Frequency and intensity patterns of LAM progression in weakly coupled chains: The case of stearic acid and stearyl alcohol

Abstract

The coupled oscillator model previously described for the interpretation of longitudinal acoustical modes (LAM) of weakly coupled chain molecules has been extended in order to account for the observed frequency and intensity patterns in stearic acid and stearyl alcohol. The model and its general validity are discussed and a specific comparison is made with data obtained from Raman measurements on hexatriacontane (n-C36H74), stearic acid (n-C17H35-COOH), and stearyl alcohol (n-C 18H37OH). © 1984 American Institute of Physics.