A new Guinier-Porod model

A new Guinier-Porod empirical model is introduced to fit small-angle scattering data from spherical and nonspherical objects such as rods or platelets. This model is used to fit small-angle scattering data from a Pluronic solution that sequentially forms unimers, spherical micelles, cylindrical micelles and lamellar micelles on heating.

Analysis of the Beaucage model

The Beaucage model has been analyzed carefully. A note of caution is sounded about undesired artefacts produced by this model.