Synthesis of Linear Polyurethanes. II. Mathematical Model

MARA POLO; PESOA, JUAN; VERÓNICA NICOLAU; MARISA SPONTÓN; DIANA ESTENOZ; GREGORIO MEIRA

Simposio; XII Simposio Argentino de Polímeros 2017 (SAP); 2017

In this work, a novel polymerization model is presented that estimates the detailed molecular structure of the evolving reaction mixture. Standardhypotheses for linear step polymerizations were adopted, i.e.: a) reactivities of functional groups independent of chain length; and b) absence of intramolecular or secondary reactions. The mathematical model predicts the evolution of the molar mass distribution (MMD) along both the Prepolymerization and Finishing stages. The model requires to input the chain length distribution (CLD) of the initial PTMO