volume fraction

solutions

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July 15, 2026

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A solution is a homogeneous mixture of two or more substances at the molecular level. While commonly associated with liquids, solutions can also be solids or gases. The ability of one substance to dissolve another depends on their chemical nature, temperature, and sometimes pressure.12

Volume fraction ((\phi)) is a way to express the composition of a solution, particularly useful for solutions with large molecules like polymers. It is calculated by dividing the volume of the polymer by the total volume of the polymer and solvent. Other methods for expressing solution composition include weight fraction, molar concentration, molality, and mole fraction.12

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Volume fraction
) The composition of a nonelectrolyte solution containing very large molecules, known as polymers, is most conveniently expressed by the volume fraction (Φ)—i.e., the volume of polymer used to prepare the solution divided by the sum of that volume of polymer and the volume…
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) The composition of a nonelectrolyte solution containing very large molecules, known as polymers, is most conveniently expressed by the volume fraction (Φ)—i.e., the volume of polymer used to prepare the solution divided by the sum of that volume of polymer and the volume…
Read More