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Preparation and electroresponsive property of poly(vinyl alcohol)/sodium alginate composite hydrogel
Author(s) -
Li R. X.,
Zhang X. Z.,
Zhao J. S.,
Wu J. M.,
Guo Y.,
Guan J.
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.24521
Subject(s) - vinyl alcohol , composite number , aqueous solution , materials science , sodium alginate , composite material , sodium , bending , chemical engineering , polymer chemistry , chemistry , polymer , organic chemistry , engineering , metallurgy
Poly(vinyl alcohol) (PVA)/sodium alginate composite hydrogel was prepared by solidifing the blending solution of PVA and sodium alginate, then freezing and thawing repeatedly. In the direct current electric field, the composite hydrogel in aqueous NaCl solution swelled, contracted, and bent. The gel's bending speed and maximum bending degree increased with increase in the electric field intensity and the concentration of NaCl solution. The maximum bending degree increased with increase in the sodium alginate content in the composition hydrogel. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 3493–3496, 2006