ISSN:
1612-1112
Keywords:
Supercritical fluid chromatography
;
Styrene oligomers
;
Semipreparative fractionation
;
Capacity ratios vs temperature
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary In supercritical fluid chromatography (SFC), the elution behavior of styrene oligomers in pentane depends greatly on the degree of oligomerization, n. The influence of capacity ratio, k′, on the lower oligomers up to about n=11 resembles the behavior of other substrates of low molecular weight, like aromatic hydrocarbons. Thus, with pentane of 100 bar and below, minima are found in plots of k′ versus temperature. In contrast, the k′ of oligomers of higher molecular weight (n〉11) increase monotonously with increasing temperature. The studies were performed using oligostyrene fractions obtained by semipreparative SFC fractionation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02310416
