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

Title: Polymer/clay nanocomposites: influence of ionic strength on the structure and adhesion characteristics in multilayered films
Creator: Stefanescu, Eduard A.; Stefanescu, Cristina; Donose, Bogdan C.; Garno, Jayne C.; Daly, William H.; Schmidt, Gudrun; Negulescu, Ioan I.
Relation: Macromolecular Materials and Engineering Vol. 293, Issue 9, p. 771-780
Publisher Link: http://dx.doi.org/10.1002/mame.200800139
Publisher: Wiley-Blackwell
Resource Type: journal article
Date: 2008
Description: 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 cryomicrotomed films with increasing ionic strength.
Subject: films; Laponite; nanocomposites; PEO; surfaces
Identifier: http://hdl.handle.net/1959.13/43507
Identifier: uon:5606
Identifier: ISSN:1438-7492
Language: eng
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