mikroagglomerated

Mikroagglomerated describes powders in which primary particles form small, micro-scale aggregates that behave as single units. These microagglomerates typically range from a few micrometers to tens of micrometers in effective size and retain some individuality of the constituent particles. The term is used across materials science, pharmaceuticals, ceramics, pigments, and food processing to distinguish these materials from both primary powders and larger granules.

Formation methods commonly include wet granulation and spray drying, as well as drying-induced agglomeration and mechanical agglomeration processes. Bindants, granulation liquids, particle morphology, and drying conditions influence the size, strength, porosity, and breakage resistance of mikroagglomerates. The resulting microstructures affect bulk properties such as flowability, compressibility, bulk density, and dusting potential.

Characterization of mikroagglomerated powders involves particle size distribution, morphology, and surface area, typically measured by laser diffraction, optical or electron microscopy, and BET methods. Flow tests, friability, and compressibility measurements help assess handling and processing performance. The stability of microagglomerates depends on moisture, temperature, and storage conditions, which can alter their integrity over time.

Applications benefit from the improved bulk handling and dosing uniformity provided by mikroagglomerates. In pharmaceuticals, mikroagglomerated powders can enhance tablet formation and content uniformity while moderating dissolution and release profiles. In pigments, catalysts, ceramics, and food powders, they improve flow, blending, and process consistency. However, overly strong or poorly bonded microagglomerates may hinder dissolution, re-dispersion, or uniformity, requiring careful control of processing parameters.