The ascorbyl palmitate - water system: phase diagram and state of water

ERICA P. SCHULZ; PAULA V. MESSINA; PALMA S.D.; ALLEMANDI D. A.; PABLO C. SCHULZ

ELSEVIER SCIENCE BV

Año: 2011 vol. 375 p. 178 - 178

font size="1"> This workaddressestheascorbylpalmitate(Asc16)aqueoussystems.Ithasbeenstudiedthroughdif- ferential scanningcalorimetry(DSC)andpolarizingmicroscopy(PM)atdifferenttemperaturesovera wide rangeofconcentrations(weightfractions(w/w)between0.05and1.0),allowingthedetermina- tion ofacompletephasediagram.Whenpossible,thefindingswerecorroboratedwithliteraturedata. Systems below C¡Ö0.48 wtfractionshowhydratedcrystalsinanisotropicliquid,whichleadtoalamel- lar liquidcrystalwhenheatedtoabout60 ◦C. Abovethisconcentration,thephasetransitionoccursat about 80