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Influence of γ ‐Irradiation on the Deformation Behaviour of Lamellar SBS Triblock Copolymers
Author(s) -
Adhikari Rameshwar,
Henning Sven,
Michler Goerg H.
Publication year - 2002
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20020701)23:10/11<622::aid-marc622>3.0.co;2-5
Subject(s) - lamellar structure , materials science , shearing (physics) , irradiation , copolymer , necking , composite material , transmission electron microscopy , brittleness , scanning electron microscope , polymer , nanotechnology , physics , nuclear physics
The micromechanical deformation behaviour of lamellar styrene/butadiene block copolymers crosslinked by γ ‐irradiation was studied by transmission electron microscopy and scanning electron microscopy. Irrespective of the irradiation dosage, the micromechanical mechanism in these samples is predominantly necking and drawing of glassy lamellae accompanied by shearing in the rubbery phase. However, the samples behave in a brittle fashion at higher irradiation dosages, which is associated with the surface damage caused by γ ‐irradiation.