Acquisition of a size-exclusion chromatography (SEC) equipment
Exposure of polymers to UV radiation can cause chain breaks and therefore
a decrease in molecular weights. The CNEP has just acquired equipment for
size-exclusion chromatography (SEC) in order to characterize this
evolution of the distribution of molecular masses.
One of the difficulties often encountered for this technique lies in the low solubility of the usual polymers (polyethylene, polypropylene, polyamide, etc.) requiring the use of specific solvents and to solutions and analyzes at high temperatures (>140°C).
This is what our new equipment allows.
One of the difficulties often encountered for this technique lies in the low solubility of the usual polymers (polyethylene, polypropylene, polyamide, etc.) requiring the use of specific solvents and to solutions and analyzes at high temperatures (>140°C).
This is what our new equipment allows.
In addition, we have also equipped ourselves with high pressure liquid chromatography (HPLC) equipment which will allow us to follow the evolution of the level of stabilizers during photoaging tests.
