(AGENPARL) – LONDON (UNITED KINGDOM), gio 21 gennaio 2021
Polyether polyols as the crucial chemical for the synthesis of polyurethanes have attracted much attention, especially for propylene oxide-based polyether polyols due to the ready availability and good structural diversity . In the present work, microfluidic devices configured with SIMM-V2 micromixer and stainless steel capillary were developed for the continuous and efficient synthesis of propylene oxide-based polyether polyols. For the conversion of propylene oxide higher than 95%, the reaction time was less than 60 s that was significantly shorter than that of the batch reactor. Also, the reaction temperature can be controlled precisely, thereby obtaining high purity polyether polyols products. To identify the maximum performance of the microfluidic devices, while keeping the conversion of PO higher than 95%, the novel process windows of the devices were determined by investigating the relations of reaction temperature and pressure, reaction temperature and residence time, feed flow rate and residence time. The results showed that high quality polyether polyols could be easily prepared in the microfluidic devices under flexible operating conditions. In addition, polyether polyols with higher molecular weights could also be prepared by using a two SIMM-V2 configured microfluidic device. This work showed that the microfluidic devices are promising candidates for the synthesis of polyether polyols in the industry.
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