https://doi.org/10.1351/goldbook.12274
Experimental method based on the measurement of the time-averaged intensity of light scattered from a polymer solutions or a dispersion of particles at various angles with respect to the incident beam.
Notes:
- SLS is an absolute method, i.e., one not requiring calibration, for the determination of the molar mass of a macromolecular substance or dispersion of particles.
- Measurement of the angular dependence of the time-averaged intensity of light scattered from a dilute solution of macromolecules or a dilute dispersion of particles that are not negligibly small with respect to the wavelength of the incident light can be used to evaluate an average radius of gyration of the solute macromolecules or dispersed particles.
- Measurement of the concentration dependence of the intensity of light scattered from a dilute solution of macromolecules or a dilute dispersion of particles yields information on the thermodynamic interaction between the solute and solvent or dispersed particles and dispersion medium in terms of the second osmotic virial coefficient and, less frequently, higher virial coefficients.