CURING PROCESS OF BENZOXAZINE SYSTEMS. AN EXPERIMENTAL AND THEORETICAL STUDY

Authors

  • Elangeni Ana Gilbert
  • Agustín Forchetti
  • Juan Ignacio Pesoa
  • Emilio Berkenwald
  • Marisa Spontón
  • Diana Estenoz

DOI:

https://doi.org/10.52292/j.laar.2019.64

Keywords:

Benzoxazine, Curing, Polybenzoxazyne, Polymer, Properties

Abstract

A mathematical model that simulates the curing process of benzoxazine (Bz) systems is presented. The model predicts the conversion, gel point and Tg along the curing process, and considers the diffusional limitations to mass transfer due to the increase in the system viscosity along the process. This model can be used to select an appropriate combination of time and temperature in order to obtain a material with pre-specified properties. The theoretical parameters were adjusted with experi-mental data: conversion, weight-average molecular weight, weight fraction of solubles and Tg. The Bz based on bisphenol A and aniline (BzBA) was used to adjust the model. The curing kinetic of this Bz was followed by FTIR, SEC and DSC, considering five different curing conditions. A very good agreement between experimental and simulated values was ob-served, even when curing is carried out under differ-ent temperatures profiles.

Downloads

Published

2019-09-30

Issue

Vol. 49 No. 4 (2019): Latin American Applied Research

Section

Applied Chemistry

License

Once a paper is accepted for publication, the author is assumed to have transferred its copyright to the Publisher. The Publisher will not, however, put any limitation on the personal freedom of the author to use material from the paper in other publications. From September 2019 it is required that authors explicitly sign a copyright release form before their paper gets published. The Author Copyright Release form can be found here