Soybean oil is an important sustainable material. Crosslinked acrylated epoxidized soybean oil (AESO) is brittle and the incorporation of thermoplastic polyurethane improves its toughness. 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. The best tensile strength of 20 MPa with an elongation of 120% was obtained from the hydrogen bonded composites for molded plastic objects in potential damping and surface applications. 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 dynamic shear modulus increased substantially as the AESO content in the blend increased. 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. Published 2016. This article is a U. S. Government work and is in the public domain in the USA.