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

Macromolecular Symposia - Tập 368 Số 1 - Trang 30-39 - 2016
Larissa R. Fonseca1,2, James A. Bergman1, Michael R. Kessler3, Samy A. Madbouly1, Benedito dos Santos Lima Neto2
1Department of Materials Science and Engineering, Iowa State University, Ames, IA, USA
2Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos, São Paulo, Brazil
3School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, USA

Tóm tắt

SummarySelf‐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.

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Macromolecular Symposia

Tập 368 Số 1

30-39

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