Applications of Infrared Absorption Spectroscopy to Investigations of Cotton and Modified Cottons

Abstract

The potassium bromide disc technique is being used for rapid, simple, and reproducible measurement of the infrared spectra, of modified cotton fibers, yarns, and fabrics. Applications of the procedure have demonstrated that chemical modification can be readily detected and identified and that the extent of treatment can be quantitatively estimated. Experiments have been designed to select bands most useful in investigations of cotton modified by esterification. etherification, or replacement reactions. The examples cited illustrate the potential usefulness of infrared absorption spectra to studies in this field. A list has been prepared of 50 infrared absorption bands (and correlations with vibrating groups which give rise to them) which summarize the spectral characteristics which have been found most useful in investigations of cottons modified by esterification, etherification, and replacement reactions.

Effects of tempering time and tempering temperature of caustic mercerization on the spectral and electrical properties of Egyptian cotton fibres

“…The room-temperature infrared absorption spectra of cotton fabrics were obtained with a Perkin-Elmer double beam spectrophotometer by the KBr disk method of O'Connor et al [5].…”

Cross-Linking of Partially Cyanoethylated Cotton

“…respectively). that the treatment of partially cyanoethylated cotton with hydrogen peroxide introduces into the spectra the same amide band at 6.Op arising from the C=O stretching as that which has been found in direct arbamoylethylation of cotton by reaction with scrylamide [7] ] and decreases the intensity of the --CN band at 4.4~. The 6.1~ band observed in the unmodified cotton is due to the absorbed water [7].…”

Variation in Fine Structure of Partially Benzylated Cotton Fibers With Increasing Degree of Substitution By X-Ray Study

“…1)~ was determined from percentage gain in dry weight of the treated sample. In Table I in the infrared absorption spectrum of these samples, as suggested by O'Connor et al [12]. Though the samples could he graded in the increasing order of benzylation, no definite values of DS could be ascribed to them as the bands were too short at these low substitutions.…”