A simultaneous FT-Raman-DSC (SRD) study of polymorphism in sn-1,3-distearoyl-2-oleoylglycerol (SOS)

Sprunt, John C., Jayasooriya, Upali A. and Wilson, Reginald H. (2000) A simultaneous FT-Raman-DSC (SRD) study of polymorphism in sn-1,3-distearoyl-2-oleoylglycerol (SOS). Physical Chemistry Chemical Physics, 2 (19). pp. 4299-4305. ISSN 1463-9084

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Abstract

The simultaneous FT-Raman-differential scanning calorimetry (SRD) technique is described, which allows FT-Raman spectra to be collected from thermally sensitive samples with a very low power density at the sample surface, immediately followed by an in situ DSC melting curve. This gives unambiguous characterisation of samples which are thermally sensitive or which could be structurally transformed by an incident high power density laser beam. In the current work, SRD has been applied to a study of the structural polymorphs of the triglyceride 1,3-distearoyl-2-oleoylglycerol (SOS). SRD analysis shows DSC heating curves with onset melting points and features identifying the polymorphs produced as alpha, gamma, beta', beta(2) and beta(1), conforming well to literature thermal behaviour. Interpretation of the corresponding Raman spectra for these polymorphs provides confirmation of existing structural models in the literature based on other analytical techniques.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Chemistry
UEA Research Groups:	Faculty of Science > Research Groups > Physical and Analytical Chemistry (former - to 2017)
Depositing User:	Rachel Smith
Date Deposited:	09 May 2011 11:34
Last Modified:	24 Oct 2022 03:56
URI:	https://ueaeprints.uea.ac.uk/id/eprint/29776
DOI:	10.1039/B003894F

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