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Preparation and Characterization of pH‐sensitive Hydrogel Film of Chitosan/Poly(acrylic acid) Copolymer
Author(s) -
Yang Liming,
Shi Lili,
Chen Jie,
Pei Yong,
Zhu Feng,
Xia Yiben
Publication year - 2005
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200550708
Subject(s) - chitosan , copolymer , self healing hydrogels , acrylic acid , swelling , attenuated total reflection , fourier transform infrared spectroscopy , materials science , aqueous solution , polymer chemistry , chemical engineering , nuclear chemistry , chemistry , composite material , polymer , organic chemistry , engineering
A hydrogel film of chitosan/poly(acrylic acid) (CS/PAAc) copolymer with the property of pH sensitivity, was prepared by irradiating the chitosan film, which was then swelled by aqueous AAc solutions of different concentrations. The effects of the feed ratio of chitosan and AAc on the properties of the hydrogels, such as swelling ratio and pH‐sensitivity, were determined. Fourier transform infrared (FT‐IR) spectroscopy was applied in the attenuated total reflectance (ATR) mode for analyzing the structure change of the hydrogels after the treatment in buffer solutions of different pHs.