NDLI: Supercritical fluid extraction of plasticizers in poly(vinyl butyral) (PVB) and analysis by supercritical fluid chromatography

Content Provider	Springer Nature Link
Author	Ude, M. Ashraf Khorassani, M. Taylor, L. T.
Copyright Year	2002
Abstract	This paper describes the quantitative extraction of various plasticizers in poly(vinyl butyral) (PVB) using a supercritical fluid. Extraction pressure, temperature, and contact time were varied in order to determine the optimum extraction conditions. The effects of CO2 flow rate and the volume of an ethyl acetate matrix modifier were examined. SFE optimum yield at 45 MPa, 120 °C and 120 minutes was compared to the value obtained via a conventional Soxhlet extraction method. Mass balance studies performed on the SFE process accounted for both recovered and loss extract. This approach provided a good indication of the efficiency of the extraction process.The extract was analyzed via off-line supercritical fluid chromatography (SFC) using both packed column (pSFC) and capillary column (cSFC) with flame ionization detection (FID). The plasticizers were identified as dihexyladipate (DHA) and triethylene glycol-di-2-ethyl hexanote (TEGH). The results showed that extracted DHA and TEGH were both separated by packed and capillary SFC. The separation times were faster in pSFC than in cSFC, but cSFC offered higher separation efficiency with less impurity eluants.
Starting Page	743
Ending Page	748
Page Count	6
File Format	PDF
ISSN	00095893
Journal	Chromatographia
Volume Number	55
Issue Number	11-12
e-ISSN	16121112
Language	English
Publisher	Vieweg Verlag
Publisher Date	2002-01-01
Publisher Place	Wiesbaden
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Supercritical fluid chromatography Supercritical fluid extraction Poly(vinyl butyral) Plasticizers Dihexyladipate Triethylene glycol-di-ethyl hexanote Analytical Chemistry Organic Chemistry Pharmacy Biochemistry Plant Sciences Measurement Science, Instrumentation
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Analytical Chemistry Biochemistry Clinical Biochemistry

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