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Multifunctional Electrospun Nanofibers Prepared from Poly(( N‐ isopropylacrylamide) ‐co‐ (N‐hydroxymethylacrylamide)) and Their Blends with 1,2‐Diaminoanthraquinone for NO Gas Detection
Author(s) -
Chen LiangNien,
Chiu YuCheng,
Hung JrJian,
Kuo ChiChing,
Chen WenChang
Publication year - 2014
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201300604
Subject(s) - nanofiber , lower critical solution temperature , poly(n isopropylacrylamide) , materials science , polymer chemistry , chemical engineering , interfacial polymerization , polymerization , contact angle , nanotechnology , composite material , polymer , copolymer , monomer , engineering
Multifunctional electrospun (ES) nanofibers are successfully prepared from blends of poly(( N‐ isopropylacrylamide) ‐co‐ (N‐hydroxymethylacrylamide)) (poly(NIPAAm ‐co‐ NMA)) with NO (g) ‐responsive 1,2‐diaminoanthraquinone (DAQ). Different compositions of poly(NIPAAm ‐co‐ NMA) are synthesized by free radical polymerization. The NMA content significantly affects the stability of the ES nanofibers in water and the NO (g) detection due to a change of the hydrophilic/hydrophobic characteristics. In addition, the fibers exhibit a significant volume (or hydrophilic/hydrophobic) change during the heating and cooling cycle between 25 and 50 °C, attributed to the lower critical solution temperature (LCST) characteristic of the thermoresponsive NIPAAm moiety. On the other hand, a distinct on/off switching of the optical absorption spectra and high color contrast on detecting the NO (g) are observed using the ES nanofibers of poly(NIPAAm ‐co‐ NMA)/DAQ blends. The high surface/volume of ES fibers enhance the sensitivity and responsive speed, compared with that of drop‐cast film. The above studies suggest that the prepared multifunctional ES nanofibers have potential applications in environmentally sensing devices.