Recent Progress in Fourier Transform Infrared (FTIR) Spectroscopy Study of Compositional, Structural and Physical Attributes of Developmental Cotton Fibers

Abstract

Cotton fibers are natural plant products, and their end-use qualities depend on their stages of development. In general, the quantity of cellulose in cotton fibers increases rapidly, thus it leads to compositional, structural and physical attribute variations among the fibers with shorter and longer growth periods. This article discusses recent progress in applying the Fourier transform infrared (FTIR) spectroscopic technique to characterize these differences, to discriminate immature fibers from mature fibers, to assess fiber maturity and crystallinity and also to unravel the band assignments in crystalline and amorphous celluloses. The results were achieved through the use of various strategies, including wet chemical analysis, principal component analysis (PCA), simple algorithm development, two-dimensional correlation analysis and other independent fiber tests. Of particular interest is that, in general, immature fibers might have the characteristics of less than 21–28 dpa, MIR < 0.58 (in the maturity range of 0 to 1.0) and CIIR < 42% (in the crystallinity range of 0 to 100%).

Super absorbent, light, and highly flame retardant cellulose‐based aerogel crosslinked with citric acid

“…The peak related to CL‐CA at 2550 cm −1 shows the existence of carboxylic OH group in citric acid . Additionally, a decrease in intensity at 881 cm −1 may be associated with the functional groups in amorphous regions, and increasing of spectral intensity around 1184 cm −1 region can originate in crystalline regions . The bending band at 1420 cm −1 is connected with the intermolecular hydrogen at the CH 2 groups in non‐crosslinked sample .…”

Development of thermally stable and hygienic colored cotton fabric made by treatment with natural coconut shell extract

“…These bands are associated with the ring vibrations, overlapped with the stretching vibrations of the (C-OH) side groups and the (C-O-C) glycosidic band vibrations of cellulose chain. These are related to the decreasing glycosidic linkage, by increasing interaction with polyphenolics and metal salts chelation [59].…”

Surface Modification on Cellulose Nanofibers by TiO2 Coating for Achieving High Capture Efficiency of Nanoparticles

“…The vibration peak detected at 1637 cm −1 was related to the O-H bending vibration of adsorbed water [21]. The peaks between 1160 and 1015 cm −1 were assigned to a C-O-C asymmetric stretching vibration at the βglucosidic linkage in a cellulose chain [22], and the peak at 897 cm −1 was associated with the glycosidic linkage between glucose units in cellulose [23]. Regarding the TiO2-coated cellulose, the features of functional group of hydroxyl (OH) and carbonaceous presented at a wavenumber ranging from 3500 to 2800 cm −1 and 1700 to 1300 cm −1 [24,25], and the fingerprint of Ti-O bond was corresponding to the peaks located between 800 to 400 cm −1 [26].…”