A FOURIER-TRANSFORM INFRARED STUDY OF THE COAGEL TO MICELLE TRANSITION OF CETYLTRIMETHYLAMMONIUM BROMIDE

摘要: Abstract A 30 wt% cetyltrimethylammonium bromide-water system was studied by using FT-IR spectroscopy. transition from the coagel to micelle phase found occur at 300 K. In phase, methylene chains are packed in parallel with each other bent end-methyl trans -gauche and a few kink GTG′ (gauche- -gauche) defects. The rotation of polar headgroup is highly restricted fixed state. micellar there GTG double-gauche defects which substantially destroy chain axis. internal headgroup, as well rotational motion (CH 3 ) N + whole around axis, occurs hexagonal lattice. Both hydrophobic hydrocarbon hydrophilic headgroups CTAB fused states.