Amorphous Agglomerates
Amorphous Agglomerates - Related Videos
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Polymorphism refers to the existence of a drug substance in multiple crystalline forms, known as polymorphs. Recently, this term has been expanded to include solvates (forms containing a solvent), amorphous forms (non-crystalline forms), and desolvated solvates (forms from which the solvent has been removed). Some polymorphic crystals possess lower aqueous solubility than their amorphous counterparts, leading to incomplete absorption. For instance, the oral suspension of Chloramphenicol, which...
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Structures of Solids
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Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
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Additional Subnuclear Structures
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The eukaryotic nucleus is a double membrane-bound organelle that contains nearly all of the cell’s genetic material in the form of chromosomes. It is rightly called the “brain” of the cell as it shoulders the responsibility of responding to various physiological processes, stress, altered metabolic conditions, and other cellular signals. The nucleus contains many membrane-less subnuclear organelles or nuclear bodies, such as nucleoli, Cajal bodies, speckles, paraspeckles, etc. These nuclear...
FAQs
Agglomerate strength reflects the balance among surface adhesion, capillary forces, electrostatic interactions, and drying-induced consolidation. Adhesion can hold neighboring particles together, while capillary forces become important when liquid bridges form and later dry. The resulting structure affects whether material withstands handling or disperses during processing, influencing powder flow, dissolution, and available surface area.
These structural properties control how the material interacts with its surroundings. Particle size influences packing and flow, porosity affects the internal space and access of liquids or gases, and surface area changes the extent of interfacial contact. Together, they can alter dissolution, chemical reactivity, moisture uptake, and the physical stability of the agglomerated material.
Moisture can influence both the formation and subsequent stability of these structures. During drying, liquid removal may consolidate particles into stronger agglomerates, while retained moisture can change their physical behavior and contribute to moisture sensitivity. Because amorphous material lacks crystal-like long-range order, moisture conditions must also be considered when evaluating the possibility of recrystallization.
A useful evaluation considers particle size, porosity, surface area, moisture content, and the forces responsible for particle association. Researchers can then relate these variables to measurable outcomes such as flow, dissolution, reactivity, and physical stability. Comparing samples produced under different adhesion or drying conditions helps identify which structural features control performance.
They are relevant when aggregation changes how a powder is handled or how a material performs during use. Controlled agglomeration may improve processing behavior, whereas uncontrolled association can create poor flow, moisture sensitivity, or instability. In pharmaceutical and materials applications, examining agglomerate structure helps connect manufacturing conditions with dissolution, reactivity, and physical performance.
Performance should be interpreted by linking structural measurements with functional outcomes rather than considering agglomeration alone. For example, changes in particle size, porosity, surface area, or moisture content can be compared with flow, dissolution, reactivity, and stability results. This approach reveals whether aggregation improved handling and processing or introduced risks such as recrystallization.