Chemical nucleation, a new concept applied to the mechanism of action of organic acid salts on the crystallization of polyethylene terephthalate and bisphenol-A polycarbonate
(1984) Polymer — Vol. 25, n° 6, p. 835-844 (1984)
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- Authors
Bailly, Christian 
- Abstract
- Bisphenol-A-polycarbonate (PC) and polyethylene terephthalate (PETP) systems containing different concentrations of sodium /b o/-chlorobenzoate (SOCB) as crystallization promoters have been studied by DSC, IR and GPC. It is shown that the time and temperature of mixing of the salt with the polymer considerably affects the crystallization rates. GPC and IR show that a chemical reaction occurs during the mixing process between the salt and the ester links of the macromolecules. This reaction produces ionic end-groups which are responsible for the acceleration of the crystallization rate. This phenomenon is called `chemical nucleation'. The same behaviour is observed also with other alkali metal salts derived from aromatic carboxylic acids.
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Citations
Legras, R., Bailly, C., Daumerie, M., Dekoninck, J. M., Mercier, J. P., Zichy, V., & Nield, E. (1984). Chemical nucleation, a new concept applied to the mechanism of action of organic acid salts on the crystallization of polyethylene terephthalate and bisphenol-A polycarbonate. Polymer, 25(6), 835-844. https://doi.org/10.1016/0032-3861(84)90015-6 (Original work published 1984)