Infrared Spectroscopy of Fiber Flax

Титок, В. В.; Леонтьев, Виктор Николаевич; Yurenkova, S. I.; Nikitinskaya, T. V.; Barannikova, Tatiana; Хотылева, Л. В.

doi:10.1080/15440470903579275

Cited by 20 publications

(16 citation statements)

References 8 publications

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“…In addition, the band at 1735 cm −1 has not been observed for any man-made fiber samples, but appeared in several natural fiber samples (flax, hemp, sisal), and can be related to their pectin content. 37 , 38 A strong band in IR spectra of natural fibers at 1425 cm −1 assigned to CH 2 or O–C–H bending appears weak and shifted to 1420 cm −1 for man-made fibers, which is in accordance with prior reports. 39 Further, absorption bands at 1105 and 1051 cm −1 assigned to the antisymmetric and symmetric C–O–C stretching modes, respectively, show high intensity for natural fibers but merely appear as shoulders in man-made fiber samples.…”

Section: Resultssupporting

confidence: 91%

On the Identification of Rayon/Viscose as a Major Fraction of Microplastics in the Marine Environment: Discrimination between Natural and Manmade Cellulosic Fibers Using Fourier Transform Infrared Spectroscopy

et al. 2016

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This work was sparked by the reported identification of man-made cellulosic fibers (rayon/viscose) in the marine environment as a major fraction of plastic litter by Fourier transform infrared (FT-IR) transmission spectroscopy and library search. To assess the plausibility of such findings, both natural and man-made fibers were examined using FT-IR spectroscopy. Spectra acquired by transmission microscopy, attenuated total reflection (ATR) microscopy, and ATR spectroscopy were compared. Library search was employed and results show significant differences in the identification rate depending on the acquisition method of the spectra. Careful selection of search parameters and the choice of spectra acquisition method were found to be essential for optimization of the library search results. When using transmission spectra of fibers and ATR libraries it was not possible to differentiate between man-made and natural fibers. Successful differentiation of natural and man-made cellulosic fibers has been achieved for FT-IR spectra acquired by ATR microscopy and ATR spectroscopy, and application of ATR libraries. As an alternative, chemometric methods such as unsupervised hierarchical cluster analysis, principal component analysis, and partial least squares-discriminant analysis were employed to facilitate identification based on intrinsic relationships of sample spectra and successful discrimination of the fiber type could be achieved. Differences in the ATR spectra depending on the internal reflection element (Ge versus diamond) were observed as expected; however, these did not impair correct classification by chemometric analysis. Moreover, the effects of different levels of humidity on the IR spectra of natural and man-made fibers were investigated, too. It has been found that drying and re-humidification leads to intensity changes of absorption bands of the carbohydrate backbone, but does not impair the identification of the fiber type by library search or cluster analysis.

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Section: Resultssupporting

confidence: 91%

On the Identification of Rayon/Viscose as a Major Fraction of Microplastics in the Marine Environment: Discrimination between Natural and Manmade Cellulosic Fibers Using Fourier Transform Infrared Spectroscopy

et al. 2016

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“…The lack of absorption bands in considered wavelength is characteristic of CF [57]. For FF fiber, several absorption bands were denoted, including 3337 and 3296 cm −1 (O-H stretching band), overlapping 2900 and 2896 cm −1 (C-H stretching and C-H 2 symmetrical stretching), 1713 cm −1 (C=O carbonyl stretching of hemicellulose), 1620 cm −1 (water absorbed in cellulose), 1432 and 1372 cm −1 (-CH 3 asymmetric and C-H symmetric deformations from lignin), 1335 cm −1 (aromatic ring of the cellulose), 1101 cm −1 (C-O-C symmetric glycosidic stretch), 1052 cm −1 (C-OH stretching vibration of cellulose backbone), and 896 cm −1 (phase ring stretching from the cellulose backbone) [58][59][60]. Figure 4 shows the characteristic spectra for epoxy-based composition after curing.…”

Section: Resultsmentioning

confidence: 99%

Comparative Study of the Reinforcement Type Effect on the Thermomechanical Properties and Burning of Epoxy-Based Composites

et al. 2021

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Aramid (AF), glass (GF), carbon (CF), basalt (BF), and flax (FF) fibers in the form of fabrics were used to produce the composites by hand-lay up method. The use of fabrics of similar grammage for composites’ manufacturing allowed for a comprehensive comparison of the properties of the final products. The most important task was to prepare a complex setup of mechanical and thermomechanical properties, supplemented by fire behavior analysis, and discuss both characteristics in their application range. The mechanical properties were investigated using tensile and flexural tests, as well as impact strength measurement. The investigation was improved by assessing thermomechanical properties under dynamic deformation conditions (dynamic mechanical–thermal analysis (DMTA)). All products were subjected to a fire test carried out using a cone calorimeter (CC).

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“…Single flax fiber is formed by fibrils which are bonded together with weak pectin and lignin interphase. 10,15,19 Therefore, when the surface of the untreated flax fiber (Figure 8(a)) was investigated, a heterogeneous structure such as waxes, fats, hemicellulose and lignin was clearly seen on the surface. APPlJ caused increase of fibrillation (Figure 8(b)) due to the removal of impurities in the microstructure.…”

Section: Sem Resultsmentioning

confidence: 99%

“…By the help of molecular bond characterization, the functional groups in the structure of the solid, liquid, gas or solution organic compounds, whether the two compounds are the same, the state of the bonds in the structure, bonding sites and whether the structure is aromatic or aliphatic can be determined. 15 In this case, ATR-FITR was used to determine the differences of molecular bond of untreated and APPlJ-treated flax fibers. The IR spectra of the fibers were obtained using by an IR spectrometer (Perkin-Elmer spectrum BX, Perkin-Elmer Canada).…”

Section: Mechanical Characterizationmentioning

confidence: 99%

Effect of gas type and application distance on atmospheric pressure plasma jet-treated flax composites

Hüner

Güleç

Damar

2017

Journal of Reinforced Plastics and Composites

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This study reports on the effect of atmospheric pressure plasma jet treatment on the flax fiber and flax-reinforced epoxy. The atmospheric pressure plasma jet was carried out by using four different gasses and various application distance in the range of 30–40 mm. The treatments were investigated by means of contact angle, attenuated total reflectance–Fourier transform infrared spectroscopy, atomic force microscopy, scanning electron microscopy and mechanical tests. Depending on the application parameters, the rate of increase in water contact angle varied from 49% to 92%. While atomic force microscopy and scanning electron microscopy investigations exhibited changed surface morphology, FTIR presented interactions at the molecular level. Improvement in mechanical properties was obtained for all atmospheric pressure plasma jet applications, while the increase in tensile strength in the composite material reached 180%, and the increase in flexural strength was 140%. The atmospheric pressure plasma jet method, according to similar plasma applications, came to the forefront with the short processing time and the intensity of the effect it created.

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Infrared Spectroscopy of Fiber Flax

Cited by 20 publications

References 8 publications

On the Identification of Rayon/Viscose as a Major Fraction of Microplastics in the Marine Environment: Discrimination between Natural and Manmade Cellulosic Fibers Using Fourier Transform Infrared Spectroscopy

On the Identification of Rayon/Viscose as a Major Fraction of Microplastics in the Marine Environment: Discrimination between Natural and Manmade Cellulosic Fibers Using Fourier Transform Infrared Spectroscopy

Comparative Study of the Reinforcement Type Effect on the Thermomechanical Properties and Burning of Epoxy-Based Composites

Effect of gas type and application distance on atmospheric pressure plasma jet-treated flax composites

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