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Article Dans Une Revue ACS Macro Letters Année : 2019

Nanorheology with a Conventional Rheometer: Probing the Interfacial Properties in Compatibilized Multinanolayer Polymer Films

Résumé

Measuring the viscoelastic behavior of polymers in the vicinity of a surface or under confinement is an experimental challenge. Simple rheological tests of nanolayered films of polyethylene/polyamide 6 compatibilized in situ during the coextrusion process enabled the probing of these interfacial properties. Taking advantage of the different melting points and of the multiplication of the number of interfaces, a drastic increase of dynamic moduli was reported when increasing the interphase volume fraction in the films. A solid-like behavior for the interphase was identified. The complex viscosity of nanolayered films as a function of angular frequency was quantitatively captured for all samples using a weighted mixing law of bulk and interphase viscosities, without additional adjusting parameters, highlighting the interfacial synergy developed in nanolayered polymer films.

Domaines

Matériaux
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Dates et versions

hal-02408847 , version 1 (20-04-2020)

Identifiants

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Quentin Beuguel, Alain Guinault, Liliane Léger, Frédéric Restagno, Cyrille Sollogoub, et al.. Nanorheology with a Conventional Rheometer: Probing the Interfacial Properties in Compatibilized Multinanolayer Polymer Films. ACS Macro Letters, 2019, 8 (10), pp.1309-1315. ⟨10.1021/acsmacrolett.9b00662⟩. ⟨hal-02408847⟩
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