Full separation of oligomers in block copolymers of ethylene oxide and propylene oxide |
| |
| Authors: | Muhammad Imran Malik Bernd Trathnigg |
| |
| Affiliation: | 1. Institute of Chemistry, Karl‐Franzens‐University, Graz, Austria. Fax: +43‐316‐380‐9850;2. Central Polymer Lab–Molecular Characteristics (CePOL/MC), Graz, Austria |
| |
| Abstract: | In this study di‐ and triblock copolymers of ethylene oxide (EO) and propylene oxide (PO) are analyzed by using CAP for one block and adsorption for the other block. This gives a complete picture of EO‐ and PO‐based block copolymer with respect to the oligomers of both blocks. A full resolution of the individual oligomers can be achieved for both blocks up to an average molecular weight of 1000–1500 of each block. |
| |
| Keywords: | Amphiphilic block copolymers Critical adsorption point (CAP) Liquid chromatography under critical conditions (LCCC) Oligomers |
|
