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- Title
Self-Metathesis of 10-Undecen-1-Ol with Ru-Amine-Based Complex for Preparing the Soft Segment and Chain Extender of Novel Castor Oil-Based Polyurethanes.
- Authors
Fonseca, Larissa R.; Bergman, James A.; Kessler, Michael R.; Madbouly, Samy A.; Lima‐Neto, Benedito S.
- Abstract
Self-metathesis of the terminal olefin in 10-undecen-1-ol was conducted in the presence of [RuCl2(PPh3)2(perhydroazepine)] complex and ethyl diazoacetate (EDA) to form a bioderived diol. The diol was utilized as soft segment and chain extender in polyurethane reactions with castor oil. Polymers with high Mw and Mn values and PDI's of 2 and 3 were obtained. The viscoelastic material parameters (G′, G″ and η*) were studied as a function of angular frequency at different temperatures and diol/castor oil compostions. Newtonian behavior was observed for these materials. Tg values were more negative when increasing the diol percentage because the material became more viscoelastic. At only 10 wt% of the diol, an adhesive characteristic was observed in the castor oil-based polyurethane. Modifying the castol oil-based polyurethane with 10 wt% of the diol was able to modify the rigid polyurethane, providing an adhesive characteristic to castor oil-based polyurethane.
- Subjects
CASTOR oil; METATHESIS reactions; ALKENE synthesis; POLYURETHANES; GLYCOL synthesis; VISCOELASTICITY
- Publication
Macromolecular Symposia, 2016, Vol 368, Issue 1, p30
- ISSN
1022-1360
- Publication type
Article
- DOI
10.1002/masy.201500173