Enzymatic synthesis of low molecular weight polyols form methylesters of ricinoleic acid

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46504711%3A_____%2F10%3A%230000278" target="_blank" >RIV/46504711:_____/10:#0000278 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Enzymatic synthesis of low molecular weight polyols form methylesters of ricinoleic acid
Original language description
In this work the catalytic efficiency of immobilized Candida antarctica lipase B (Novozym 435) for the transesterification reaction of methylesters of hydroxyfunctional fatty acids and low molecular weight di- and polyols was studied. The starting raw materials for the preparation of model samples were methylesters of ricinoleic acid and growing centers of 1,3-propanediol, trimethylolpropane and sorbitol. The reaction was catalyzed with 5 and 10 wt. % of the enzyme and carried out at 65°C in bulk and pressure reduced to 250 mbar in order to remove methanol as a side condensation product. The reaction was studied by molecular weight distribution development within 12 h period using gel permeation chromatography. The results showed that Novozyme 435 preferably catalyses condensation of primary hydroxyl groups of low molecular weight di- and polyols while reaction of secondary hydroxyl groups of methylesters of ricinoleic acid is suppressed. The selective catalytic efficiency of Novozyme
Czech name
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Czech description
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Project
<a href="/en/project/2A-2TP1%2F135" target="_blank" >2A-2TP1/135: *Novel polyfunctional hybrid polymers from renewable and recyclable raw materials with potential utilization of enzyme catalysts and nanoparticles.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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