Cottonisation of Decorticated Flax Fibres

Zimniewska, Małgorzata; Zbrowski, A.; Konczewicz, W.; Majcher, A.; Przybylski, J.; Matecki, K.; Wiśniewski, M.; Kicińska-Jakubowska, Anna; Mańkowski, Jerzy

doi:10.5604/01.3001.0010.1685

Cited by 15 publications

(7 citation statements)

References 10 publications

(9 reference statements)

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“…The process of extracting the flax fiber from straw included the stage of mechanical decortication, carried out in a technological line for decorticating of bast fibers for the textile industry [ 24 ]. Decortication, commonly used for flax or hemp, allows for dry mechanical extraction of fibers from plant stalks without the retting process.…”

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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“…First, the application of the retting process before decortication, when the main glutted substances such as pectin are destructed by bacteria/fungi/enzyme activity to ensure more effective mechanical fibre separation and division into small fibre complexes ( Figure 18 B). The second way to obtain good quality decorticated fibres is the application of degumming after the decortication process ( Figure 18 D) [ 116 ]. Degumming of the decorticated fibres can be conducted with the use of different methods, for example, by a biotechnological process where fibres are washed with 0.5% soda solution and treated with the pectinolytic strain Geobacillus thermoglucosidasius PB94A and then dried [ 117 ].…”

Section: Hemp Value Chain From Fibre To Yarnmentioning

confidence: 99%

Section: Hemp Value Chain From Fibre To Yarnmentioning

confidence: 99%

“…Degumming of the decorticated fibres can be conducted with the use of different methods, for example, by a biotechnological process where fibres are washed with 0.5% soda solution and treated with the pectinolytic strain Geobacillus thermoglucosidasius PB94A and then dried [117]. Another degumming method, with confirmed efficiency in dividing fibres into almost elementary ones, is the hydrodynamical process conditioned by a flow of water at 30 • C through the fibres formed into a reeled sliver, and then by moving in open degumming devices with water supported by ultrasound [116]. Whichever of the two combined methods of retting → decortication or decortication → degumming is used, it is necessary to conduct further mechanical processes, including carding, to tailor fibre the dimensions of needs determined by the final application, for example, cottonisation or woollenisation (Figure 18).…”

Section: Hemp Value Chain From Fibre To Yarnmentioning

confidence: 99%

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Hemp Fibre Properties and Processing Target Textile: A Review

Zimniewska

2022

Materials

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Over the last several decades, Cannabis sativa L. has become one of the most fashionable plants. To use the hemp potential for the development of a sustainable textile bio-product sector, it is necessary to learn about the effect of the processes creating hemp’s value chain on fibre properties. This review presents a multi-perspective approach to industrial hemp as a resource delivering textile fibres. This article extensively explores the current development of hemp fibre processes including methods of fibre extraction and processing and comprehensive fibre characteristics to indicate the challenges and opportunities regarding Cannabis sativa L. Presented statistics prove the increasing interest worldwide in hemp raw material and hemp-based bio-products. This article discusses the most relevant findings in terms of the effect of the retting processes on the composition of chemical fibres resulting in specific fibre properties. Methods of fibre extraction include dew retting, water retting, osmotic degumming, enzymatic retting, steam explosion and mechanical decortication to decompose pectin, lignin and hemicellulose to remove them from the stem with varying efficiency. This determines further processes and proves the diversity of ways to produce yarn by employing different spinning systems such as linen spinning, cotton and wool spinning technology with or without the use of the decortication process. The aim of this study is to provide knowledge for better understanding of the textile aspects of hemp fibres and their relationship to applied technological processes.

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“…Results of earlier studies on osmotic flax straw degumming became the basis for the development of a new method of hydrodynamic degumming of decorticated flax fiber. 20 It is obvious that the process of the decorticated fiber degumming must proceed in a different way, because the treated subject is not the stem containing flax fiber in its structure, where the osmosis phenomenon occurs in the process of water flow, but rather the decorated fiber aggregated into large complexes with stuck impurities, including shives. In this case, the osmosis phenomenon is of marginal importance, as it is a flow of water through the mass of the decorticated fiber that causes the hydrodynamic degumming as result of diffusion.…”

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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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Cottonisation of Decorticated Flax Fibres

Cited by 15 publications

References 10 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

Hemp Fibre Properties and Processing Target Textile: A Review

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

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