Deformation of glassy polycarbonate and polystyrene: the influence of chemical structure and local environment
نویسندگان
چکیده
Understanding the mechanism of deformation is very important in various applications. Although the stress–strain behavior of crystals and glasses are similar, the mechanism of deformation is very different. We used molecular dynamics to study polycarbonate and polystyrene under constant external loads. The results indicate that high atomic/segmental mobility and low local density enable the formation (nucleation) of highly deformed regions that grow to form plastic defects, and the effect of chemical structure was found to dominate the deformation mechanism q 2005 Elsevier Ltd. All rights reserved.
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Amorphous-amorphous transition in glassy polymers subjected to cold rolling studied by means of positron annihilation lifetime spectroscopy.
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