Abstract
Polymorphic behavior of palm oil crystals was studied by DSC isothermal analysis and microscopic observation. Different crystal forms developed specific spherulites depending on the degree of super-cooling from the melt. The A-form crystal was capable of forming a dotted spherulite and the B-form crystal of forming a dendritic spherulite. Experimental results of B form crystallization studied by the DSC and a microscope under kinetic conditions were evaluated using Avarami’s theory, since the behavior of the oil during crystallization related well to that of high polymers. The crystallization process was divided into nucleation and crystal-growth phases to facilitate a theoretical treatment similar to that of high polymers, providing crystals possessing overall structural regularity.
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References
Hannewijk, J., and A.J. Haighton, JAOCS 35:3457 (1958).
Merker, D.R., L.C. Brown, and L.H. Wiedermann, Ibid. 35:130 (1958).
Wilton, I., “Fat and Oil Chemistry,” Proceedings of the 4th. Scandinavian Symposium of Fats and Oils, p. 95 (1966).
Hoerr, C.W., and F.R. Paulicka, JAOCS 45:793 (1968).
Chapman, G.M., Ibid. 48:824 (1971).
Luddy, F.E., J.W. Hampson, S.F. Herb, and H.L. Rothbart, Ibid. 50:240(1973).
Rossell, J.B., Ibid. 52:505 (1975).
Hagemann, J.W., and W.H. Tallent, Ibid. 52:204 (1975).
Lovegren. N.V., H.S. Gray, and R.O. Feuge, Ibid. 53:83 (1976).
Dafler, J.R., Ibid. 54:249 (1977).
Sone, T., J. Phys. Soc. Jpn. 16:961 (1961).
Loeser, E., Fette Seif. Anstrichm. 73:262 (1972).
Larsson, K., Acta Chem. Scand. 20:2255 (1966).
Larsson, K., Chem. Scr. 1:21 (1971).
Larsson, K., Fette Seif. Anstrichm. 74:136 (1972).
Hoerr, C.W., JAOCS 37:539 (1960).
Avrami, M., J. Chem. Phys. 7:1103 (1939).
Avrami, M., Ibid. 8:212 (1940).
Avrami, M., Ibid. 9:177 (1941).
Evans, U.R., Trans. Faraday Soc. 41:365 (1945).
Volmer, M., and A. Weber, Z. Phys. Chem. 119:227 (1925).
Mandelkern, L., F.A. Quinn, and P.J. Flory, J. Appl. Phys. 25:830 (1954).
Mandelkern, L., Chem. Revs. 56:903 (1956).
Takayanagi, M., T. Yamashita, and K. Saheki, J. Ind. Chem. Jpn. 60:299 (1957).
Takayanagi, M., and S. Kuriyama, Ibid. 57:873 (1954).
Takayanagi, M., M. Nakao, and K. Machida, Ibid. 59:549 (1956).
Takayanagi, M., and T. Yamashita, Ibid. 60:456 (1957).
Takayanagi, M., and T. Kusumoto, Ibid. 62:587 (1959).
Barnes, W.J., W.G. Luetzel, and F.P. Price, J. Phys. Chem. 65:1742 (1961).
Kamide, K., and K. Fujii, Polym. Chem. Jpn. 25:155 (1968).
Kamide K., Chem. High Polymers Jpn. 24:259 (1967).
“Official and Tentative Methods of the American Oil Chemists’ Society,” Vol. I, AOCS, Champaign, IL, 1964, (revised 1975), Method Ce 1-62.
Sumi, K., and Y. Abe, J. Jpn. Oil Chem. Soc. 14:606 (1965).
Persmark, U., K.A. Melin, and P.O. Stahl, Riv. Ital. Del. Sos. Gra. LIII:301 (1976).
Flory, P.J., and A.D. Mclntyre, J. Polym. Sci. 18:592 (1955).
Falkai, B.V., Makromol. Chem. 41:86 (1960).
Jenckel, E., and H. Wilsing, Z. Elektrochem. Angew. Physik Chem. 53:4 (1949).
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Kawamura, K. The DSC thermal analysis of crystallization behavior in palm oil. J Am Oil Chem Soc 56, 753–758 (1979). https://doi.org/10.1007/BF02663056
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DOI: https://doi.org/10.1007/BF02663056