Polymer-clay nanocomposites: Influence of ionic strength on the structure and adhesion characteristics in multilayered films

Stefanescu, Eduard A., Stefanescu, Cristina, Donose, Bogdan C., Garno, Jayne C., Daly, William H., Schmidt, Gudrun and Negulescu, Ioan I. (2008) Polymer-clay nanocomposites: Influence of ionic strength on the structure and adhesion characteristics in multilayered films. Macromolecular Materials and Engineering, 293 9: 771-780. doi:10.1002/mame.200800139


Author Stefanescu, Eduard A.
Stefanescu, Cristina
Donose, Bogdan C.
Garno, Jayne C.
Daly, William H.
Schmidt, Gudrun
Negulescu, Ioan I.
Title Polymer-clay nanocomposites: Influence of ionic strength on the structure and adhesion characteristics in multilayered films
Formatted title

Journal name Macromolecular Materials and Engineering   Check publisher's open access policy
ISSN 1438-7492
Publication date 2008-09-12
Sub-type Article (original research)
DOI 10.1002/mame.200800139
Volume 293
Issue 9
Start page 771
End page 780
Total pages 10
Place of publication Weinheim, Germany
Publisher Wiley-CCH
Language eng
Subject 09 Engineering
10 Technology
Abstract The aim of the present contribution is to understand how ionic strength, brought by the addition of salt to laponite/PEO nanocomposite dispersions, influences the texture and adhesion characteristics at nano- and microscales in multilayered nanocomposite films prepared from such dispersions. At the nano-scale, SAXS and XRD measurements indicated that the clay platelets orient parallel to the film plane and that the polymer chains intercalate the clay platelets regardless of salt addition. A gradual transition from an agglomerated structure, containing polymer-rich and clay-rich domains, to a fine-balanced structure with smaller distinct details without excess PEO was observed, via AFM, on the exposed edges of cryo-microtomed films with increasing ionic strength.
Formatted abstract

Keyword films
laponite
nanocomposites
PEO
surfaces
Q-Index Code C1
Q-Index Status Provisional Code

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Wed, 16 Sep 2009, 13:48:12 EST by Dr Bogdan Donose on behalf of Aust Institute for Bioengineering & Nanotechnology