Abstract
The effect of the functionality of a branch unit and its concentration on gelation during polyesterification were examined. The measured gel-points were compared with the values predicted by the Flory and Stockmayer theories of gelation. Considerable deviations from the theories were found for the system where equal reactivity of the functional groups was ensured.
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P. J. Flory, J. Phys. Chem., 46, 132 (1942).
W. H. Stockmayer, J. Chem. Phys., 12, 125 (1944).
F. P. Price, J. H. Gibbs, and B. H. Zimm, J. Phys. Chem., 62, 972 (1958).
R. F. T. Stepto, Faraday Discuss. Chem., 57, 69 (1974).
W. H. Stockmayer, L. L. Weil, “Advancing Fronts in Chemistry,” Reinhold, New York, 1945, Chapter IV.
R. W. Kilb, J. Phys. Chem., 62, 969 (1958).
H. L. Frisch, Paper presented to The American Chemical Society, 128th Meeting Polymer Div., Minneapolis, 1955.
J. L. Stanford and R. F. T. Stepto, J. Chem. Soc., Faraday Trans. 1 (1975).
M. Gordon, Proc. R. Soc. London, Ser. A, 268, 240 (1962).
M. Gordon and W. B. Temple, Makromol. Chem., 160, 263 (1972).
M. Gordon and G. R. Scantlebury, Proc. R. Soc. London, Ser. A, 292, 380 (1966).
W. B. Temple, Macromol. Chem., 160, 277 (1972).
D. M. French and R. A. H. Strecker, J. Macromol. Sci., Chem., A5(S), 893 (1971).
D. R. Miller, E. M. Valles, and C. W. Macosko, Polym. Eng. Sci., 19, 272 (1979).
A. Kahn, J. Polym. Sci., 9, 69 (1952).
A. Kahn, J. Polym. Sci., 11, 424 (1953).
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Ahmed, Z., Stepto, R. Effect of Monomer Functionality and Concentration on Gelation in Non-Linear Random Polymerization. Polym J 14, 767–772 (1982). https://doi.org/10.1295/polymj.14.767
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DOI: https://doi.org/10.1295/polymj.14.767
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