LIGHT SCATTERING IN AMORPHOUS MEDIA EXPERIMENTAL METHOD

The paper describes the light scattering method used for determining the structure of solid polymers. A photographic technique for measuring the angular distribution of scattered intensity is discussed as well as the main sources of systematic error and their correction. Also the principle of measuring the total scattering cross section, required in order to obtain the permittivity’s variance, is outlined. The correlation function is determined by comparing the angular distribution of intensity with values given in reference tables containing the Fourier transform of the most common correlation functions. Subsequently the permittivity’s variance can be calculated easily as indicated. A few examples are given. © 1969 Taylor & Francis Group, LLC.