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    Author(s): Gerald W. McGraw; Lawerence L. Lanucci; Seiji Ohara; Richard W. Hemingway
    Date: 1989
    Source: Journal of Wood Chemical & Technology 9(2):201-217
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (2.0 MB)


    The number average structure and the molecular weight distribution of phenol-formaldehyde prepolymers for use in synthesis of tannin-based adhesive resins were determined with 1H and 13C-NMR spectroscopy and gel permeation chromatography of acetylated resins. These methods were used to determine differences in phenol-formaldehyde prepolymers prepared under different reaction conditions. Quantitative 13C-NMR techniques provided a detailed analysis of the structure of a phenol-formaldehyde prepolymer.

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    McGraw, Gerald W.; Lanucci, Lawerence L.; Ohara, Seiji; Hemingway, Richard W. 1989. 1H and 13C-NMR studies on phenol-formaldehyde prepolymers for tannin-based adhesives. Journal of Wood Chemical & Technology 9(2):201-217

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