Small-angle X-ray scattering (SAXS) procedures were performed at the end station of beamline BL23A SWAXS of the Taiwan Light Source, National Synchrotron Radiation Research Center (NSRRC), Hsinchu, Taiwan. Pre-tests were performed using polyethylene and silver behenate to calibrate the scattering intensity and wave vector sensitivity, respectively. The samples were placed 3659 mm from the incident 15 keV X-ray beam (λ = 0.8265 Å) and were exposed to the beam for 10–60 s depending on the measured signal intensity. The scattered radiation was captured using a Pilatus 1M-F area detector and two dimensional SAXS images generated. From these images the scattering intensity was obtained and intensity vs scattering vector (q) plots generated using the program Albula (Dectris, Baden-Dättwil, Switzerland). Where q was ascertained by the equation: q=4πλ−1sinθ where λ is the wavelength of the incident X-ray beam (λ = 1.033Å) and θ is the scattering angle .