Abstract
Abstract We investigated the anionic ring opening polymerization of ethylene oxide using a microflow system with a tubular reactor. Employing alkoxy anions as an initiator, the monoalkyl-ether terminated polyethylene glycols were obtained by the microfluidic system within 30 min of residence time, which is a remarkably shortened reaction time compared with a batch system. The use of a suitable micromixer is important to obtain monoalkyl-ether terminated PEGs in high yields and small PDIs. By comparison with a batch system, the anionic ROP in the microflow was quite smooth and the distribution of the obtained polymer was narrow with the use of MeONa as a catalyst.
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