Figure 5.

(A) Wax phase transition curves for OO oleyloleate, PO palmityloleate, PP palmitylpalmitate, SP sterylpalmitate. (●) Heating curve; (○) cooling curve. Lines are the fit of the data to equation 1 in Borchman et al.³⁶ The lower the CH₂ symmetric stretching frequency, the more ordered the wax hydrocarbon chains. (B) Melting curve for sterylpalmitate. The scale is enlarged from (A) so that hysteresis between the cooling (○) and heating (●) curves can be observed. (C) Equal molar mixture of sterylpalmitate and oleyloleate (●) heating and (○) cooling curve. Sterylpalmitate:oleyloleate:cholesterylpalmitate 2:2:1 (m:m:m) where m is moles. (▴) heating curve, (▵) cooling curve. (D) Enlargement of the scale in (C).