Enhanced spin capturing polymerization: Numerical investigation of mechanism |
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| Authors: | Sergey V Nikitin Dmitriy A Parkhomenko Mariya V Edeleva Elena G Bagryanskaya |
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| Institution: | 1. N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, 9, Novosibirsk, Russia;2. Novosibirsk State University, Novosibirsk, Russia |
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| Abstract: | Simulation on the kinetic scheme of enhanced spin capturing polymerizations (ESCP) were performed to reveal the influence of different parameters, e.g., initiation rate, spin capturing and side reactions on the properties (the monomer conversion, degree of polymerization, polydispersity index, and the fraction of “living” chains) of polymer obtained. The kinetic scheme of ESCP was solved numerically as well as the method of statistical moments of molecular weight distribution was applied to get some numerical expressions for analysis. The simulations showed that fast initiation rate can lead to decrease of living fraction and broadening of molecular weight distribution. Whereas high rate of spin capturing makes the polymer chains shorter but increases living character. And side reactions always decrease livingness of the polymer obtained. Finally in the case of absence of side reaction we were able to formulate criteria for formation of polymer with target molecular weight and quota of living chains via ESCP process. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015 , 53, 2546–2556 |
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| Keywords: | calculations degree of polymerization (DP) enhanced spin capturing polymerizations kinetics molecular weight distribution nitrone simulations |
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