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Improvement of the Mechanical Properties and Creep Resistance of SBS Block Copolymers by Nanoclay Fillers
Author(s) -
Lietz Siljana,
Yang JingLei,
Bosch Eva,
Sandler Jan K. W.,
Zhang Zhong,
Altstädt Volker
Publication year - 2007
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200600280
Subject(s) - materials science , nanocomposite , organoclay , composite material , ultimate tensile strength , creep , copolymer , ductility (earth science) , thermoplastic elastomer , polymer
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.