1H and 13C-NMR studies on phenol-formaldehyde prepolymers for tannin-based adhesives

Gerald W. McGraw; Lawerence L. Lanucci; Seiji Ohara; Richard W. Hemingway

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¹H and ¹³C-NMR studies on phenol-formaldehyde prepolymers for tannin-based adhesives

Informally Refereed

Authors:

Gerald W. McGraw, Lawerence L. Lanucci, Seiji Ohara, Richard W. Hemingway

Year:

1989

Type:

Scientific Journal

Station:

Southern Research Station

Source:

Journal of Wood Chemical & Technology 9(2):201-217

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Abstract

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.

Citation

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