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Thermal characteristics of IPNs composed of polyallylamine and chitosan
Author(s) -
Kim Seon Jeong,
Park Sang Jun,
Shin MiSeon,
Lee Yong Hee,
Kim Nam Gyun,
Kim Sun I.
Publication year - 2002
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.10767
Subject(s) - thermogravimetric analysis , differential scanning calorimetry , materials science , chitosan , polymer chemistry , glass transition , radical polymerization , interpenetrating polymer network , fourier transform infrared spectroscopy , polymer , chemical engineering , thermal decomposition , polymerization , composite material , chemistry , organic chemistry , thermodynamics , physics , engineering
Interpenetrating polymer network (IPN) hydrogels composed of polyallylamine and chitosan were synthesized by radical polymerization using 2,2‐dimethyl‐2‐ phenylacetophenone (DMPAP) and methylene bisacrylicamide (MBAAm) as initiator and crosslinker, respectively. The IPNs thus obtained were characterized by using Fourier transform infrared (FT‐IR) spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and dielectric analysis (DEA). The melting temperatures of IPNs were observed with increasing chitosan content by DSC. DEA was employed to ascertain the glass transition temperature ( T g ) of IPNs. From the result of DEA, IPNs exhibited two T g s indicating the presence of phase separation in the IPN. The thermal decomposition of IPNs was investigated by TGA and appeared at near 270 °C. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 1956–1960, 2002