Adsorption of polyethylene standards from decalin on liquid chromatography column packings.
Linear polyethylene and isotactic polypropylene standards were injected into columns which contained MFI (SH-300 and silicalite) or faujasite (CBV-780) type zeolites. 1,2,4-Trichlorobenzene, cyclohexanone, 2-ethyl-hexanol, decalin and tetralin were used as mobile phases at 140 degrees C. It was found that polyethylene is fully retained on zeolite SH-300 when decalin is used as a mobile phase. Moreover, polyethylene is partially retained on zeolite SH-300 from tetralin and from 1,2,4-tichlorobenzene, on silicalite from decalin and in a very small extent on zeolite CBV-780 from decalin. Using all other solvents, polyethylene and polypropylene were not retained in any of the columns tested. This is the first experimental observation of polyethylene adsorption from a solvent on a chromatographic stationary phase.
Macko
Tibor
T
German Institute for Polymers, Schlossgartenstr. 6 D-64289 Darmstadt, Germany. tmacko@dki.tu-darmstadt.de
Pasch
Harald
H
Denayer
Joeri F
JF
D000327:Adsorption; D002853:Chromatography, Liquid / Q000295:instrumentation*; D020959:Polyethylene / Q000592:standards*; D012015:Reference Standards
D020959:Polyethylene