The powder X-ray diffraction measurements of pristine and organoขmodified
kaolins were carried out on a XEUSS SAXS/WAXS system with
Fit 2D software using a Genix micro source from Xenocs operated at
50 kV and 0.3 mA with Cu Kα (1.5406 Å) radiation. Silver behenate
was used for distance calibration from sample holder to detector and
the optimized distance was 221.75 mm. To get the well refined spectrum,
samples were exposed to X-ray for 10min. All the measurements
were done in the transmission mode between a range of 2θ (3 to 60).