The purpose of the work is to study the process of synthesis of furfuryl oligomers with high molecular weight at various ratios of furfuryl alcohol and hydroxyl-containing polyether polyol. The influence of the process method on the yield of high-molecular furfuryl oligomer is shown - with a one-step synthesis method with an increase in the amount of furfuryl alcohol from 20 to 50 moles per 1 mole of polyether polyol, the yield of the final product decreases from 75% to 56%, apparently due to high exothermic effects, causing gelation systems. In contrast to the one-time introduction of the catalyst, its dosed introduction allows you to regulate the exothermic effect of the reaction and, thus, prevent premature gelation. Thus, with the gradual addition of a catalyst, the yield of high molecular weight furfuryl oligomer increases from 71.5 to 82.5% when the amount of furfuryl alcohol changes from 20 to 50 moles per 1 mole of polyether polyol taken for synthesis. A study of the curing of synthesized high-molecular furfuryl oligomers showed that with an increase in the molar ratio of furfuryl alcohol: polyether polyol, the yield of the gel fraction increases from 72% to 78%. Thus, the systematic studies carried out made it possible to scientifically substantiate the stepwise synthesis of high-molecular furfuryl oligomers.
| Mualliflar | Boysayid U. SAYIDOV, Latif Ergash ugli Jumanov, М. Г. Алимухамедов, Sherali A. UMAROV, Ф. А. Магрупов |
|---|---|
| Jurnal | Kimyo va kimyo texnologiyasi |
| Nashr sanasi | 2024-05-03 |
| Jild | 2024 |
| Son | 1 |
| Til | en |
| DOI | 10.70189/1992-9498.1497 |
DOI: 10.70189/1992-9498.1497 · Maqolaning asl sahifasi
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