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Synthesis of new polyester polyols from epoxidized vegetable oils and biobased acids
Author(s) -
Caillol Sylvain,
Desroches Myriam,
Boutevin Gilles,
Loubat Cédric,
Auvergne Rémi,
Boutevin Bernard
Publication year - 2012
Publication title -
european journal of lipid science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 94
eISSN - 1438-9312
pISSN - 1438-7697
DOI - 10.1002/ejlt.201200199
Subject(s) - polyol , epoxidized soybean oil , polyester , organic chemistry , lactic acid , oligomer , chemistry , isocyanate , acetic acid , yield (engineering) , soybean oil , materials science , polymer chemistry , polyurethane , raw material , food science , biology , bacteria , genetics , metallurgy
Biobased polyols were synthesized from reaction between epoxidized soybean oil and lactic, glycolic, or acetic acids. Polyols were characterized by NMR, alcohol and acid titration, and SEC. These analyses allowed to determine an average hydroxyl functionality between 4 and 5, with an oligomer content close to 50 wt%. Synthesized polyols were formulated with isocyanate to yield polyurethanes (PUs). Thermal and mechanical properties of obtained materials showed that synthesized polyols lead to rigid and brittle material with Young moduli higher than 900 N/mm 2 at RT and with T g values around 50°C. Practical application: The products of the chemistry described in this contribution, i.e.: polyol from vegetable oils and lactic, glycolic, or acetic acids, provide biobased building blocks for further PUs syntheses by reaction with diisocyanates. The obtained PUs are partially biobased and may be applied as binders and coatings.