TY - GEN
T1 - Ultra-high hydrophobicity on the surface of nanocomposite hydrogels with a poly(n-isopropylacrylamide) / clay network
AU - Haraguchi, Kazutoshi
AU - Li, Huan Jun
PY - 2009
Y1 - 2009
N2 - Surface wettability is one of the most important properties of all materials, since it reflects the real structure and chemical composition at the outer-most surface, and is a decisive factor in many properties. As readily expected from their compositions, soft polymeric hydrogels, which consist largely of water and a hydrophilic polymer network, are naturally hydrophilic, and their surfaces generally show very low ?w. Here, we report extraordinarily high hydrophobicity, i.e. abnormally high values of ?w, (e.g. 120°), observed at the cross-sectional surfaces of nanocomposite hydrogels (NC gels) consisting of poly(N-isopropylacrylamide) (PNIPA) / clay network. Also, characteristic surface properties such as the reversible change of ?w by altering the circumstances and their stability are discussed.
AB - Surface wettability is one of the most important properties of all materials, since it reflects the real structure and chemical composition at the outer-most surface, and is a decisive factor in many properties. As readily expected from their compositions, soft polymeric hydrogels, which consist largely of water and a hydrophilic polymer network, are naturally hydrophilic, and their surfaces generally show very low ?w. Here, we report extraordinarily high hydrophobicity, i.e. abnormally high values of ?w, (e.g. 120°), observed at the cross-sectional surfaces of nanocomposite hydrogels (NC gels) consisting of poly(N-isopropylacrylamide) (PNIPA) / clay network. Also, characteristic surface properties such as the reversible change of ?w by altering the circumstances and their stability are discussed.
KW - Clay
KW - Hydrogel
KW - Nanocomposite
KW - PNIPA
KW - Surface property
UR - http://www.scopus.com/inward/record.url?scp=84904334950&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84904334950
SN - 9787122067876
T3 - ICAFPM 2009 - Proceedings of 2009 International Conference on Advanced Fibers and Polymer Materials
SP - 1009
EP - 1012
BT - ICAFPM 2009 - Proceedings of 2009 International Conference on Advanced Fibers and Polymer Materials
PB - Chemical Industry Press
T2 - 2009 International Conference on Advanced Fibers and Polymer Materials, ICAFPM 2009
Y2 - 21 October 2009 through 24 October 2009
ER -