Residual Strain and Nanostructural Effects during Drying of Nanocellulose/Clay Nanosheet Hybrids: Synchrotron X-ray Scattering Results - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue ACS Nano Année : 2023

Residual Strain and Nanostructural Effects during Drying of Nanocellulose/Clay Nanosheet Hybrids: Synchrotron X-ray Scattering Results

Lengwan Li
  • Fonction : Auteur
Pan Chen
  • Fonction : Auteur
Lilian Medina
Lin Yang
  • Fonction : Auteur
Lars A Berglund

Résumé

Cellulose nanofibrils (CNF) with 2D silicate nanoplatelet reinforcement readily form multifunctional composites by vacuum-assisted self-assembly from hydrocolloidal mixtures. The final nanostructure is formed during drying. The crystalline nature of CNF and montmorillonite (MTM) made it possible to use synchrotron Xray scattering (WAXS, SAXS) to monitor structural development during drying from water and from ethanol. Nanostructural changes in the CNF and MTM crystals were investigated. Changes in the out-of-plane orientation of CNF and MTM were determined. Residual drying strains previously predicted from theory were confirmed in both cellulose and MTM platelets due to capillary forces. The formation of tactoid platelet stacks could be followed. We propose that after filtration, the constituent nanoparticles in the swollen, solid gel already have a "fixed" location, although self-assembly and ordering processes take place during drying.
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Origine : Publication financée par une institution
Licence : CC BY - Paternité

Dates et versions

hal-04176588 , version 1 (03-08-2023)

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Citer

Lengwan Li, Pan Chen, Lilian Medina, Lin Yang, Yoshiharu Nishiyama, et al.. Residual Strain and Nanostructural Effects during Drying of Nanocellulose/Clay Nanosheet Hybrids: Synchrotron X-ray Scattering Results. ACS Nano, 2023, 17 (16), pp.15810-15820. ⟨10.1021/acsnano.3c03664⟩. ⟨hal-04176588⟩
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