Molecular mobility in polycyanurate networks investigated by viscoelastic measurements and molecular simulations

Molecular mobility in polycyanurate networks investigated by viscoelastic measurements and molecular simulations

The dynamic mechanical behavior of a series of polycyanurate networks has been studied in the glassy state as a function of cyanate conversion. Two relaxations, β and γ, were defined and the Arrhenius dependence and Starkweather treatments were applied. To understand the origin of these sub‐Tg relax...

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Veröffentlicht in:Polymer engineering and science 1997-10, Vol.37 (10), p.1606-1620
Hauptverfasser: Georjon, Olivier, Schwach, Gregoire, Gerard, Jean-François, Galy, Jocelyne, Albrand, Michel, Dolmazon, Rene
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Measurement
Polymers
Relaxation phenomena
Viscoelasticity
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container_end_page 1620
container_issue 10
container_start_page 1606
container_title Polymer engineering and science
container_volume 37
creator Georjon, Olivier
Schwach, Gregoire
Gerard, Jean-François
Galy, Jocelyne
Albrand, Michel
Dolmazon, Rene
description The dynamic mechanical behavior of a series of polycyanurate networks has been studied in the glassy state as a function of cyanate conversion. Two relaxations, β and γ, were defined and the Arrhenius dependence and Starkweather treatments were applied. To understand the origin of these sub‐Tg relaxations, molecular modeling (both mechanics and dynamics) was used on model molecules representative of the network structure. Two types of molecular motion were examined: rotation of the phenylene ring and crankshaft of the chain segment between crosslinks (i.e., triazine rings).
doi_str_mv 10.1002/pen.11809
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subjects Measurement
Polymers
Relaxation phenomena
Viscoelasticity
title Molecular mobility in polycyanurate networks investigated by viscoelastic measurements and molecular simulations
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