TY - JOUR
T1 - Effects of modifier addition and temperature variation in SFE of polymeric materials
AU - Lou, X.W.
AU - Janssen, J.G.M.
AU - Cramers, C.A.M.G.
PY - 1996
Y1 - 1996
N2 - The effects of modifier addition and temperature variation on the supercritical fluid extraction of nylon-6 and poly(1,4-butylene terephthalate) samples are discussed. The modifiers studied include hexane, chloroform, methanol, and benzene. The influence of experimental parameters, such as extraction temperature and pressure, static time, and supercritical fluid flow rate, are investigated systematically with both pure and modified carbon dioxide. The addition of a suitable modifier results in significantly enhanced extraction rates, particularly at low extraction temperatures. A simple experimental setup for the introduction of additional volumes of modifier during the extraction was developed and evaluated. Guidelines for the optimization of the supercritical fluid extraction of polymeric samples are given.
AB - The effects of modifier addition and temperature variation on the supercritical fluid extraction of nylon-6 and poly(1,4-butylene terephthalate) samples are discussed. The modifiers studied include hexane, chloroform, methanol, and benzene. The influence of experimental parameters, such as extraction temperature and pressure, static time, and supercritical fluid flow rate, are investigated systematically with both pure and modified carbon dioxide. The addition of a suitable modifier results in significantly enhanced extraction rates, particularly at low extraction temperatures. A simple experimental setup for the introduction of additional volumes of modifier during the extraction was developed and evaluated. Guidelines for the optimization of the supercritical fluid extraction of polymeric samples are given.
U2 - 10.1093/chromsci/34.6.282
DO - 10.1093/chromsci/34.6.282
M3 - Article
SN - 0021-9665
VL - 34
SP - 282
EP - 290
JO - Journal of Chromatographic Science
JF - Journal of Chromatographic Science
IS - 6
ER -