Supercritical Fluid Processing of Polymers
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چکیده
We have applied in situ FTIR, ATR-IR and photoacoustic spectroscopy to identify for the first time specific molecular interactions between CO2 and polymers that may be responsible for the plasticization of glassy polymers. The changes in IR spectra of CO2 incorporated into various polymers indicate a specific interaction between CO2 and polymer functional groups. Increased polymer segmental mobility has also been observed, indicative of the plasticization phenomenon.
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