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Thermally Tunable Surface Wettability of Electrospun Fiber Mats: Polystyrene/Poly(N-isopropylacrylamide) Blended versus Crosslinked Poly[(N-isopropylacrylamide)-co-(methacrylic acid)]

Title
Thermally Tunable Surface Wettability of Electrospun Fiber Mats: Polystyrene/Poly(N-isopropylacrylamide) Blended versus Crosslinked Poly[(N-isopropylacrylamide)-co-(methacrylic acid)]
Author
Wolfgang M. Sigmund
Keywords
electrospinning; fibers; responsive wettability; stimuli-sensitive polymers; surface chemistry
Issue Date
2011-11
Publisher
WILEY-V C H VERLAG GMBH
Citation
Macromolecular Rapid Communications, 2011, 32(21), P.1716-1721
Abstract
This work reports on thermally tunable surface wettability of electrospun fiber mats of: polystyrene (PS)/poly(N-isopropylacrylamide) (PNIPA) blended (bl-PS/PNIPA) and crosslinked poly[(N-isopropylacrylamide)-co-[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 degrees and superhydrophilic contact angle (CA) values at extreme temperatures. Weight loss studies carried out at 10 degrees 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.
URI
https://onlinelibrary.wiley.com/doi/abs/10.1002/marc.201100373http://repository.hanyang.ac.kr/handle/20.500.11754/72962
ISSN
1022-1336
DOI
10.1002/marc.201100373
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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