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Lithium stearate phase transitions

Broad-line nuclear magnetic resonance has been used to study melting in stearic acid and a mesomorphic crystalline to waxy) phase transition in lithium stearate. Extensive motion, liquidlike, though less extensive than that in an isotropic free-flowing liquid, takes place within the system below the melting point of stearic acid or the crystalline to waxy phase transition of lithium stearate. The amount of liquid-like character, as measured by the intensity of a narrow component in the NMR spectrum relative to the total intensity of the whole spectrum, depends on the presence of impurities in the system and even more significantly on whether and how many times the sample has been melted. [Pg.20]

The question arises as to what the behavior is if the lithium stearate is heated only through the crystalline to waxy phase transition and then... [Pg.30]

Figure 8. Spectra for unfused lithium stearate sample taken through mesomorphic phase transition, cooled to 137°C., and heated again... Figure 8. Spectra for unfused lithium stearate sample taken through mesomorphic phase transition, cooled to 137°C., and heated again...

See other pages where Lithium stearate phase transitions is mentioned: [Pg.527]    [Pg.21]    [Pg.28]    [Pg.30]    [Pg.31]    [Pg.32]    [Pg.531]    [Pg.73]   
See also in sourсe #XX -- [ Pg.21 ]




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