3 results about "Light scattering measurement" patented technology

Provided is a hydrogenated diene polymer in which the branching degree (Bn) obtained by GPC-light scattering measurement with a viscosity detector is 1.5 or greater, the composition ratio (mol%) of a structural unit represented by the following formula (1), a structural unit represented by the following formula (2), a structural unit represented by the following formula (3), and a structural unit represented by the following formula (4) is set to a, b, c, and d in this order, respectively, the following mathematical formula (S) is satisfied, and the hydrogenation rate is 40 to 85%. Mathematical formula (S): 10 ≦ [(a+b) / (a+b+c+d)] × 100 ≦ 70

Provided are a light scattering measurement device and a light scattering measurement method that specify a material of a particle included in a dispersion liquid including at least one type of particles. The light scattering measurement device includes a light source unit that irradiates the dispersion liquid including at least one type of particles with measurement light, a parameter setting unit that sets at least one of a scattering angle or a measurement wavelength as a measurement parameter, a scattered light measurement unit that obtains a plurality of pieces of scattering intensity data by measuring a scattering intensity of scattered light emitted from the dispersion liquid by the measurement light a plurality of times while changing a value of the measurement parameter a plurality of times, and a calculation unit that calculates scattering intensity time variation characteristic data and scattering intensity parameter-dependent data from the scattering intensity data, and specifies a material of each type of particle of the particles of the dispersion liquid specified by fitting the scattering intensity time variation characteristic data and the scattering intensity parameter-dependent data using a theoretical formula or a simulation based on a theory of electromagnetic wave behavior that defines a relationship of a refractive index, a particle diameter, and the scattering intensity.

The application discloses a light scattering suspended drop shape parameter measurement system and method, and belongs to the technical field of fluid characteristic research. The method comprises the following steps: using a monochromatic coherent laser beam, expanding the laser beam into an incident light with a beam width of 3-5 times of the diameter of the suspended drop to uniformly irradiate the suspended drop; adopting a combined bilinear CCD detector to respectively collect first-order rainbow signals and second-order rainbow signals generated by the suspended drop scattering; performing fast Fourier transform filtering on the collected signals, reconstructing a scattering angle distribution diagram after filtering out high-frequency components; extracting the positions and intensities of multiple groups of scattering peak values in the scattering angle distribution diagram, calculating the radius of the suspended drop through the position interval of the multiple groups of peak values, and calculating the vertical direction curvature radius of the suspended drop through the ratio of the multiple groups of peak values of the first-order rainbow and the second-order rainbow. The method breaks through the limitation that the existing light scattering measurement method can only be applied to spherical liquid drops / circular liquid columns, and successfully expands the light scattering measurement technology to the shape parameter measurement of non-spherical liquid drops.