methods to analysize the particle diameter of a mixture
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Using the Morphology G3 microscope you can determine the sizes of the particles in a powder, just as when using a normal microscope. However, this instrument has some large advantages compared to manual microscopy, both in relation to the larger number of particles included in the analysis – and the possibilities of looking at special characteristics, which might be highly valuable for optimizing the manufacturing process.
In this post, we present two cases: The first case shows that an excellent correlation between particle sizes determined on Morphology G3 and by laser diffraction can be obtained. The second case is meant as inspiration, where the possibilities for examining powders in mixtures are presented.
Case 1: Comparison of laser diffraction and Morphology G3 results
A powder sample has been analysed: Using the dispersion unit, which is an integrated part of the instrument, the sample powder was dispersed onto a glass plate. Overall, almost 200.000 particles were following analysed and a separate picture was recorded of each particle!
The first graph shows the analysis of all particles in the sample. A main peak is observed – and to the right of this peak, additional “uneven peaks” suggest that several larger particles are also present in the mixture.
Results Morphology G3
As one picture is recorded of each separate particle in the mixture, it was easily observed, that the main fraction of these large particles were fibres . These fibres can be regarded as impurities, and are not relevant for the analysis.
Further, it was observed, that a number of the particles were agglomerated, i.e. more particles are attached to each other. In this analysis, these agglomerates are not relevant either.
In this post, we present two cases: The first case shows that an excellent correlation between particle sizes determined on Morphology G3 and by laser diffraction can be obtained. The second case is meant as inspiration, where the possibilities for examining powders in mixtures are presented.
Case 1: Comparison of laser diffraction and Morphology G3 results
A powder sample has been analysed: Using the dispersion unit, which is an integrated part of the instrument, the sample powder was dispersed onto a glass plate. Overall, almost 200.000 particles were following analysed and a separate picture was recorded of each particle!
The first graph shows the analysis of all particles in the sample. A main peak is observed – and to the right of this peak, additional “uneven peaks” suggest that several larger particles are also present in the mixture.
Results Morphology G3
As one picture is recorded of each separate particle in the mixture, it was easily observed, that the main fraction of these large particles were fibres . These fibres can be regarded as impurities, and are not relevant for the analysis.
Further, it was observed, that a number of the particles were agglomerated, i.e. more particles are attached to each other. In this analysis, these agglomerates are not relevant either.
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