The identification of fibers by infrared and Raman microspectroscopy

Lang, Patricia L.; Katon, J. E.; O'Keefe, J.F.; Schiering, David W.

doi:10.1016/0026-265x(86)90127-x

Cited by 82 publications

(39 citation statements)

References 2 publications

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“…12,13,18,23 The information obtained from X-ray diffraction reflects the state of the high crystalline structure in keratin fibers and does nothing but provide a part of the information about the whole of hierarchical structures. The information obtained from solid state NMR also simply reflects information about the whole of hierarchical structures.…”

Section: Introductionmentioning

confidence: 99%

Analysis of structural changes in bleached keratin fibers (black and white human hair) using Raman spectroscopy

Kuzuhara¹

2006

Biopolymers

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To investigate the influence of bleaching treatments on keratin fibers, the structure of cross-sections at various depths of bleached human hair (black and white human hair) was directly analyzed without isolating the cuticle and cortex, using Raman spectroscopy. The S-S band intensity existing from the cuticle region to the center of cortex region of virgin white human hair decreased, while the S-O band intensity at 1040 cm(-1), assigned to cysteic acid, increased by performing the bleaching treatment. Especially, the S-O band intensity of the cuticle region increased remarkably compared with that of the cortex region. Also, the amide III (unordered) band intensity in the cortex region increased, indicating that some of the proteins existing throughout the cortex region changed to the random coil form. Moreover, it has been found that the S-S band intensity existing from the cuticle region to the center of the cortex region of the virgin black human hair decreased remarkably, while the S-O band intensity increased significantly compared with that of the virgin white human hair by performing the bleaching treatment. From these experiments, we concluded that the melanin granules including metal ions act as a decomposition accelerator for the oxidizing agent, thereby leading to a higher level of disulfide (-SS-) group cleavage in the black human hair compared with that of the white human hair.

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Section: Introductionmentioning

confidence: 99%

Analysis of structural changes in bleached keratin fibers (black and white human hair) using Raman spectroscopy

Kuzuhara¹

2006

Biopolymers

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“…These methods have been variously employed for the study of textile fibres, not only to identify the fibres themselves and their state of deterioration, but also to confirm processing and dye treatments [2], [3], [4], [5], [6]. 3 Spectroscopic approaches have been widely used to distinguish the broad categories of cellulosic, proteinaceous and regenerated natural fibres and the many different types of synthetic fibre [7], [4], [8], [9]. The marked chemical differences between these groups of materials means that they are often readily distinguished.…”

Section: Introductionmentioning

confidence: 99%

Identification of Cellulosic Fibres by FTIR Spectroscopy - Thread and Single Fibre Analysis by Attenuated Total Reflectance

Garside¹,

Wyeth²

2003

Studies in Conservation

444

179

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SummaryThe ability to accurately identify fibres is of importance to conservators, allowing the most appropriate methods of treatment to be employed. Our research has concentrated on the development of an ATR FT-IR spectroscopic technique for the characterisation of cellulosic (plant) fibres.Six species of fibre were examined, taken largely from the bast group (flax, hemp, jute and ramie), along with cotton and sisal. Initially, unprocessed fibres were considered; subsequently, processed fibres from a variety of sources were examined. Peak intensity ratio techniques were employed to differentiate the fibre types on the basis of relative lignin content with respect to other cellular components.It was found that for each of the species of fibre, the ratios fell within characteristic ranges.

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“…Vibrational spectroscopy has found its place amongst the variety of fibre micro-identification methods [1,2] and presents the additional advantage that the products of cellulose degradation can be monitored [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Polarised ATR-FTIR Characterisation of Cellulosic Fibres in Relation to Historic Artefacts

Garside¹,

Wyeth²

2004

Restaurator

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SummaryThe utility of polarised attenuated-total-reflectance (ATR) FTIR spectroscopy was investigated for the identification of cellulosic fibres and characterisation of their state of degradation.Turning the polariser so that the electric vector is parallel (E pll ) or perpendicular (E prp ) provides a means of assessing the orientational crystallinity of cellulose from the polarised spectra of aligned plant fibres. Analysis of the spectra can reveal both the angle of microfibrillar wind and its directionality. Here, the best fits to the data suggest: flax 7°/S-spiral; sisal 25°/Z-spiral; coir 70°/Sspiral, where the predominant twist is given for the outer cell-wall regions sampled.Polarised-ATR-FTIR also allows degradation of the amorphous component of cellulose to be highlighted, by recording spectra with the optimum alignment of fibre and polariser. Changes observed on thermal ageing of flax in air at 190 °C are consistent with oxidation of amorphous cellulose and formation of carbonyl and carboxylate moieties; the non-dichroic nature of the carbonyl band confirms that the ordered crystalline regions were not primarily involved.

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The identification of fibers by infrared and Raman microspectroscopy

Cited by 82 publications

References 2 publications

Analysis of structural changes in bleached keratin fibers (black and white human hair) using Raman spectroscopy

Analysis of structural changes in bleached keratin fibers (black and white human hair) using Raman spectroscopy

Identification of Cellulosic Fibres by FTIR Spectroscopy - Thread and Single Fibre Analysis by Attenuated Total Reflectance

Polarised ATR-FTIR Characterisation of Cellulosic Fibres in Relation to Historic Artefacts

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