Question

14)

Outline the dispersion of nanoparticles in nanocomposites filled with 2-D nanoparticles.

In short

Answer 1

In recent years, nanocomposites have attracted great interest in both nanomaterial research and industrial application. Nanoparticles, in comparison with microparticles, have been found to offer nanocomposites better mechanical, electrical and optical performance, etc. Homogeneous and aggregate-free dispersion of nanoparticles in the polymer matrix is essential for the manufacturing of nanocomposites, so as to realize their superior performance.

At poor dispersion level of nanoparticles, the performance of nanocomposites degrades significantly and sometimes is even worse than that of microcomposites. In mechanics, large aggregates cause stress concentrations around them and induce pre-mature fracture of composite materials. In electrical transmission industry, large aggregates may act as defects that induce partial discharge and early breakdown. In optics, large aggregates can interfere with light propagation, thus decrease the transparency and increase the haze of nanocoating.

Nowadays, 2D nanomaterials are preferred over 1D nanomaterials because of their remarkable dispersion on nanocomposites. 1D naomaterials doesn't show much improvement in dispersion on polymer matrix of nanocomposites.