5流变特性缠结偶联理论是固态测定线性聚合物材料粘弹行为的中心问题。增加的长支链进一步改变了弹性体的流动特性。已有报道,在低的总相对分子质量下,引入支链通过降低粘度会改变许多聚合物的线性粘弹行为。然而,当支链的相对分子质量大于缠结相对分子质量(Me)时,观察到了低剪 5 Rheological properties The theory of entanglement coupling is the central issue for the solid state determination of the viscoelastic behavior of linear polymeric materials. The increased long chain branching further changes the flow characteristics of the elastomer. It has been reported that the introduction of branches at low total relative molecular mass can change the linear viscoelastic behavior of many polymers by decreasing the viscosity. However, when the relative molecular mass of the branches is larger than the entanglement relative molecular mass (Me), low shear