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Chemical Dual‐Responsive Wettability of Superhydrophobic PANI‐PAN Coaxial Nanofibers
Author(s) -
Zhu Ying,
Feng Lin,
Xia Fan,
Zhai Jin,
Wan Meixiang,
Jiang Lei
Publication year - 2007
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200600902
Subject(s) - wetting , nanofiber , superhydrophilicity , materials science , contact angle , spinning , conductivity , polymer , chemical engineering , coaxial , polymerization , nanotechnology , polymer chemistry , composite material , chemistry , computer science , engineering , telecommunications
PANI‐PAN coaxial nanofibers have been prepared by electro‐spinning during polymerization. The surface of the resulting nanofibers is superhydrophobic with a water contact angle up to 164.5°. Conductivity of the PANI‐PAN nanofibers is about 4.3 × 10 −2 S · cm −1 . The superhydrophobic nanofibers show a chemical dual‐responsive surface wettability, which can be easily triggered by changing pH value or redox properties of the solution. A reversible conversion between superhydrophobicity and superhydrophilicity can be performed in a short time. The strategy used here may provide an easy method to control the wettability of smart surfaces by using properties of low‐cost functional polymers.