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Determination of the Finish on Flame-retarded Acrylic Fabrics by an Infra-red Spectroscopic Reflection Technique

The use of the f.m.i.r. technique in i.r. spectroscopy is proposed for the determination of the finish in flame-retarded acrylic fabrics. The spectrum band occurring at 2250 cm-1, which corresponds to the nitrile group, is used as an internal standard in the fabric/finish absorbance relationship and this enables the concentration of finish on different flame-retarded specimens to be measured

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