Influence of Water on the OH Valency Range in Deconvoluted FTIR Spectra of Cellulose

Fengel, D.

doi:10.1515/hfsg.1993.47.2.103

Cited by 86 publications

(59 citation statements)

References 5 publications

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“…The peak maximum shifts from 3350 (recent samples) to 3306 cm -1 (prehistoric samples), but the whole peak shifts from 2930 to 3358 cm -1 . The region from 3200 to 3700 cm -1 is assigned to OH vibrations (Fengel 1993). The shift of the peak could be explained by the higher amount of OH bonds remaining after a deacetylation process (Stefke et al 2008).…”

Section: All Samplesmentioning

confidence: 99%

Aging of wood under long-term storage in a salt environment

et al. 2016

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Aging of archeological wood in a salt environment was assessed in Hallstatt, Upper Austria, where Bronze Age wooden findings of the archeological salt mining site were compared with recent wood samples from the same site. Three species (Picea abies, Abies alba and Fagus sylvatica) were investigated. Recent samples covered all main geological units within the salt valley. FTIR spectroscopy was used to determine differences in wood chemistry. Principal component analysis was used to display the segregation of the data set according to the different factors and to give a measure of the strength of the effects. Results revealed that deacetylation processes took place at the wood material. The aging process affects wood chemistry significantly stronger than differences in earlywood and latewood. Together these two factors accounted for 80 % of data variability. As a third factor, the tree species segregated the data set. Geological differences in the sampling sites were not mirrored in the FTIR spectra.

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Section: All Samplesmentioning

confidence: 99%

Aging of wood under long-term storage in a salt environment

et al. 2016

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“…Some mathematical methods (e.g. deconvolution [25][26][27] and second-derivative [28][29][30]) were used to identify the exact peak for hydrogen bonds. Hinterstoisser and Salmén [3,31] recently used DMA-FTIR to investigate OH stretching vibration regions between 3700 and 3000 cm −1 in the cellulose.…”

Section: Hydrogen Bonds Analysis Of Natural Celluloses By Using Ftirmentioning

confidence: 99%

Fourier Transform Infrared Spectroscopy for Natural Fibres

Fan¹,

Dai²,

Huang³

2012

Fourier Transform - Materials Analysis

405

248

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“…A reduction in the broad band around 3,368 cm -1 , attributed to OH stretching, was observed as well as a reduction of the band at 2,900 cm -1 , assigned to CH stretching (Fig. 4a) [18]. Beside these bands, which allow no specific conclusion on the changes of the different wood polymers, also the bands in the fingerprint region (1,800-750 cm -1 ) were less intense.…”

Section: Resultsmentioning

confidence: 91%

Inducing large deformation in wood cell walls by enzymatic modification

et al. 2007

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It has been shown recently that wood with a high cellulose microfibril angle in the S2-layer, e.g. compression wood, shows permanent plastic deformation without significant mechanical damage to the matrix. This molecular stick-slip mechanism was explained by a gliding of the cellulose fibrils, after a certain shear stress in the matrix was exceeded [1]. Such a material behaviour would be desirable for various applications, for instance, to cover complex geometries with highly deformable veneers as needed in the automotive industry. However, veneers that are typically used for these purposes have a rather brittle failure behaviour, which leads to breakage, and drastic quality and productivity losses. A better deformability of such veneers might be achieved when the underlying deformation principles are conferred by modifying the wood cell wall components, in particular the cellulose fibrils and their matrix coupling. Enzyme treatments were performed on mechanically isolated wood fibres to plastify the entire lignified secondary cell wall. Cellulase Onozuka R-10 from Trichoderma viride (E.C.3.2.1.4) with activity on cellulose and xylan was utilized. Micromechanical tests and FT-IR microscopy studies revealed the change of mechanical properties and nanostructural features of the cell wall. An extended deformability was achieved for two of ten of the modified fibres.

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Influence of Water on the OH Valency Range in Deconvoluted FTIR Spectra of Cellulose

Cited by 86 publications

References 5 publications

Aging of wood under long-term storage in a salt environment

Aging of wood under long-term storage in a salt environment

Fourier Transform Infrared Spectroscopy for Natural Fibres

Inducing large deformation in wood cell walls by enzymatic modification

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