Answer to Question #327935 in Mechanical Engineering for pops

Question

Polyester has a Young's, Modulus of 3.5 GPa and PLGA 1.2 GPa. A polymer blend is prepared with 45:55 mixture (PET:PlGA) . What is the Young's, Modulus of this blend (use mixture rule)

Answer 1

Youngs modulus = Y_PET = 3.5 GPa, Y_GPA = 1.2 GPa

It has mixture of 45:50

Y_m = Y_PET * 0.45 + Y_GPA * 0.55 = 3.5 * 0.45 + 1.2 * 0.55 = 2.24 GPa