Intensified mixing processes for high performance products- From paints, coatings to cosmetics; car tyres, batteries to personal care and pharmaceuticals; lubricants, greases to food and crop protection
Recent decades have seen the development of several novel products containing nanoscale powders in their formulation. A crucial requirement in the manufacture of these products with significantly superior performance characteristics compared to their micron sized counterparts is the disintegration of powder clusters. This requires intensified mixing to achieve a fine and stable dispersion so as to ensure the benefits associated with fine scale dispersions.
The talk will cover the dispersion process, i.e. the initial powder incorporation and pre-dispersion preparation (or intercalation in the case of layered structures) and the deagglomeration of nanoparticle clusters in liquids. How we study the kinetics and mechanisms of deagglomeration, and the implications for practice, i.e. how the knowledge gained can be useful for process design and scale up which is particularly challenging in the area, will be elaborated.
There will also be references to those powders with layered structures, such as nanoclays, and the dispersion of these that take place through intercalation and exfoliation.
Whether nanoscale powders are included in the formulation as rheology modifiers, anti-sagging, anti-settling agents or to introduce functional properties such as anti-wear, anti-friction properties, scratch resistance, enhanced conductivity..., dispersion rheology can become highly challenging, affecting the overall flow, homogeneity, thereby compromising product quality. This is particularly prominent during the exfoliation step of nanoclays dispersions, but also with nanoparticles depending on the concentration and material interactions- continuous phase and other additives. It is also worth noting that the flow behaviour may become highly non-Newtonian during storage.
A series of case studies from collaborative projects based in industry and academia will be presented highlighting how product and process development go hand-in-hand.
Intensified mixing processes for high performance products- From paints, coatings to cosmetics; car tyres, batteries to personal care and pharmaceuticals; lubricants, greases to food and crop protection
Recent decades have seen the development of several novel products containing nanoscale powders in their formulation. A crucial requirement in the manufacture of these products with significantly superior performance characteristics compared to their micron sized counterparts is the disintegration of powder clusters. This requires intensified mixing to achieve a fine and stable dispersion so as to ensure the benefits associated with fine scale dispersions.
The talk will cover the dispersion process, i.e. the initial powder incorporation and pre-dispersion preparation (or intercalation in the case of layered structures) and the deagglomeration of nanoparticle clusters in liquids. How we study the kinetics and mechanisms of deagglomeration, and the implications for practice, i.e. how the knowledge gained can be useful for process design and scale up which is particularly challenging in the area, will be elaborated.
There will also be references to those powders with layered structures, such as nanoclays, and the dispersion of these that take place through intercalation and exfoliation.
Whether nanoscale powders are included in the formulation as rheology modifiers, anti-sagging, anti-settling agents or to introduce functional properties such as anti-wear, anti-friction properties, scratch resistance, enhanced conductivity..., dispersion rheology can become highly challenging, affecting the overall flow, homogeneity, thereby compromising product quality. This is particularly prominent during the exfoliation step of nanoclays dispersions, but also ...
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