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J. B. Lechowicz

RAPID COMMUNICATION
Gelation in the non-stoichiometric step growth polymerization of two- and three-functional monomers (in English)

Polimery 2010, No 7/8, 594


DOI: dx.doi.org/10.14314/polimery.2010.594

Summary

A random step grow polymerization of two-functional (A2) and three-functional (B3) monomers was studied using a computer simulation method. The focus was on the effect of dividing the process into stages onto the weight-average polymerization degree (Pw) of the resulting polymeric product. It was found that by applying the procedure one can bring to gelation a system that does not form a network when polymerized in a single stage. Such an effect known previously as a result of changes in stoichiometry of a system, can also be observed when the ratio of monomers is the same throughout the whole process. Then, the gelation stems from the growth history of macromolecules.


Key words: step growth polymerization, two-functional monomer, three-functional monomer, gelation, polymer networks, Monte Carlo simulation


e-mail: jlechow@prz.edu.pl


J. B. Lechowicz

Gelation in the non-stoichiometric step growth polymerization of two- and three-functional monomers (in English)