Biobased composites from thermoplastic polyurethane elastomer and cross-linked acrylated-epoxidized soybean oil

Authors: Jong, Lei; Liu, Zengshe - Kevin

Submitted to: American Chemical Society National Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 12/3/2015
Publication Date: 3/13/2016
Citation: Jong, L., Liu, Z. 2016. Biobased composites from thermoplastic polyurethane elastomer and cross-linked acrylated-epoxidized soybean oil [abstract]. American Chemical Society National Meeting. p. 288.

Interpretive Summary:

Technical Abstract: Soybean oil is an important sustainable material. Crosslinked acrylated epoxidized soybean oil (AESO) is brittle without flexibility and the incorporation of thermoplastic polyurethane improves its toughness for industrial applications. The hydrophilic functional groups from both oil and polyurethane contribute to the adhesion of the blend components through the formation of hydrogen bonds. The incorporation of polyurethane into the blend increases the elongation of the blends. A useful tensile strength of 20 MPa with an elongation of 120% was obtained from the hydrogen bonded composites. The temperature dependent storage moduli in the elevated temperature region showed a transition from thermoplastic to thermoset as the amount of AESO increased in the blends. The variation of dynamic shear modulus with the blend composition can be described by different mechanical models with anisotropic phases. The temperature dependent loss tangent reflects the variation of the blend components in the glass transition region. AESO has higher activation energy for thermal degradation than polyurethane. Thermal stability of the blends was improved with the incorporation of AESO.