A nondestructive FT-IR sampling technique was developed to study glass fiber composites. Two coupling agents, γ-APS (γ-aminopropyltriethoxysilane) and γ-MPS (γ-methacryloxypropyltrimethoxysilane) were used to test the validity of the technique. The spectra obtained
were compared with those obtained using the KBr pellet and diffuse reflectance techniques. The new technique was sensitive to changes in the coupling agent structure induced by heating, changing the drying environment, and pH. This technique could be used to monitor surface treatments on glass
mats or to do quantitative studies of such systems in the 3800 to 1100 cm−1 range of the mid-infrared spectrum.
Department of Macromolecular Science, Case Western-Reserve University, Cleveland, Ohio 44106
Publication date: January 1, 1984
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