Fig. 2. Guinier plots of small-angle x-ray scattering data for montmorillonite in dilute suspensions with varying amounts of hexadecyltrimethylammonium bromide adsorbed. The Guinier Approximation states that: ln[I(q)q²] = constant – R²_gq² for thin layer scatters, where CEC = cation exchange capacity, I = intensity, q = the scattering vector, and R_g is the radius of gyration for thickness.

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