Journal
COMPUTATIONAL AND THEORETICAL CHEMISTRY
Volume 977, Issue 1-3, Pages 168-180Publisher
ELSEVIER
DOI: 10.1016/j.comptc.2011.09.022
Keywords
Density functional theory; Epoxy resin; Tryptophan; DMOL3; Curing
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The mechanism of the curing reaction between ethylene oxide as a typical epoxy function and tryptophan as an environmentally friendly curing agent was investigated by density functional theory (OFT). A transition state was identified in order to determine the activation energy for a specific reaction. The reaction energy (Delta N) for different steps was calculated after optimization of the reactants and products. The Mulliken and ESP-fitted charges, molecular orbitals, and Fukui indices (f(-)) were used to determine the reactivity of a specific atom or site. The reaction was classified in four main stages with the reaction energy of -19.71 kcal mol(-1). (C) 2011 Elsevier B.V. All rights reserved.
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