Two-dimensional Raman-near infrared heterospectral correlation spectroscopy studies of the specific interactions in partially miscible blends of poly(methyl methacrylate) and poly(4-vinylphenol)

Ren, Y.; Matsushita, A.; Matsukawa, K.; Inoue, H.; Minami, Y.; Noda, I.; Ozaki, Y.
March 2000
AIP Conference Proceedings;2000, Vol. 503 Issue 1, p250
Academic Journal
Fourier-transform (FT) Raman and near infrared (NIR) spectra have been measured for poly(methyl methacrylate) (PMMA) and its partially miscible blends with poly(4-vinylphenol) (PVPh) of contents from 1 to 10 wt%. Generalized two-dimensional (2D) correlation spectroscopy has been applied to analyze the composition-dependent FT-Raman and NIR spectral variations of the blends. The Raman-NIR hetero-correlation analysis detects a band at 1706 cm-1 for the hydrogen-bonded C==O of PMMA and a band at 6764 cm-1 for the hydrogen-bonded O&sngbnd;H of PVPh. The two bands are involved in the specific interaction between PMMA and PVPh that is responsible for the partial miscibility of the blends. © 2000 American Institute of Physics.


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