Effect of Excess Surface Modification Molecules

As mentioned above that high resolution TGA was used to check the purity of the filler so that no local bilayer of the excess surface modification molecules is present in the filler. The commercially treated fillers, however, are often observed to contain an excess of surface modification molecules [16]. This excess can lead to unwanted interactions with the epoxy prepolymer or can thermally degrade at lower temperatures when composites are subjected to higher temperatures thus, the presence of such excess amount is not required. In order to underline the effect of the excess surface modification molecules on the filler surface on the composite properties, epoxy nanocomposites with a number of commercially pro- 

Reproduced from Ref. [16] with permission from Springer. 

The oxygen permeation through the epoxy composites containing commercially procured and lab treated montmorillonites was measured and the results are 

1 Brydson, J.A. (1975) Plastic Materials, Newnes-Butterworths, London. 

4 Ellis, B. (1993) Chemistry and Technology of Epoxy Resins, Blackie Academic Professional, London. 

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