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A new approach in modeling template polymerization
Author(s) -
Semino Daniele,
Polacco Giovanni,
Ricciardi Alessandra
Publication year - 1997
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.11787
Subject(s) - polymerization , materials science , kinetics , molecule , kinetic energy , work (physics) , polymer chemistry , thermodynamics , chemistry , polymer , organic chemistry , physics , composite material , quantum mechanics
This work attempts to describe the peculiar kinetics that take place in template polymerization which proceeds according to the zip ‐mechanism. The unique situation of the molecules adsorbed on a template chain, which, with respect to the template propagation and termination reactions, are bound to react with the molecules that are positioned on their sides, is characterized. The definition of different species according both to their nature and to the nature of their neighbors leads to the construction of a kinetic model that, despite its analytical complexity, is characterized by a quite limited number of unknown kinetic constants. The model is developed by deriving the dynamic equations that describe the conversion versus time behavior all along the course of the reaction. The model predictions are compared with experimental data referring to the radical polymerization of sodium methacrylate (MAA · Na) in the presence of poly(allylamine) hydrochloride (PAAm · HCl). The good agreement confirms the validity of the model. Moreover, the model offers a significant contribution into understanding the peculiarities of template polymerization systems.