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Synthesis, characterization, and enzymatic degradation of chitosan/PEG hydrogel films
Author(s) -
Altinisik Aylin,
Yurdakoc Kadir
Publication year - 2011
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.34278
Subject(s) - thermogravimetric analysis , swelling , chitosan , differential scanning calorimetry , peg ratio , materials science , scanning electron microscope , fourier transform infrared spectroscopy , polymer chemistry , chemical engineering , nuclear chemistry , tartaric acid , chemistry , composite material , organic chemistry , physics , citric acid , thermodynamics , finance , engineering , economics
Poly(ethyleneglycol) (PEG)/tartaric acid (TA)‐crosslinked chitosan hydrogel (CPT) films were prepared, and the formation of the PEG/TA‐crosslinked structure was confirmed by Fourier transformed infrared (FTIR), nuclear magnetic resonance (NMR), and scanning electron microscope (SEM) measurements. The thermal properties of the crosslinked films were also determined with thermogravimetric analysis (TGA) and differential scanning calorimeter (DSC) analysis. The swelling properties of the films were investigated at different temperature and pH values. It was found that the swelling ratio increased with the decrease of pH value of the surrounding buffer solutions, amount of PEG, and with the increase of temperature. Swelling behavior of the PEG/TA‐crosslinked chitosan hydrogel films depended on pH and reversible with the temperature. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011