Interpretation of molecular structure and kinetics in melt condensation of A2 oligomers, B3 monomers, and monofunctional reagents

C. Oguz, S. Unal, Timothy Edward Long, M. A. Gallivan*

*この研究の対応する著者

研究成果: Article査読

27 被引用数 (Scopus)

抄録

This article applies kinetic Monte Carlo simulations to interpret experimental measurements in the polymerization of hyperbranched poly(ether esters)s in a melt condensation of A2 oligomers and B3 monomers. Building on the analytical modeling of Flory and Stockmayer, additional effects of cycle formation, unequal reactivities, and end-capping reagents are added into the simulations to describe A2 + B 3 polymerization in the absence of a solvent. The experimental data have been published separately,1 and here it is compared to the model predictions in order to quantitatively assess whether the data are consistent with these models. On the basis of the modeling, we conclude that cycle formation is negligible, suppression of the third B group is insignificant, and the mobility of the free B3 monomer leads to enhancement of its reaction rate. The addition of the monofunctional end-capping reagents does not necessarily lead to suppression of branching in the A2 + B 3 system and depends sensitively on the stoichiometry of the reactants.

本文言語English
ページ(範囲)6529-6534
ページ数6
ジャーナルMacromolecules
40
18
DOI
出版ステータスPublished - 2007 9 4
外部発表はい

ASJC Scopus subject areas

  • 材料化学

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