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Improvement of the Mechanical Properties and Creep Resistance of SBS Block Copolymers by Nanoclay Fillers

✍ Scribed by Siljana Lietz; Jing-Lei Yang; Eva Bosch; Jan K. W. Sandler; Zhong Zhang; Volker Altstädt

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
453 KB
Volume
292
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

SBS nanocomposites based on a SBS triblock copolymer containing different weight fractions of a commercial Cloisite 20A organoclay were prepared by melt‐processing. Extensive electron microscopy as well as WAXS and static tensile and tensile creep tests were used to evaluate the resulting morphological and mechanical properties of the nanocomposites. The nanocomposite morphology is characterized by a combination of intercalated and partly exfoliated clay platelets with occasional clay aggregates present at higher clay contents; nanocomposite features that are reflected by the results of both the static tensile as well as the tensile creep tests at room temperature. For this particular thermoplastic elastomer nanocomposite system, well dispersed nanoclays lead to an enhanced stiffness and ductility; effects that induce promising improvements in nanocomposite creep performance.

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