Abstract
Nylon 6 fibres were annealed in the temperatures range 80–185 °C for times from 1–10 h, and the density of the annealed fibres was measured by a system based on the theory of vibrating strings. The fibre diameter was also determined, using the laser forward diffraction technique. Differential thermal analysis (DTA) measurements were used to determine the glass transition temperature and the melting point of nylon 6. Some annealed samples were subjected to X-ray diffraction to clarify the variation of crystallinity with the annealing conditions. The mechanism of structural variations for nylon 6 fibres due to the annealing process is discussed, and structural details for crystalline and non-crystalline phases of a polymer are suggested. The behaviour of the number of oriented chains, number of crystallized nuclei, relative amount of recrystallized material and the shrinkage ratio with annealing time is proposed to explain the thermal structural variations.
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References
R. J. Samuels, “Structured Polymer Properties” (Wiley, New York, London, 1974) pp. 20, 219.
I. I. Perepechk, “An Introduction to Polymer Physics” (Mir, Moscow, 1981) p. 42.
G. M. Brauer and E. Horowitz, in “Analytical Chemistry of Polymers III”, edited by G. M. Kline (Interscience, New York, 1962) Ch. 1.
W. O. Statton, J. Polym. Sci. A-2 10 (1972) 1587.
F. Decandia and V. Vittoria, J. Poly. Sci. Phys. Ed. 23 (1985) 1217.
G. William, P. Perkins and S. R. Porter, J. Mater. Sci. 12 (1977) 2355.
I. M. Fouda and M. M. El-Tonsy, ibid. 25 (1990) 4752.
A. E. Zachariades and S. R. Porter, “The Strength and Stiffness of Polymers” (Marcel Dekker, New York, Basel, 1983) p. 121.
W. Haward, J. R. Starkweather, E. M. George, H. E. John, R. M. Thomas and B. E. Richard, J. Polym. Sci. XXI (1956) 189.
N. Subrahmanyam and Brij Lal, “A Textbook of Sound”, 2nd Edn (Vikas, New Delhi, 1979) p. 143.
S. M. Curry and A. L. Schawlow, Amer. J. Phys. 42 (1974) 12.
I. M. Fouda, T. El-Dessouki and K. A. El-Farahaty, Ind. J. Tex. Res. 13 (1988) 11.
I. M. Fouda, M. M. El-Tonsy and A. H. Oraby, J. Mater. Sci. 25 (1990) 1416.
D. C. Bassett, “Principles of Polymer Morphology” (Cambridge University Press, Cambridge, 1981) p. 124.
D. J. Williams, “Polymer Science and Engineering” (Prentice-Hall, New Jersey, 1971) p. 188.
P. Polukhin, S. Gorelik and V. Vorontsov, “Physical Principles of Plastic Deformation” (Mir, Moscow, 1983) p. 275.
B. K. Vainshtein, “Diffraction of X-rays by Chain Molecules” (Elsevier, New York, 1966) p. 383.
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Fouda, I.M., El-Tonsy, M.M. & Shaban, A.M. Evaluation of the structural behaviour of annealed nylon 6 fibres from density measurements. J Mater Sci 26, 5085–5092 (1991). https://doi.org/10.1007/BF00549896
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DOI: https://doi.org/10.1007/BF00549896