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Materials 2013, 6(1), 299-313; doi:10.3390/ma6010299

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

Cotton Structure & Quality Research Unit, SRRC, ARS, USDA, 1100 Robert E. Lee Blvd., New Orleans, LA 70124, USA
Received: 12 December 2012 / Revised: 12 January 2013 / Accepted: 16 January 2013 / Published: 22 January 2013
(This article belongs to the Special Issue Advances in Cellulosic Materials)
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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%).
Keywords: cotton fiber; cellulose; crystalline and amorphous cellulose; fiber maturity; fiber crystallinity; FTIR; attenuated total reflection; ATR cotton fiber; cellulose; crystalline and amorphous cellulose; fiber maturity; fiber crystallinity; FTIR; attenuated total reflection; ATR
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Liu, Y. Recent Progress in Fourier Transform Infrared (FTIR) Spectroscopy Study of Compositional, Structural and Physical Attributes of Developmental Cotton Fibers. Materials 2013, 6, 299-313.

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