I have got maximum 40% elongation at break and 5 MPa Tensile strength for ESO based polyurethane sample. I want to enhance the mechanical properties of PU without using any chain extender or petroleum polyol like PEG or PCL-diol etc.
A possible solution maybe is the use of nano particles. There are various kind of nano materials which can be employed in polymeric matrices to produce a nano-composite material with enhanced mechanical properties. you can think about it as a very feasible solution.