Nanosized FRs

With the development of nanomaterials concerns exist about their toxicity and health impacts. Because of the size of nanoparticulates, concerns arise about then-ability to penetrate tissue and cause harmful effects ranging from mild irritation to more serious tumor developments. In the case of nanoclays, one has to consider that nanoclays only become nanosized after incorporation and exfoUation in a polymer matrix. In a practical sense, the presence of crystalline silica, a material that may be found in clays, is probably more of a real hazard. Crystalline silica is regulated to extremely low levels in commercial day materials [112] (see also Chapter 19). 

Franklin Minerals Aluchem Nabaltech GmbH Albemarle Inc. 

Great Lakes Chemical Corp. Albemarle Corp. 

DSM Melamine Buddenheim Iberica Akzo Nobel Argolinz Chemie Linz 

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