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P. Król



Mathematical modeling of step-addition polymerization processes

Polimery 1995, No 9, 493


DOI: dx.doi.org/10.14314/polimery.1995.493

Summary

The importance of mathematical modeling for polymerization processes has been discussed and Author's kinetic models developed for step growth polyaddition processes leading to linear polyurethanes have been characterized. Models involving the effect of the chain length of urethane oligomers on their chemical reactivity were used to simulate the polyurethane synthesis and they allowed to relate the molecular weight distribution of polyurethanes to reaction conditions. The reaction of 2,4-TDI with 1,4-butanediol was used to verify the models experimentally (GPC method). The model based on the theory of collisions and on a relation of the chemical reactivity of the oligomers to molecular weight gave calculated data most consistent with experimental results. Solution polyaddition proceeding in a constant-volume batch reactor with ideal intermixing of components Server to verify the models.


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