swellingratio
Swelling ratio is a dimensionless quantity used to describe the extent to which a material absorbs a solvent and expands. It is a common parameter in the study of hydrogels, polymers, and other absorbent materials. The swelling ratio is typically calculated by comparing the mass or volume of the swollen material to its dry state. A higher swelling ratio indicates a greater capacity for the material to absorb the solvent.
The calculation can be performed using mass or volume. The mass swelling ratio is often defined as
Swelling ratio is a critical property for applications where materials are designed to interact with liquids.