Otherwise, the SOR was violated due to the contribution of form birefringence in the case of immiscible blends.
However, for immiscible blends, the nontrivial form birefringence will play an important role.
This can be explained in terms of the different values for C as well as the existence of form birefringence.
Because it is of more interest to investigate the birefringence of the blends in the amorphous phase in order to see the effect of the form birefringence, only the data before crystallization starts are shown.
the form birefringence is zero, suggesting miscibility of the mLLDPE-2/LDPE-2 blends as discussed elsewhere .