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Layered double hydroxide platelets exfoliation into a water‐based polyester
Author(s) -
Swanson C.H.,
Stimpfling T.,
TroutierThulliez A.L.,
HintzeBruening H.,
Leroux F.
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38483
Subject(s) - exfoliation joint , hydroxide , materials science , polymer , polymer chemistry , polyester , chemical engineering , aqueous solution , layered double hydroxides , nanocomposite , solvent , polymer nanocomposite , composite material , chemistry , nanotechnology , organic chemistry , graphene , engineering
Abstract Nitrate layered double hydroxide (LDH) phase Zn 2 Al(OH) 6 (NO 3 )·2H 2 O is successfully exfoliated in the presence of polyester under mild conditions using water as essential solvent and at room temperature under air. From small angle X‐ray scattering spectroscopy a total exfoliation is found to be achieved using up to 10 wt % LDH, while intercalated polymer nanocomposite structures largely extended up to 14 nm are observed for loading ranging from 10 to 20 wt %. The process is found to be explained by the diffusion of the polymer chain into the interlayer host structure. Starting from an initial value of 0.89 nm, ≈3, 7, 10, 14, and 20 nm transient interleaved nanostructures are formed without any carbonate uptake. The collective gap distance is certainly due to a defined number of polymer chains diffusing into the LDH interstices. Similarly, starting from an aqueous polyester solution highly concentrated in LDH nitrate phase up to 50% w.w, successive dilutions yield platelet exfoliation, thus rendering a smooth chemistry process attractive for potential applications. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013