Recently, the description and the synthesis of hybrids, organic or anorganic nanostructured materials had gained much attention due to the particular characteristics and potential applications of new synthesized nanocomposites. Several scientists showed that the addition of chitosan to layered silicates e.g. modified and unmodified montmorilonite (MMT) may improve its thermal stability due to the interactions which occur between the clay particles and chitosan. Chitosan/layered silicate nanocomposites with different ratios via solution-mixing technique showed also that chitosan chains were inserted into silicate layers to form the intercalated nanocomposites. The interlayer distance of the silicates in the nanocomposites enlarged as their amount increased.

This study deals with characterization of chitosan / layered silicate nanocomposites obtained by solution-mixing technique, having different compositions including treated and untreated montmorilonite (MMT). To establish an optimum amount of MMT and also the effect of nanoparticles on nanocomposite properties, DSC, X-ray diffraction and TG measurements were performed.

References:

1.      E. Gunister , D. Pestreli , C. H. Unlu, O. Atıcı , N. Gungor, Carbohydr. Polym., 2007, 67, 358

2.      X. Wang, Y. Du, J. Yang, X. Wang, X. Shi, Y. Hu, Polym. 2006, 47, 6738.

1. FULLTEXT: Characterisation of the Chitosan/layered silicate nanocomposites, Microsoft Office Document, 3.3MB

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