Temperature dependence of strain-induced crystallization in natural rubber: On the presence of different crystallite populations - Archive ouverte HAL Access content directly
Journal Articles Polymer Year : 2015

Temperature dependence of strain-induced crystallization in natural rubber: On the presence of different crystallite populations

(1) , (1) , (1) , (1) , (2) , (3) , (4)
1
2
3
4

Abstract

The effect of the temperature on strain induced crystallization (SIC) of natural rubber (NR) is studied by in situ wide angle X-rays scattering (WAXS) experiments performed along different thermo-mechanical paths (cyclic deformation at different temperatures or crystallization and melting in the deformed state). The crystallinity index (CI), the average crystallite size (L200) and the average volume of the crystallites (V) increase (decrease) similarly if the sample is cooled (heated) in the deformed state or stretched (unstretched) at fixed temperature. These experiments are analyzed through a thermodynamic description assuming that SIC is controlled by successive nucleation of crystallite populations. Such description predicts that for a stretching ratio λ above (below) 4 and a temperature above (below) room temperature, crystallization first occurs in chains with the highest (lowest) network chain density, leading to the smallest (largest) crystallites.
Fichier principal
Vignette du fichier
candau2015.pdf (776.33 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-01804713 , version 1 (18-01-2022)

Licence

Attribution - NonCommercial - CC BY 4.0

Identifiers

Cite

Nicolas Candau, Rabia Laghmach, Laurent Chazeau, J.-M. Chenal, Catherine Gauthier, et al.. Temperature dependence of strain-induced crystallization in natural rubber: On the presence of different crystallite populations. Polymer, 2015, 60, pp.115-124. ⟨10.1016/j.polymer.2015.01.029⟩. ⟨hal-01804713⟩
40 View
27 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More