“…On the contrary to the case of E a , no studies about the effect of microstructure on the melt elasticity in the linear viscoelastic regime (in terms of the elastic modulus, G ′, or phase angle δ ) have been published. Indeed, there is abundant literature on the effect of molecular weight, polydispersity, and long-chain branching of homopolymers [ 33 , 34 , 35 , 39 , 40 , 46 , 47 , 48 , 49 , 50 ], as well on the effect of interfaces in block copolymers and immiscible blends [ 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 ], but the literature about the effect of the chemical structure of the monomer on melt elasticity of polymers is inexistent. As stated above, it is known that broadening the molecular weight distribution leads to an increase of the melt elasticity (phase angle δ reduction), but this cannot be the reason of the δ minimum because combining the data of Table 1 and the results of Figure 6 no correlation between the corresponding values of P.I.…”