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Article Dans Une Revue Soft Matter Année : 2021

Linear viscoelasticity of an acrylate IPN, analysis and micromechanical modeling

Analyse et modélisation micromécanique du comportement viscoélastique linéaire d'un réseau interpénétré polymère acrylate

Résumé

An amorphous acrylate interpenetrated polymer network (IPN) was made in lab and tested by dynamic mechanical analysis. Using frequency sweep tests, it was shown that the time-temperature superposition principle applies to the double network. Moreover, a generalized Maxwell model with forty Maxwell branches successfully reproduced the material linear viscoelasticity. Using temperature sweep tests, the IPN linear viscoelasticity has been estimated by micromechanics, applying both mean-field homogenization models and fast Fourier transform (FFT)-based homogenization techniques. This modeling effort allowed discussing the simple network mechanical interactions. The microstructure of a second network, defined by a self-avoiding random walk, embedded in a continuous medium, in place of the first network, is shown to provide with satisfactory estimates of the IPN linear viscoelasticity.
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Dates et versions

hal-03320517 , version 1 (16-08-2021)

Identifiants

Citer

Julie Diani, Éléonore Strauch-Hausser. Linear viscoelasticity of an acrylate IPN, analysis and micromechanical modeling. Soft Matter, 2021, 17 (31), pp.7341 - 7349. ⟨10.1039/d1sm00808k⟩. ⟨hal-03320517⟩
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