Results analysis of sericite and modified sericite

The modified process of the sericite and modified sericite is shown in the Supporting Information. FT-IR spectra are presented (Figure A in S1 Materials), CH3 and CH2 absorption bands is shown as 2920 cm-1and 2850 cm-1. This result shows that the hexadecyl trimethyl ammonium bromide was on the surface of the sericite or went into the interbedded structure of the sericite. After the modification, the sericite was changed from the hydrophile to the lipophilic compound. From FT-IR analytical result, it can be also deduced; crude sericite has been activated (see S1 Materails). (DOC)