| 초록 |
Poly(alkylene oxide) and derivatives are widely used in various scientific and industrial fields. The most extensively employed synthesis technique of polyalkylene oxides (PAO) is anionic ring-opening polymerization. For the anionic ring-opening polymerization of alkylene oxide various side reactions are present. The reason for the side reactions is the relatively high acidity of the alkyl protons of AO leading to different types of termination and chain transfer reactions. In this study, we investigate the side reactions occurring during the anionic ring opening polymerization of butylene oxide at different temperatures by HPLC and MALDI-TOF mass spectrometry. In order to characterize the molecular weight distribution and the end group of the by-products precisely by MALDI MS, polymers with target molecular weights of ~5,000 were synthesized under different reaction temperatures. We found that two major side-reactions occur in the anionic polymerization of PBO. |
