“…160 "C. The poly(amino acids), poly(y-ethyl-L-glutamate), which are used as artificial leather have been applied as stationary phases for the separation of a wide variety of compounds (752). A cross-linked, silicacontaining polymer made of Cab-0-Si1 Grade M5 silica, a C36 dimer diisocyanate made by General Mills, and diethylenetriamine was highly efficient as a thermally stable stationary phase (227). Ottenstein and Supina (1223) separated C14-C20 fatty acids in the free form using DEGS-PS for the most complete separation and a new polyester designated SP-216-PS for the fastest separation.…”