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Costa, F. R. ; Leuteritz, A. ; Meinl, J. ; Wagenknecht, U. ; Heinrich, G.
LDH as nanofiller: Organic modification and dispersion in polymers

Layered double hydroxide (LDH) is a relatively new class of layered crystalline clay materials to be used as nanofiller in various polymer matrices. We report here the organic modification of LDH by anionic surfactants having different sizes and functionalities. Subsequently, their dispersion in polymer is discussed and finally the characteristics of the polymer/LDH nanocomposites are investigated. LDH has been modified using regeneration method, which shows that irrespective of size and functionality of the anionic surfactant, organic modification can be carried out efficiently. However, it has been observed that alkyl sulfonate are more efficiently intercalated within LDH layers than other surfactants giving well defined crystal structure of the modified LDH. These modified LDH, when dispersed in polymers like maleic anhydride grafted polyethylene shows that not only the size of the surfactant, but also the functionality of the surfactant influences their dispersion in a non polar polymer matrix.

Quelle
Macromolecular Symposia 301

Seiten
46-54

DOI
http://dx.doi.org/10.1002/masy.201150307

Erschienen am
April 2011
 
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