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

Garside, Paul; Wyeth, Paul

doi:10.1515/rest.2004.249

Cited by 10 publications

(4 citation statements)

References 14 publications

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“…The spectra obtained in this study show the band at 1427 cm -1 , which suggests that the samples contained a mixture of crystallized cellulose I and amorphous cellulose, in good agreement with the results of XRD. The doublet at 1335 and 1315 cm -1 , which mainly appears in the cellulose of crystalline cellulose I, was observed and can be assigned to C-OH plane bending and CH 2 wagging, respectively (Garside and Wyeth 2004). The OH plane deformation also exhibits a signal at 1200 cm -1 .…”

Section: Ftir Spectramentioning

confidence: 93%

Acetic Acid Enhanced Purification of Crude Cellulose From Sugarcane Bagasse: Structural and Morphological Characterization

Bian¹,

Peng²,

Peng³

et al. 2012

BioResources

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Crude cellulose prepared from alkali-extracted sugarcane bagasse was subjected to a rapid purification treatment with a mixture of 80% acetic acid-68% nitric acid (10/1, v/v) at 120 °C for 15 min. The yields of the preparations decreased slightly from 57.3%-58.6% in the crude cellulose preparations to 50.3%-51.9% in the purified cellulose samples. The purification treatment removed large amounts of resistant hemicelluloses strongly associated to the cellulose. XRD analysis revealed that the structure of both the crude and purified cellulose was cellulose I. Compared to the crude cellulose, a slight increase in the crystallinity index of the purified cellulose was observed by FTIR, XRD, and CP/MAS 13 C NMR analyses. In addition, SEM showed that the macrofibril surface of the crude cellulose was almost free of trenches, but many terraces, steps, and kinks formed in the preparations after the purification.

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Section: Ftir Spectramentioning

confidence: 93%

Acetic Acid Enhanced Purification of Crude Cellulose From Sugarcane Bagasse: Structural and Morphological Characterization

Bian¹,

Peng²,

Peng³

et al. 2012

BioResources

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“…The ATR technique requires just a few fibers or a short length of yarn for analysis. Building on earlier work carried out using Pol-ATR, in which the use of the technique in investigating the crystallinity and microstructure of cellulosic fibers had been shown 11,12 and in which a limited strength/crystallinity parameter relationship in silk had been demonstrated, 13 a method was developed to assess the degree of orientation of crystalline fibroin in the silk fibers.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Historic Silk by Polarized Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy for Informed Conservation

Garside¹,

Lahlil²,

Wyeth³

2005

Appl Spectrosc

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When assessing historic textiles and considering appropriate conservation, display, and storage strategies, characterizing the physical condition of the textiles is essential. Our work has concentrated on developing nondestructive or micro-destructive methodologies that will permit this. Previously, we have demonstrated a correlation between the physical deterioration of unweighted and "pink" tin (IV) chloride weighted silk and certain measurable spectroscopic and chromatographic signatures, derived from polarized Fourier transform infrared attenuated total reflectance (FTIR-ATR) spectroscopy (Pol-ATR) and high-performance liquid chromatography (HPLC) microsampling analyses. The application of the Pol-ATR technique to aged silk characterization has now been extended to include a more comprehensive range of weighting methods and aging regimes. This was intended to replicate the full spectrum of states of deterioration observed in silk textiles, from pristine to heavily degraded. Breaking strength was employed as a measure of the physical integrity of the fibers, and, as expected, decreased with aging. An orientational crystallinity parameter, reflecting the microstructural ordering of the fibroin polymer within the fibers, was derived from the Pol-ATR spectra. A good correlation was observed between the breaking strength of the variety of fibers and this parameter. This suggests that the physical state of historic silk fabrics might be adequately characterized for conservation purposes by such indirect micromethodology.

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“…[ 28 ] The hydrophilic nature of the natural fiber is confirmed by the absorption peak at 1610 cm −1 , around 1724.2 cm − 1 for C=C benzene stretching ring. [ 29,30 ] The peaks obtained at 3419 cm −1 is corresponds to O–H stretching of cellulose, the peak observed at 2920 cm −1 could be assigned to C–H stretching vibration of CH in cellulose component, and the peak seen at 2850 cm −1 shows CH stretching of hemicelluloses. [ 31–34 ] The FTIR analysis shows the presence of cellulose, hemicellulose, and lignin, and confirms the results obtained from chemical analysis.…”

Section: Resultsmentioning

confidence: 99%

Valorization of Prickly Pear Seed and Olive Husk Agricultural Wastes for Plastic Reinforcement: The Influence on the Mechanical and Thermal Properties

Klaai

Hammiche

Boukerrou

2023

Macromolecular Symposia

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Currently, food waste is a major concern for businesses, governments, and consumers. Fruit processing creates many of by‐products, from undesirables to fruit skins, seeds, and fleshy parts. These by‐products make up to 30% of the initial mass of processed fruit. This goal can be achieved by transforming fruit waste into reinforcement and integrating it into polymeric materials. In this work, olive husk flours (OHF) and prickly pear seed flours (PPSF) are used as reinforcements of poly (lactic acid) (PLA) matrix. Initially, the physico‐chemical, particle size, spectroscopy (FTIR), and thermal characterization of its fibers are studied and compared. Then, the composite materials studied are manufactured with a twin‐screw extruder having a fiber content of 10%, 20%, and 30% by weight; its properties have been studied and compared. The characterization of these two fibers shows that the quantity of cellulose is greater in the OHF and that the latter is more thermally stable. For the composite material, the PLA /OHF are the most responsive in thermal and mechanical behaviors since their degradation temperatures are closer to pure PLA and the tensile modulus is higher compared to the PLA/PPSF composites. The equilibrium water uptake value is higher for composites reinforced with OHF than systems with PPSF.

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

Cited by 10 publications

References 14 publications

Acetic Acid Enhanced Purification of Crude Cellulose From Sugarcane Bagasse: Structural and Morphological Characterization

Acetic Acid Enhanced Purification of Crude Cellulose From Sugarcane Bagasse: Structural and Morphological Characterization

Characterization of Historic Silk by Polarized Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy for Informed Conservation

Valorization of Prickly Pear Seed and Olive Husk Agricultural Wastes for Plastic Reinforcement: The Influence on the Mechanical and Thermal Properties

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