HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Controlling the Morphology of Film-Forming, Nanocomposite Latexes Containing Layered Double Hydroxide by RAFT-Mediated Emulsion Polymerization

Abstract : Stable nanocomposite latexes with sandwich, encapsulated, or armored morphology were produced by starved-feed emulsion polymerization in the presence of layered double hydroxide (LDH) nanoparticles. Four statistical copolymers of acrylic acid (AA) and n-butyl acrylate (BA) were adsorbed on the LDH surface, and a film-forming methyl acrylate (MA)/BA (8:2 mass/mass) monomer feed was chosen to facilitate subsequent film formation under ambient conditions. P(AA17.5-co-BA17.5)-R (R = RAFT function) produced the sandwich morphology, while P(AA7.5-co-BA7.5)-R gave the encapsulated morphology, which is remarkable given that nonencapsulated morphologies are normally considered to be the preferred equilibrium structures for nanocomposite particles. Adsorption behavior and monomer conversion profiles were very similar for the two systems, and we tentatively ascribe the morphological difference to the higher density of RAFT functions in the P(AA7.5-co-BA7.5)-R system. A RAFT-free analogue produced armored latexes, highlighting the importance of the RAFT function for promoting growth of the polymer shell from the nanoparticle surface.
Document type :
Journal articles
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-01859493
Contributor : Pierre-Yves Dugas Connect in order to contact the contributor
Submitted on : Thursday, December 23, 2021 - 2:32:52 PM
Last modification on : Monday, March 14, 2022 - 4:52:08 PM

File

180417_ldh_paper_REVISED.pdf
Files produced by the author(s)

Identifiers

Citation

Samuel Pearson, Marko Pavlovic, Thomas Augé, Valerian Torregrossa, Istvan Szilagyi, et al.. Controlling the Morphology of Film-Forming, Nanocomposite Latexes Containing Layered Double Hydroxide by RAFT-Mediated Emulsion Polymerization. Macromolecules, American Chemical Society, 2018, 51 (11), pp.3953 - 3966. ⟨10.1021/acs.macromol.8b00541⟩. ⟨hal-01859493⟩

Share

Metrics

Record views

76

Files downloads

12