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, Asbj??rn (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. |