Gonflement et contraction

(En anglais seulement) Swelling and contraction of ionic gels can be induced by various factors such as pH, ionic concentration in the solution, ambient humidity, temperature, ongoing chemical reaction, etc. An easy way to study these effects is by monitoring the gel layer thickness over time. A mechanical tester can be programmed to probe (with a high resolution) the surface of a gel ,periodically, in a non-destructive way.