Abstract
A polymer membrane network structure is comprised of primary structural macromolecular units. The scattering for the individual primary units that make up the network structure and the scattering due to correlation of primary structural units can be probed using the small-angle scattering technique. In the small-angle scattering, the intensity of scattering, I(Q), is collected as a function of wave vector (Q) as I(Q)∞P(Q)S(Q), where P(Q) is the form factor that reflects the distribution of scattering material in the scattering particle, and S(Q) is the structure factor that relates to the spatial distribution of the scattering particles in the surrounding medium. The Q is defined as Q=(4π/λ) sinθ, where λ is the wavelength and 2θ is scattering angle and it is related as Q=2π/d to the d-spacing between scattering objects in a material by Bragg's law.
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