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

Author(s)

Fonseca, Larissa R. ; Bergman, James A. ; Kessler, Michael R. ; Madbouly, Samy A. ; Lima-Neto, Benedito S.

• Document type: Journal article
• Source: MACROMOLECULAR SYMPOSIA; v. 368, n. 1, p. 10-pg., 2016-10-01.

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 M-w and M-n values and PDI's of 2 and 3 were obtained. The viscoelastic material parameters (G', G'' and eta*) were studied as a function of angular frequency at different temperatures and diol/castor oil compostions. Newtonian behavior was observed for these materials. T-g 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 10wt% of the diol was able to modify the rigid polyurethane, providing an adhesive characteristic to castor oil-based polyurethane. (AU)

• FAPESP's process: 11/12571-7 - Development of [RuCl2(PPh3)2(amine)] complex types for ring opening metathesis polymerization
• Grantee: Larissa Ribeiro da Fonseca
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 12/23948-7 - Correlation between the properties of the polymers and biopolymers obtained by ROMP with [RuCl2(PPh3)2(amine)] complex types
• Grantee: Larissa Ribeiro da Fonseca
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)