Infrared Spectroscopy of Anionic, Cationic, and Zwitterionic Surfactants

Figure 9

The CH₂ asymmetric and symmetric stretching features for different HPS packing densities. (a) and (b) refer to the CH₂ asymmetric and symmetric features, and (c) refers to the CH₂ scissoring mode.

(a)

(b)

(c)