Thermal properties,induction period,interfacial energy and nucleation parameters of solution grown benzophenone |
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| Authors: | G. Madhurambal P. Ramasamy P. AnbuSrinivasan S. C. Mojumdar |
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| Affiliation: | (1) Chemical and Technological Research Center, Food Engineering, Tourism and Environmental Protection Faculty ‘Aurel Vlaicu’ University of Arad, E. Drӑgoi 2, Arad, 310330, Romania;(2) Faculty of Chemistry, University of Bucharest, Bd. Elisabeta 4-12, Bucharest, Romania |
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| Abstract: | The kinetic parameters (reaction order, n, activation energy, E, pre-exponential factor, A, constant rate, k) for the dehydration step due to elimination of osmotic water and hydrogen-bounded water with the carboxylic groups, and for the anhydrifying step owing to the dehydration of two neighboring (-COOH) groups, were determined under non-isothermal conditions for some carboxylic resins with acrylic-divinylbenzene (DVB) matrix. The kinetic parameters were evaluated by means of isoconversional methods from (TG/DTG) thermal analysis data. The results show a dependence of the apparent kinetic parameters on the cross-linking degree, granulation, gel/macroporous matrix nature, exchange capacity and heating rate. |
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| Keywords: | acrylic ion-exchange resins cationites dehydration non-isothermal kinetic parameters TG/DTG thermal analysis |
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