The measurement of crosslinking density can be achieved through various methods such as swelling experiments, differential scanning calorimetry (DSC), and spectroscopic techniques. Swelling experiments involve immersing the polymer network in a solvent and measuring the degree of swelling. The extent of swelling is inversely proportional to the crosslinking density. DSC provides insights into the thermal transitions of the polymer, which can be correlated to its crosslinking density. Spectroscopic techniques like Fourier-transform infrared spectroscopy (FTIR) can reveal information about the chemical bonds and crosslinks within the material.
