Structure and flow behavior of dilute dispersions of carbon nanotubes in polyacrylonitrile–dimethylsulfoxide solutionстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 августа 2016 г.
Аннотация:Rheological behavior of carbon nanotubes (at the
concentration below the percolation threshold) finely dispersed
in semidilute polyacrylonitrile–dimethylsulfoxide solution
has been studied as a function of the applied pre-shear
stress and discussed in view of possible structural changes
induced by pre-shearing of the samples. The observed effects
have been ascribed to a combination of processes involving
alignment and association of the macromolecules as well as
orientation and association of carbon nanotubes. The effects
caused by the macromolecules alignment and association are
mainly observed at low concentration of the filler and at high
shear stress, whereas the processes involving carbon nanotubes
reorganization are mainly observed at the higher filler
content and at lower pre-shear stress. The nanotubes rearrangement
under shear has been probed via hyphenated rheology–
synchrotron X-ray small-angle scattering
measurement.