Fourier Transform Infrared Study of the Dissolution Mechanism of Poly(methyl methacrylate) in CO2-Expanded Ethanol

Both CO2 and ethanol are nonsolvents for poly(methyl methacrylate) (PMMA) at 303 K, but PMMA dissolves in CO2‐expanded ethanol (red spectrum, see figure). The dissolution process consists of swelling of the PMMA by the CO2, which allows the ethanol to penetrate the PMMA and interact with the polymer...

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Bibliographic Details
Published in:Chemphyschem 2009-02, Vol.10 (3), p.503-506
Main Authors: Matsuyama, Kiyoshi, Mishima, Kenji
Format: Article
Language:English
Subjects:
Applied sciences
carbon dioxide
Exact sciences and technology
IR spectroscopy
Organic polymers
Physicochemistry of polymers
polymers
Properties and characterization
solute-solvent interactions
Solution and gel properties
supercritical fluids
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Summary:Both CO2 and ethanol are nonsolvents for poly(methyl methacrylate) (PMMA) at 303 K, but PMMA dissolves in CO2‐expanded ethanol (red spectrum, see figure). The dissolution process consists of swelling of the PMMA by the CO2, which allows the ethanol to penetrate the PMMA and interact with the polymer through carbonyl–hydroxyl hydrogen bonds to separate the polymer chains. Both CO2 and ethanol are nonsolvents for poly(methyl methacrylate) (PMMA) at 303 K, but PMMA dissolves in CO2‐expanded ethanol (red spectrum, see figure). The dissolution process consists of swelling of the PMMA by the CO2, which allows the ethanol to penetrate the PMMA and interact with the polymer through carbonyl–hydroxyl hydrogen bonds to separate the polymer chains.
ISSN:1439-4235
1439-7641
DOI:10.1002/cphc.200800594