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Certain effects of melt‐shearing and cooling on the stress‐strain behavior of thermoplastic elastomers
Author(s) -
Charrier JeanMichel,
Ranchoux Robert J. P.
Publication year - 1971
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760110506
Subject(s) - materials science , shearing (physics) , composite material , thermoplastic elastomer , elastomer , polybutadiene , thermoplastic , molding (decorative) , annealing (glass) , anisotropy , extrusion , polystyrene , extrusion moulding , polymer , copolymer , optics , physics
The peculiar behavior of thermoplastic elastomers in molding suggested that the processing steps (mainly shearing) to which the material had been submitted had a great influence on the morphology. Experiments were carried out on two polysstyrene‐polybutadiene‐polystyrene elastomers. The effects of melt‐shearing and cooling were examined both by mechanical testing and low angle X‐ray scattering. Melt‐shearing creates a marked morphological anisotropy but a form of annealing can occur at sufficiently high temperatures.