Correlation between crystallization and mechanical stress revealed by chain scission of segmented amide copolymer - Archive ouverte HAL Access content directly
Journal Articles Polymer Year : 2022

Correlation between crystallization and mechanical stress revealed by chain scission of segmented amide copolymer

Abstract

By tuning hydrolysis duration of a segmented ether-amide copolymer (PEBA), a range of specimens presenting various macromolecular structures has been produced. Knowing that scissions occur predominantly at the bond between hard and soft blocks, for a given hard phase structure we study the impact of phase interconnection changes on strain-induced crystallization (SIC) occurring during tensile loading. The consequences of chain scissions on the structural reorganization involving SIC measured with in situ X-ray diffraction is considered here for the first time. A close correlation between stress and crystallinity induced under strain is highlighted whatever the chain scission number, i.e. the number of phase interconnections. As a result, the stress decrease observed at a given elongation can be interpreted as a consequence of a SIC weakening with the chain scission process.
Fichier principal
Vignette du fichier
PIMM_P_2022_BARDIN.pdf (4.4 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03702039 , version 1 (22-06-2022)

Identifiers

Cite

Antoine Bardin, Pierre-Yves Le Gac, Pierre-Antoine Albouy, Hervé Bindi, Bruno Fayolle. Correlation between crystallization and mechanical stress revealed by chain scission of segmented amide copolymer. Polymer, 2022, 247, pp.124757. ⟨10.1016/j.polymer.2022.124757⟩. ⟨hal-03702039⟩
25 View
59 Download

Altmetric

Share

Gmail Facebook X LinkedIn More