Region I corresponds to SAXS and we interpret it as a scattering from a very large interface such as surfaces of particles, which is infinitely large from a point of view of the measurement i.e. diameter >> 300 nm. A smooth interface would yield exponent A=4, while in fact we often observe 3<A<=4, which points to the presence of an evolving rough surface fractal-like interface . On the other hand, at an upper limit of the q-range, region III is WAXS and represents the (supra)molecular-level structure of the polymer, where the broad peaks originate from a long-range semi-order in which the characteristic period d = 2π/qpeak. This most likely represents the structure of a polymer backbone, and the position of both peaks as such constitutes a molecular "fingerprint" of the material. Finally, region II is a transition zone between particle length-scales and the molecular length-scales (i.e. supramolecular) and depicts most likely the secondary and/or higher-level hierarchies formed by a polymer backbone. To model the scattering features, we used the following expression for the intensity (Eq. 1):