* * Chas wrote: "Derk" <nobody@invalid.org> wrote in message news:48a6f685$0$201$e4fe514c@news.xs4all.nl... I just read an article in my quality newspaper, in which a toxicologist warns for long nano-tube fibres, as used in tennis rackets and bike frames. In English, I found this about th subject: http://www.nanotechproject.org/news/archive/mwcnt/ Better safe than

Natural fiber-reinforced composites have been attracted researchers for their unique properties, such as strength, toughness, high modulus, low-cost, low density and environmentally friendly. Similarly, polymer-nanoclay composites have been widely investigated for their significant improvement in modulus, impact strength, barrier properties, heat resistance and thermal stability. However, in