How can you notice imbibition in case of rubber?

Imbibition in rubber can be observed when rubber swells or expands upon exposure to liquids, such as water or certain solvents. This process occurs as the liquid penetrates the porous structure of the rubber, causing it to absorb moisture and increase in volume. You can notice this effect by measuring the dimensions of the rubber before and after immersion in a liquid, where an increase in size indicates imbibition. Additionally, changes in physical properties, such as flexibility or hardness, may also be evident after the rubber has absorbed the liquid.