Abstract
The arranged contribution of macromolecules, called also the crystalline ratio, in polyamide fibres has not yet been studied by magnetic static methods. i.e. by the magnetic susceptibility perpendicular to the axis of fibres, and by magnetic anisotropy. In the present paper a correlation is shown to exist between the above-mentioned magnetic parameters and the arranged contribution of macromolecules in the fibres of polyamide PA-6. The magnetic susceptibility increases with the increase of the arranged contribution, determined from the density, while the magnetic anisotropy decreases. The ratios of high-frequency (h.f.) rigid and soft components were determined from the recordings of nuclear magnetic resonance (NMR) by the method of linear anamorphosis. It was found that the coefficient of the h.f. rigidity characterizing the increase of the h.f. rigid component in PA-6 with the increase of the arranged contribution is represented by a line which in the range of 30 to 50% gives a magnetic calibration curve for the determination of the arranged contribution from the magnetic measurements.
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References
Rákoš M., Šimo R., Varga Z.: Czech. J. Phys.B 16 (1966), 167.
McMahon P. E.: Polymer Letters4 (1966), 75.
Statton W. O., Du Pont E. I.: American Dyestuff Rep.26 (1965), 26.
Fuschillo N., Sauer J. A.: Bull. Am. Phys. Soc.2 (1957), 125.
Rákoš M., Šimo R., Varga Z.: Czech. J. Phys.B 16 (1966), 112.
Rákoš M.: Základy meraní slabomagnetických látok (Fundamentals of the Measurements of Weakly Magnetic Substances). SAV Publishing House, Bratislava 1965, p. 155.
Rákoš M.: Čs. čas. fys.A 12 (1962), 205.
Rákoš M.: Exp. Techn. der Physik15 (1967), in press.
Tichomirova M. M., Vojevodskij V. V.: Optika i spektroskopija7 (1959), 829.
Slichter W. P., Mc Call D. W.: J. Polymer Sci.25 (1957), 230.
Fuschillo N., Rhian E., Sauer J. A.: J. Polym. Sci.25 (1957), 381.
Nejman M. B. et al.: Vysokomolek. sojed.5 (1963), 1706.
Simo R.: Príprava štrukturálne oblúčkovaných PA-6 vláken (The Preparation of Structurally Arched PA-6 Fibres). Res. Rep., Res. Inst. Chem. Fibres (VÚCHV), Svit 1967.
Šimo R.: Využitie metódy DTA pri sledovani PP a PA-6 (Utilization of the DTA-Method for the Study of PP and AP-6). Res. Rep., Res. Inst. Chem. Fibres (VÚCHV), Svit 1962.
Šimo R.: Chem. vlákna12 (1962), 101.
Diačik I., Šimo R.: Lecture, Budapest 1967.
Group of authors: Základný prieskum nových výrob a chemických vláken na bázi celulózy a syntetických polymerov (Basic Research of New Products and Chemical Fibres on the Basis of Cellulose and Synthetic Polymers). Res. Rep., Res. Inst. Chem. Fibres (VÚCHV), Svit 1966.
Masazaku I.: J. Appl. Polymer Sci. PartA 1 (1963), 2697.
Dole M., Wunderlich B.: J. Polymer Sci.24 (1957), 139.
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The authors thanks I. Hympánová for help in the NMR measurements.
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Rákoš, M., Varga, Z. & Šimo, R. Magnetic study of changes in the arranged contribution in polyamide fibres. Czech J Phys 18, 1456–1462 (1968). https://doi.org/10.1007/BF01691361
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DOI: https://doi.org/10.1007/BF01691361