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High Performance Polymers
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Dynamic Mechanical Analysis of Polyurethane-Epoxy Interpenetrating Polymer Networks

Mariana Cristea

'Petru Poni; Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, Iasi 700487, Romania, mcristea{at}icmpp.ro

Sorin Ibanescu

'Petru Poni; Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, Iasi 700487, Romania

Constantin N. Cascaval

'Petru Poni; Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, Iasi 700487, Romania

Dan Rosu

'Petru Poni; Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, Iasi 700487, Romania

A series of semi-interpenetrated polymer networks based on bisphenol A epoxy resin and polyurethane was synthesized by sequential procedure. The molecular dynamics of polyurethane incorporated in the resin network with increasing amounts of resin was followed by dynamic mechanical analysis. All phenomena that concur in the material are evaluated by cross-examination of the storage modulus (E'), loss modulus (E'') and loss factor (tan {delta}) variation with temperature. Complex aspects were elucidated in consecutive heating-cooling-heating cycles and by calculating the apparent activation energy of relaxations in multiplex experiments.

Key Words: semi-interpenetrated polymer network • polyurethane • dynamic mechanical analysis

This version was published on October 1, 2009

High Performance Polymers, Vol. 21, No. 5, 608-623 (2009)
DOI: 10.1177/0954008309339940
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