Simultaneous dual-mechanism separation of a semicrystalline polymer blend on large-pore silica by temperature- programmed packed capillary liquid chromatography
| Title |
Simultaneous dual-mechanism separation of a semicrystalline polymer blend on large-pore silica by temperature- programmed packed capillary liquid chromatography |
| Publication year |
2001 |
| General note |
DOI 10.1002/1615-9314(20010201)24:2<136::AID-JSSC136>3.0.CO;2-T |
| Language |
English |
| Author |
Molander, Paal |
| Co-Authors |
Greibrokk, Tyge - Ommundsen, Espen (Norner) - Iveland, Asbjørn (Norner) |
| Source |
J. Sep. Sci. 2001, 24 (2), 2001, 136-140 |
| Abstract |
An extruded polymer blend product, containing high molecular weight semicrystalline polypropylene and polyphenylene ether grafted to maleic anhydride, has been re-solved by the use of temperature-programmed packed capillary liquid chromatography with evaporative laser light scattering detection. A large-pore neat silica stationary phase material provided a dual-mechanism separation simultaneously on the same column, eluting polypropylene according to a size exclusion mechanism and polyphen-ylene ether according to normal phase interaction. Packed capillary columns of 0.32 mm ID and 100-cm length with rapid temperature programming from 110 to 170 °C were required in order to resolve the materials, offering efficient gradient elution of analytes that are not suitable for traditional solvent gradient elution. |