Physical phenomena occurring in the process of physical–mechanical degumming of fiber from flax straw

Konczewicz, W.

doi:10.1177/0040517514545263

Cited by 10 publications

(9 citation statements)

References 4 publications

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“…The osmotic degumming method is based on natural physical laws: water diffusion, osmosis and osmotic pressure to obtain the higher quality of fibers. The process was supported by ultrasound treatment [ 26 , 27 ].…”

Section: Methodsmentioning

confidence: 99%

Antioxidant Potential of Hemp and Flax Fibers Depending on Their Chemical Composition

et al. 2018

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Flax and hemp fibers are known as textile raw materials with pro-health properties. This paper presents results of research aimed at investigating the antioxidant activity of the fibers in order to explain a mechanism for the favorable influence of textiles made of these fibers when in contact with human skin. The study presents a new approach in evaluation of textile fibers in terms of their inherent pro-health properties. Antioxidant properties of flax and hemp fibers were tested with the use of FRAP and DPPH methods. The content of phenolic acids: syringic, sinapinic, p-coumaric and ferulic acid was determined with the use of HPLC. The results proved that the antioxidant activity of the tested fibers depends on a type and variety of fibrous plants, a method of fiber extraction and subsequent stages of preliminary processing of the fibers. Both decorticated flax and hemp fibers showed higher antioxidant activity in comparison to the fibers obtained with other extraction methods, while decorticated flax of different varieties presented the highest value of the FRAP. Wet methods of fiber extraction and processing caused reduction of phenolic acids content and significantly lower values of the FRAP and DPPH.

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Section: Methodsmentioning

confidence: 99%

Antioxidant Potential of Hemp and Flax Fibers Depending on Their Chemical Composition

et al. 2018

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“…In order to obtain high quality cottonized flax fibres from low quality decorticated fibres, a physical degumming method in a water medium was applied. The degumming process of fibrous plants is known [11], based on using physical phenomena such as the diffusion and osmosis that occur in fibre in contact with water. The solution presented in this paper involved the physical degumming of the fibre in water by the action of forced water flow, temperature, ultrasounds and by the hydrodynamic action of water on the fibre.…”

Section: Resultsmentioning

confidence: 99%

Cottonisation of Decorticated Flax Fibres

Zimniewska

Zbrowski

Konczewicz

et al. 2017

Fibres and Textiles in Eastern Europe

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The commonly used flax process of decortication allows the mechanical extraction of fibre from plant stems without prior retting. The one-type fibre obtained in this process is characterised by very low quality, as it is poorly divided, has high linear mass and high amounts of impurities. This paper presents a description of a newly developed method of obtaining high quality flax cottonized fibre from low quality decorticated fibre by application of a wet degumming process for fibre. The experiment involved studying the parameters of flax fibres after each step of the technological process i.e. after decortication, wet degumming and final mechanical cottonisation. The study covered tests of the following fiber parameters: linear mass, length, impurities, chemical composition as well as thermogravimetric analysis, Fourier transform infrared spectroscopy analysis and scanning electron microscopy images. The results confirm the efficiency of the method applied for obtaining high quality fibre from decorticated flax fibre.

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“…[16][17][18] The mechanism of the flax straw degumming process using the osmosis phenomenon was explained and described in 2015. 19 The research focused on understanding the movement of masses using the principles of fluid mechanics that occurs in the process of osmotic degumming of fibrous plants.…”

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confidence: 99%

Influence of the hydrodynamic degumming process on the quality of decorticated flax fibers

Zimniewska

Różańska

Kicińska-Jakubowska

et al. 2021

Textile Research Journal

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The study explored the impact of the hydrodynamic degumming process applied for decorticated monomorphic flax on fiber quality. The experiment was designed as the first stage of research leading to the development of a method for decorticated flax fiber elementarization and cottonization; in particular, effectively dividing the fiber bundles to ensure low linear density and reducing impurities in the content, to make the fibers suitable for cotton spinning systems. The degumming process of the decorticated fibers covered hydrodynamic disposal of the gluing substances, mainly pectins from the fibers, with use of a specially designed lab-scale Model Device for Physical Degumming of the Flax Fibers. The degummed fibers were tested for linear density, length, impurity content and chemical composition by thermogravimetric analysis combined with the analysis of evolved gases (Fourier transform infrared spectroscopy) and analysis of images of fiber cross-sections and longitudinal views from a scanning electron microscope. The study outcomes allowed us to determine the optimal parameters of the degumming process applied for decorticated flax fibers, in which the obtained fibers were of the highest quality. It was found that the optimal parameters of the process were a bath temperature of 30°C and a degumming process duration of 24 hours. These lab-scale process conditions were used in further work on the degumming process of flax fiber carried out on a semi-technical scale, followed by a mechanical cottonization of the fiber, at the final stage of the technological chain.

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Physical phenomena occurring in the process of physical–mechanical degumming of fiber from flax straw

Cited by 10 publications

References 4 publications

Antioxidant Potential of Hemp and Flax Fibers Depending on Their Chemical Composition

Antioxidant Potential of Hemp and Flax Fibers Depending on Their Chemical Composition

Cottonisation of Decorticated Flax Fibres

Influence of the hydrodynamic degumming process on the quality of decorticated flax fibers

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