At optical microscope level, the number of agglomerates
can be compared between different samples.
In particular, shape parameters such as particle convexity and circularity are shown to be important in differentiating primary particles and agglomerates
However, because of the existence of large agglomerates
in batch A, it is quite likely that this batch would behave differently during processing than a product consisting of not-agglomerated particles of the same size.
The study had the following objectives: a) to characterize nanoparticles in several nanotechnology-based cosmetic powders currently in the market, b) to determine the potential for exposures to airborne nanoparticles and their agglomerates
during the use of cosmetic powders in a realistic exposure scenario, and c) to compare investigated nanotechnology-based cosmetic powders with their regular (non-nanotechnology) counterparts.
There's still a market for agglomerates
," says de Jesus, "but it is not something we expect to see grow.
Aggregates and agglomerates
are separated from primary particles on the basis of: shape, low circularity, and to some extent size (the size range is quite broad)--see Figure 1, region 1.
Micrometer-sized magnetic agglomerates
can be characterized with a polarized SUSANS facility.
Again a manufactured product, only this time the marble stones are ground into a powder, then mixed with a wax resin to achieve a smooth, blemish-free finish.
Small clay particles can agglomerate
with polyvinyl acetate (PVAc) to form neutral-buoyancy aggregates.
The model 2000 breaks up agglomerates
, reduces particle size, overcomes surface forces and speeds up chemical reactions involving insoluble materials.
Depending on the processing and drying conditions, the agglomerates
may partially or completely break down to individual granules.
The scattering equation developed to analyze the intensity scattered by agglomerates
and interacting scatters was used to analyze the scattering data from these gels.
Instantizing is a process that agglomerates
water-soluble powder by using water as a spray medium.
In each case, UWMS agglomerates
are present on 12, 20 and 30 sieve sands, which are not present in WMS.
Polymer produced agglomerates
are open high-surface-area structures compared with those produced by cement at 3 kg/mt.