Intercalation and structural aspects of macroRAFT agents into MgAl layered double hydroxides. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Beilstein Journal of Nanotechnology Année : 2016

Intercalation and structural aspects of macroRAFT agents into MgAl layered double hydroxides.

Résumé

Increasing attention has been devoted to the design of layered double hydroxide (LDH)-based hybrid materials. In this work, we demonstrate the intercalation by anion exchange process of poly(acrylic acid) (PAA) and three different hydrophilic random copolymers of acrylic acid (AA) and n-butyl acrylate (BA) with molar masses ranging from 2000 to 4200 g mol$^{−1}$ synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization, into LDH containing magnesium(II) and aluminium(III) intralayer cations and nitrates as counterions (MgAl-NO$_3$ LDH). At basic pH, the copolymer chains (macroRAFT agents) carry negative charges which allowed the establishment of electrostatic interactions with the LDH interlayer and their intercalation. The resulting hybrid macroRAFT/LDH materials displayed an expanded interlamellar domain compared to pristine MgAl-NO$_3$ LDH from 1.36 nm to 2.33 nm. Depending on the nature of the units involved into the macroRAFT copolymer (only AA or AA and BA), the intercalation led to monolayer or bilayer arrangements within the interlayer space. The macroRAFT intercalation and the molecular structure of the hybrid phases were further characterized by Fourier transform infrared (FTIR) and solid-state $^{13}$C, $^1$H and $^{27}$Al nuclear magnetic resonance (NMR) spectroscopies to get a better description of the local structure.
Fichier principal
Vignette du fichier
2190-4286-7-191 (1).pdf (3.06 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-01481950 , version 1 (08-07-2024)

Identifiants

Citer

Dessislava Kostadinova, Ana Cenacchi Pereira, Muriel Lansalot, Franck D’agosto, Elodie Bourgeat-Lami, et al.. Intercalation and structural aspects of macroRAFT agents into MgAl layered double hydroxides.. Beilstein Journal of Nanotechnology, 2016, 7, pp.2000-2012. ⟨10.3762/bjnano.7.191⟩. ⟨hal-01481950⟩
146 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More