Predicting Mechanical Performance of Polymers

Supramolecular Thermoplastic with 0.5 Pa·s Melt Viscosity

“…In a2−a4, the birefringence color is quite uniform throughout the sample until the fracture, whereas in b2−b4 samples there is evidence of shear banding and necking before break, characteristic of plastic deformation. 18 Compounds a2−a4 have interesting mechanical properties; in particular, the stress at break comprised between 5 and 12 MPa. Thus, sample a4, in absence of annealing, has an elongation at break of 24% and a stress at break of 7.5 MPa.…”

“…On stretching, the mechanical birefringence appears, but there is a difference between both series. In a2 – a4 , the birefringence color is quite uniform throughout the sample until the fracture, whereas in b2 – b4 samples there is evidence of shear banding and necking before break, characteristic of plastic deformation . Compounds a2 – a4 have interesting mechanical properties; in particular, the stress at break comprised between 5 and 12 MPa.…”