Abstract
This chapter emphasizes on the rheological behaviors of three styrene copolymers: SBS, SIS, and SEBS. These materials are considered to be thermoplastic elastomers as they combine the hard and soft segments of molecules in the microstructure. The polystyrene domains (hard segment), which are chemically bound to rubbery segments, function as physical cross-links. The objective of this chapter is to highlight the die extrusion behavior of block copolymer thermoplastic elastomers filled with carbon black. Thus, shear viscosity-shear rate behavior, extrudate swell, and Couette correction, which is related to the elastic property of polymeric materials of carbon black-filled styrene copolymer, were compared to those of nonfilled pure polymers to study the rheological characteristics of thermoplastic elastomers. The shear viscosity was increased by the addition of carbon black while the Couette correction was decreased. Carbon black suppressed the die swell and extrudate distortion of styrene copolymers. The second, more important objective of this chapter is to stimulate further research in this field.
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