- citati u SCIndeksu: 0
- citati u CrossRef-u:0
- citati u Google Scholaru:[
 ]
- posete u poslednjih 30 dana:1
- preuzimanja u poslednjih 30 dana:0
|
|
|
2006, vol. 60, br. 1-2, str. 33-38
|
|
Uticaj pratećih komponenata vlakana konoplje na njihovu električnu otpornost
Influence of accompanying substances of hemp fibres on their electric resistance
Univerzitet u Beogradu, Tehnološko-metalurški fakultet, Katedra za tekstilno inženjerstvo
e-adresa: koka@tmf.bg.ac.yu
Sažetak
U cilju iznalaženja zadovoljavajućeg postupka modifikovanja vlakana konoplje u ovom radu su prikazane zavisnosti između hemijskog sastava, finoće i električne otpornosti. Prema proceduri za određivanje hemijskog sastava sukcesivno su uklanjane jedna po jedna prateća komponenta iz vlakana konoplje. Nakon svake etape odvojena je izvesna količina vlaknastog supstrata, a potom su izvršena merenja finoće i električne otpornosti, u cilju utvrđivanja uticaja svake komponente iz vlakana konoplje na pomenute karakteristike. Takođe je izvršena analiza uticaja eksperimentalnih uslova na finoću i električnu otpornost pri uobičajenom postupku modifikovanja vlakana konoplje zasnovanom na njihovom tretiranju rastvorom natrijumhidroksida.
Abstract
Hemp fibres belong to the group of natural, cellulose bast fibres. These fibres have exceptional properties such as: antimicrobial effect, absence of allergy effect, extraordinary sorption properties, good electro-physical properties (small static electricity in regard to other cellulose fibres) as well as high values of breaking strength (the natural fibre with the highest strength). However, hemp fibres have some defects: heterogeneous chemical composition, large quantity of accompanying substances (lignin pectins, waxes) and unsatisfactory fineness and evenness. It is possible to a great extent to eliminate or reduce, the defects of hemp fibres by of appropriate modification treatments. In order to determine the appropriate modification treatment of hemp fibres, the dependences between the chemical composition, fineness and electric resistance of hemp fibres were presented in this paper. In the experimental part of the paper, by the application of a procedure for the determination of the chemical composition, the accompanying supstances of hemp fibres were gradually removed. After each phase some fibrous substrates were separated. After that the fineness and electric resistance were determined. This experiment was conducted in order to define the influence of each component of hemp fibres on the fineness and electric resistance. In this paper, hemp fibres were modified by an aqueous solution of sodium hydroxide, under different conditions of modification. The influence of modification conditions on the fineness and electric resistance were studied.
|
|
|
|
Reference
|
|
 
|
Abdul-Karim, L.A., Rab, A., Polyanszky, E., Rusznak, I. (1995) Kinetics of delignification in kraft pulping of wheat straw and hemp. Tappi Journal, 78, 161-164
|
|
1 
|
Asanović, K.A. (2003) Doprinos metrologiji nekih elektrofizičkih svojstava tekstilnih materijala. Beograd: Tehnološko-metalurški fakultet / TMF, doktorska disertacija
|
|
|
Brazis, R., Czekalski, J., Kozakiewich, D., Michalak, M., Stasiak, M. (2000) Electromagnetic wave attenuation in Hemp-PAN fibre blends. Fibres and Textiles in Eastern Europe, 8, 35-38
|
|
|
Czekalski, J., Kozakiewich, D., Michalak, M., Stasiak, M. (2000) Ecological blended yarns: Hemp-PAN. Fibres and Textiles in Eastern Europe, 8, 22-23
|
|
|
Einfeldt, J., Mcigner, D., Kwasniewski, A. (2001) Polymerdynamics of cellulose and other polysaccharides in solid state-secondary dielectric relaxation processes. Prog. Polym. Sci, 26, 1419-1472
|
|
2
|
Garner, W. (1966) Textile laboratory manual. New York: American Elsevier, 92-93
|
|
3
|
Jovanović, R.S. (1989) Celulozna prirodna i hemijska vlakna. Beograd: Građevinska knjiga
|
|
3
|
Jovanović, R.S. (1981) Struktura i svojstva vlakana. Beograd: TMF, 45-63, 118-124
|
|
|
Milosavljević, S., i dr. (2004) Konoplja sirovina budućnosti. Beograd: TMF, Monografija, 8-29 173-182
|
|
1
|
Morton, W.E., Hearle, J.W.S. (1975) Phisical properties of textile fibres: The textile institute. London: Wiliam Heinemann
|
|
|
Mukherjee, A., Ganguly, R.K., Sur, D. (1993) Structural mechanics of jute: The effect of hemicellulose or lignin removal. J Text. Inst, 84, 348-353
|
|
|
Mussig, J., Martens, R., Harig, H. (1998) Hemp fibre as a textile resource. Textile Asia, May 39-50
|
|
|
Pejić, B. (2003) Modifikovanje vlakana konoplje za konvencionalna i nova područja primene. Beograd: TMF, Magistarski rad
|
|
|
Radovitskiy, V.R., Strel'tsov, B.N. (1967) Elektrodinamika tekstil'nyh volokon. Moskva: Legkaya industriya
|
|
|
Rahman, A.M., Siddiqueullah, M., Mian, J.A. (1996) The effect of the degree of substitution on some textile properties of jute and cotton fibres. J Text. Inst, 87, 259-264
|
|
|
Sedelnik, N. (1999) Effect of biological modification of technical flax fibres. Fibres and Textiles in Eastern Europe, 7, 19-21
|
|
1
|
Sjostrom, E. (1981) Wood chemistry: Fundamentals and applications. u: EERO SJOSTROM, London: Academic Press
|
|
1
|
Wang, H.M., Postle, R., Kessler, R.W., Kessler, W. (2003) Removing pectin and lignin during chemical processing of hemp for textile applications. Textile Res. J., 73, 664-669
|
|
3
|
Zhivetin, V.V., Ginzburg, L.N. (1998) Len na rubezhe XX i XXI vekov. Moskva: IPO Poligran
|
|
|
Zugenmaier, R. (2001) Conformation and packing of various crystalline cellulose fibers. Prog. Polym. Sci, 26, 1341-1417
|
|
|
|
|