Konferenz oder Fachtagung › Science to science
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Thickness-Dependent Swelling Behavior of Vapor-Deposited Hydrogel Thin Films
Fabian Tobias Muralter (Redner/in)
11 Sept. 2018Aktivität: Vortrag oder Präsentation › Posterpräsentation › Science to science