Inessa Deyneka, Anatoliy Mychko, Galina Ripkayadda.icm.edu.pl/yadda/element/bwmeta1.element.agro-2fbec6b0-0367-4175-8c07-b3f18cfca...production of sewing factories, particularly those

ТЕKA. COMMISSION OF MOTORIZATION AND ENERGETICS IN AGRICULTURE – 2012, Vol. 12, No.3, 15-18

IDENTIFICATION OF VEGETABLE ORIGIN FIBERS FOR CHILDREN’S CLOTHES

Inessa Deyneka, Anatoliy Mychko, Galina Ripka

Volodymyr Dahl East-Ukrainian National University, Lugansk, Ukraine

S u m m a r y . The most competitive sewing goods of children’s assortment are those which are made of textile clothes such as cloth, yarn, thread which in definite amount include as components of vegetable fibers (cotton cloth, flax, hemp and so on). However, due to the development of industry producing chemical fibers (artificial, synthetic and so on) and their usage in native light industry they don’t meet the standard requirements of manufactured goods produced by Ukrainian factories. That’s why, to identify the vegetable origin fibers the research results of their structural peculiarities with the help of microscopy are given in this paper. K e y w o r d s : cotton, flax, hemp, jute fibers, microscopy.

INTRODUCTION

Nowadays the specialists consider that the most useful textile goods of children’s assortment are those which have only fibers of natural origin in their structure, namely 100% cotton, flax, hemp, i.e., maximum quantity.

Sewing goods made of above-mentioned textile materials meet the physiological –, hygienic, operational and economic requirements and they are also very competitive. We can confirm it in that case when, for example, we add flax in technologically justified proportions into cotton fibers while forming yarn. But having such artificial fibers of chemical origin such as viscose, polynomial, viscose modified with protein, viscose acetylating, cupric ammonia, acetate, two (die) and three acetate and so forth which are made on the basis of cellulose from different kinds of trees; the quantity of cotton clothes without any additions and impurities particularly for children’s assortment has greatly decreased. The reason is that the work of such enterprises is suspended or all manufacturing plants producing above-mentioned materials such as dyes (staff), finishing

agents, different kinds of finishing and are destroyed (for example, XXK, city of Kherson) and more over, the price for cotton is growing. First of all it resulted to the reduction of volume production of sewing factories, particularly those ones which produced clothes of different assortment for newborns, nursery, pre-school and junior school group children, the clothes which are made of native textile materials consisting of 100 per cent cotton fibers and painted with ecologically clean staff. Instead of it, ready-made goods and textile materials produced by other countries (for example, China, Turkey, Italy and India) have appeared, but due to their nature of fibers and the difference of certification documents, practically it’s impossible to refer them to cotton assortment or to such one which meets the requirements of the standards for mentioned customers’ group. This fact and such a situation can be explained by the lack of laboratories and specialists dealing with the identification of (both qualitative and quantitative) fiber materials and every day goods; the problem arose and the actuality of which is obvious.

OBJECTS AND PROBLEMS

The purpose of the paper is scientific-experimental researchers concerning the fibers of vegetable origin in textile materials with the help of a microscope. The object of the research is the identification process of vegetable origin fibers with the help of microscopy. The subject of the research is fibers of vegetable origin.

16 INESSA DEYNEKA, ANATOLIY MYCHKO, GALINA RIPKA

RESEARCH ANALYSIS

It is known [1-14] that the fibers of vegetable origin (FVO) such as cotton, flax, hemp, jute, knave and so on are formed by one or a complex of natural cells of a complicated chemical compound consisting of celluloid, pectin, lignin, nitrogen, fatty- wax substances and also of water and pigments. The most important component of fibers of vegetable origin among the enumerated ingredients is considered to be cellulose. Cotton has 97 % of it, flax has 79 % of cellulose, and jute has 71 % of it. Depending on its quantity fibers of vegetable origin are characterized by different physical-mechanical, physiological- hygienic, chemical, technical-hygienic and then by consuming indexces. In general, cellulose is a linear highly- polymeric compound which is referred to the group of higher hydrocarbons and which is built of elementary an- hydro- D – glucose links. Empirical equation of cellulose is (C6H10O5)n, and the structural one has the following kind:

MAIN RESULTS OF THE RESEARCH

It is stated that depending on the vegetarian period (90 to200days) the amount of cellulose and other components is constantly increased what happens to the improvement of its super molecular structure and then to the improvement of its physical-mechanical and hygienic properties That’s why, to estimate the suitability of cotton fibers such index as puberty degree is used.

Cotton fibers are divided into 11 groups of puberty (puberty coefficients); namely, from 0 till 5 points at 0,5 interval (fig. 1). Overripe fibbers are estimated by 4,5 till 5,0 points, while not fully ripe ones are estimated by 0 till 1,0 point sand those that can be used for the technological process (making yarn, dying) must have the puberty coefficient from 2,0 till 3,5 points.

Taped shape and length winding are the main features of cotton fibers during their identification with the help of microscope. Besides, the main characteristic feature of cotton ripe fiber is its cross section which has a volumetric circular shape deformed on a plane.

Fig. 1. Shows the active standards to estimate the puberty degree of cotton fibers using a laboratory (microscopic) method during the process of their vegetation

Textile linen made of cotton fibers is mercerized, that is, processed by sodium hydroxide solution using special machines (till 18% concentration) at temperature not more than +25 degrees Centigrade. Under the influence of a special reagent chemical, physical-chemical and structural changes of cellulose and then of fibers are taking place. So, chemical reactions carry to the formation of alkaline cellulose, physical-chemical ones carry to the intensive fiber swelling and changing of cellulose properties, increasing its cross section (diameter) due to the shrinkage [2,3]. As for the structural changes, they occur at a super molecular level and carry to the changing of elementary link arrangement in macro- molecular cellulose. Such even very short alkali contact with cotton fiber causes not only the changing of its longitudinal shape but also a lateral shearing; microscopic bunch researches of mercerized and non-mercerized samples testify it (fig. 2).

a b

Fig. 2. Lateral shearing microscopy of cotton fiber bunch: a – non- mercerized; b – mercerized

Such fibers as flax, hemp, jute and other fibers belong to the fibers of vegetable origin but flax and hemp are the most common in Ukraine. Mentioned fibers refer to the ”basted” class and make the sufficient part of raw materials for textile industry thanks to its physiological-hygienic, mechanical and operational features. Elementary fibers gathered in basted bunches are located in a pare chemical zone of stalk having the length from

IDENTIFICATION OF VEGETABLE ORIGIN FIBERS FOR CHILDREN’S CLOTHES 17

15 till 125 cm and the thickness from 15 till 18 microns [2].

General longitudinal view of elementary basted fibers under the microscope doesn’t greatly differ (fig.3).

a

b

Fig. 3. General longitudinal view of elementary fiber under a microscope: a – flax; b – jute

But their lateral shearing says that there is a difference in the structure particularly in a fiber zone which to our mind is the most compact formed in flax and jute stalks (fig.4).

a b

c d

Fig.4. Lateral shearing microscopy of fiber stalks of vegetable origin: a – flax; b – hemp; c – ramie; d – jute [4]

Mentioned fiber formations are located round the plant circle in pare chemical zone and consist of a number of single elementary fibers joined with each other so called by middle plates; the microscopy of flax stalk bunch testifies about it best of all (fig. 5).

Fig. 5. Lateral shearing microscopy of flax fiber bunch [2]

CONCLUSIONS

So, with the help of microscopic analyze method we have a practical possibility to find fibers of vegetable origin among many others. They are cotton, flax, hemp, jute because every mentioned type is different from others by their structure – morphological composition, appearance, the cellulose quantity and non-cellulose components (wax, protein, ash, lignin, pectin and others) and by their properties. It gives the possibility to identify fibers of vegetable origin according to their attitude and influence to the chemical solutions of acid, alkaline and neutral nature particularly to copper ammonia compound [Cu(NH3)4]OH2.

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ИДЕНТИФИКАЦИЯ ВОЛОКОН РАСТИТЕЛЬНОГО ПРОИСХОЖДЕНИЯ

ТКАНЕЙ ДЛЯ ДЕТСКОЙ ОДЕЖДЫ

Инесса Дейнека, Анатолий Мычко, Галина Репка

Аннотация. Наиболее конкурентоспособными швейными изделиями детского ассортимента являются те, что изготовлены из текстильных материалов (ткань, пряжа, нити), в состав которых в определенном количестве включены волокна растительного происхождения (хлопчатобумажные, льняные, конопляные и т.п.). Но, в связи с развитием индустрии получения химических волокон (искусственных, синтетических) и их использование в отечественной легкой промышленности приводит к несоответствию требованиям стандартов произведенных товаров на украинских предприятиях. Поэтому, для идентификации волокон растительного происхождения, в статье приведены результаты исследования их структурных особенностей с помощью микроскопии. Ключевые слова : хлопчатобумажные, льняные, конопляные, джутовые волокна, микроскопия