Extension of Group Interaction Modelling to predict chemorheology of curing thermosets

Altmann, N., Halley, P.J. and Nicholson, T.M. (2009) Extension of Group Interaction Modelling to predict chemorheology of curing thermosets. Korea-Australia Rheology Journal, 21 2: 91-102.

Author Altmann, N.
Halley, P.J.
Nicholson, T.M.
Title Extension of Group Interaction Modelling to predict chemorheology of curing thermosets
Journal name Korea-Australia Rheology Journal   Check publisher's open access policy
ISSN 1226-119X
Publication date 2009-06
Sub-type Article (original research)
Open Access Status
Volume 21
Issue 2
Start page 91
End page 102
Total pages 12
Editor Hyungsu, Kim
Place of publication Seoul, Korea
Publisher Korea-Australia Rheology Society
Language eng
Subject C1
091209 Polymers and Plastics
860607 Plastic Products (incl. Construction Materials)
Abstract This paper describes an extension of viscoelastic Group Interaction Modelling (GIM) to predict the relaxation response of linear, branched and cross-linked structures. This model is incorporated into a Monte Carlo percolation grid simulation used to generate the topological structure during the isothermal cure of a gel, so enabling the chemorheological response to be predicted at any point during the Cure. The model results are compared to experimental data for an epoxy-amine systems and good agreement is observed. The viscoelastic model predicts the same exponent power-law behaviour of the loss and storage moduli as a function of frequency and predicts the cross-over in the loss tangent at the percolation condition for gelation. The model also predicts the peak in the loss tangent which occurs when the glass transition temperature surpasses the isothermal cure temperature and the system vitrifies.
Keyword group interaction modelling
VISCOELASTIC DYNAMIC PROPERTIES
Q-Index Code C1
Q-Index Status Provisional Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Thu, 03 Sep 2009, 07:52:56 EST by Mr Andrew Martlew on behalf of School of Chemical Engineering