ASSESSMENT OF OILSEED FLAX FIBER SUITABILITY FOR VARIOUS PRODUCT GROUPS

Abstract

Aim. Defining the scope of oilseed flax fiber application on the basis of using the structural characteristics of flax fiber obtained by modification, with the increasing of elementarization degree of flax fiber technical complexes by means of treating flax straw by composite chemical agents in the process of fiber separation.

Methods of study. In the research the method of light microscopy was used (by Arkhangelskyi V.A.), processing of the results was performed by methods of mathematical statistics.

Results. It was found that the further processing of flax straw by composite chemical agents on the basis of carbamide phosphoric acid and oxyethylated nonylphenol AF 9-10 at a concentration of 0,2 g / l increases the elementaristion degree of oilseed flax fibers of all investigated varieties by almost 2 times. For test samples the criteria were calculated for assessing the degree of separation of complex flax fibers by average number of filaments in a bundle on the cross fiber microsection (iav) and by the abstract rate of separation (Сs). Fibers of Yuzhnaya noch sort appeared to be the most elementarized – iav = 6; Сs = 0,180.

According to the classification of modified flax fibers by functional purpose on the basis of morphological structure and geometrical properties of fibers, fibers of such varieties as Iceberg and Yuzhnaya noch, with the average number of filaments in a bundle on the cross fiber microsection iav = 6-8 and separation rate Сs = 0,134-0,180, as well as linear density of from 4 to 5 tex, may be recommended for processing in blends with wool according to wool spinning

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Товарознавчий вісник. – 2017. – Випуск 10.

technology in order to manufacture a mixed yarn for clothing and household product range. Fibres of such varieties as Vera, Debut, Civica, Orpheus, having their value of iav = 8 and higher; and Cs = 0,130 and lower, according to the requirements for classification, can be recommended for the production of technical nonwovens of technical (geotextiles) and household (furniture fabric) use. Having further processed obtained fibers of all studied varieties on modernized KPAL line, it becomes possible to obtain fiber with such properties: iav = 2-3; Сs = 0,287-0,500; linear density of 0,20-0,90 tex, suitable for processing in a cotton blend.

Scientific novelty. The hypothesis of obtaining oilseed flax fibers was justified, based on separation of fiber technical complexes by changing the morphological structure and chemical constitution of flax fiber under the action of novel compositions of chemicals in the process of fiber separation.

Practical significance. The developed technology for producing oilseed flax fiber with intensive separation of technical complexes of fibers under the influence of chemical compositions, and by optimizing operating parameters of manufacturing equipment will give the opportunity to obtain a fibrous product with a wide range of quality indicators, and the use of criteria based on morphological structure and geometric properties of fiber will help to determine their suitability for use for manufacturing products of different product groups.