Abstract
The diffraction behavior of crystalline colloidal arrays formed by poly(styrene-co-sodium styrenesulfonate) particles
Highlights
Latex particles with high surface charges dispersed in water can self-assemble into ordered structures forming crystalline colloidal arrays (CCAs)
The slightly larger particle size obtained by dynamic light scattering (DLS) may be due to the hydrated state of the sample which has a viscous drag of a counterion shell around the colloidal particle in water.[32]
Two diffraction peaks were observed for the CCA at various particle concentrations ranging from 3.10 to 9.30 wt% (Figure 3): One appeared in a shorter wavelength region (λ1) and the other appeared at longer wavelengths (λ2)
Summary
Latex particles with high surface charges dispersed in water can self-assemble into ordered structures forming crystalline colloidal arrays (CCAs). Two diffraction peaks were observed for the CCA at various particle concentrations ranging from 3.10 to 9.30 wt% (Figure 3): One appeared in a shorter wavelength region (λ1) and the other appeared at longer wavelengths (λ2). When the latex particle emulsion was diluted from 9.30 to 3.10 wt%, both diffraction peaks showed a gradual shift from shorter to longer wavelengths (Figure 3).
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