Elastomers SEBS triblock

This study concentrated on the effect of carbon black on the characteristics of the thermoplastic elastomers. Figure 5 shows the shear viscosity behavior of three triblock copolymers. The figure also shows the shear thinning behavior of polymers. In the case of carbon black-filled polymers, the slopes are more sharply increased than are those of the raw polymers, and the viscosity increase by carbon black is greater than the values predicted theoretically by Equation 7. The viscosity of SEBS is higher than that of the other polymers. This is apparently attributed to the large segmental incompatibility of SEBS, as previously stated. The addition of carbon black to the raw polymers is frequently induced to increase the viscosity. The reason is that the carbon black particles within the polymer increase the fluid friction. 

An HISPS is a multicomponent blend comprising SPS, PPO, SEES triblock copolymer, and MA-g-SEBS. Controlling the morphology of HISPS is a key point to enhance the mechanical properties. There are a lot of structural factors that should be controlled, for example, the size and the orientation of elastomer domains and the degree of crystallinity in the SPS matrix, and also the interfacial thickness between the domain and the matrix. 

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