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Fourier Transform Infrared Study of the Dissolution Mechanism of Poly(methyl methacrylate) in CO 2 ‐Expanded Ethanol
Author(s) -
Matsuyama Kiyoshi,
Mishima Kenji
Publication year - 2009
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200800594
Subject(s) - dissolution , fourier transform infrared spectroscopy , infrared , methyl methacrylate , infrared spectroscopy , ethanol , chemistry , fourier transform , materials science , chemical engineering , polymer , organic chemistry , copolymer , optics , physics , engineering , mathematical analysis , mathematics
Both CO 2 and ethanol are nonsolvents for poly(methyl methacrylate) (PMMA) at 303 K, but PMMA dissolves in CO 2 ‐expanded ethanol (red spectrum, see figure). The dissolution process consists of swelling of the PMMA by the CO 2 , which allows the ethanol to penetrate the PMMA and interact with the polymer through carbonyl–hydroxyl hydrogen bonds to separate the polymer chains.