Open-cell bio-polyurethane foams based on bio-polyols from used cooking oil was written by Polaczek, Krzysztof;Kuranska, Maria;Prociak, Aleksander. And the article was included in Journal of Cleaner Production in 2022.Name: 2,2′-Oxybis(ethan-1-ol) This article mentions the following:
Used cooking oil is a widely available and inexpensive waste with a high application potential as a feedstock for the bio-based polyurethane production Usually, bio-polyols from vegetable oils have higher viscosity and lower hydroxyl values compared to com. petrochem. polyols, which limits their usefulness. This article reports on the development of open-cell polyurethane foam systems wherein 100% of the polyol components were bio-polyols obtained from used cooking oil. What is particularly considered is the effect of bio-polyol properties (mol. weight, viscosity and hydroxyl value) on the properties of the final open-cell polyurethane systems – apparent d., thermal conductivity coefficient, content of closed cells, mech. strength, brittleness and short-term water absorption. It was found that the key step in the synthesis of bio-polyols designed for open-cell polyurethane foams is the epoxidation reaction. The epoxy value has a significant effect on the occurrence of side reactions (mainly oligomerization) during the oxirane ring-opening process determining the properties of bio-polyols. The resulting open-cell foams were characterized by apparent densities from 12.4 to 13.3 kg/m3, thermal conductivity coefficients from 36.6 to 38.2 mW/m·K, and closed cell contents below 10%, which makes them comparable to com. products. The results demonstrate that used cooking oil-based polyols can provide an alternative starting material for open-cell polyurethane foam production In the experiment, the researchers used many compounds, for example, 2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6Name: 2,2′-Oxybis(ethan-1-ol)).
2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.Name: 2,2′-Oxybis(ethan-1-ol)
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts