najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2015-6-4-570-582najo-1062Research ArticleREGULAR PAPERSREGULAR PAPERSDielectric relaxation of fulleroid materials filled PA6 composites and the study of its mechanical performanceDielectric relaxation of fulleroid materials filled PA6 composites and the study of its mechanical performanceSinitsinA. N.SinitsinA. N.

Kronverkskiy pr., 49, 197101 St. Petersburg

Kronverkskiy pr., 49, 197101 St. Petersburg

lyubomirov85@mail.ruZuevV. V.ZuevV. V.

Kronverkskiy pr., 49, 197101 St. Petersburg

Bolshoi pr. 31, 199004 St. Petersburg

Kronverkskiy pr., 49, 197101 St. Petersburg

Bolshoi pr. 31, 199004 St. Petersburg

zuev@hq.macro.ruITMO UniversityITMO UniversityITMO University; Institute of Macromolecular Compounds of the Russian Academy of SciencesITMO University; Institute of Macromolecular Compounds of the Russian Academy of Sciences20151608202564570582Copyright © Sinitsin A.N., Zuev V.V., 20252025Sinitsin A.N., Zuev V.V.Sinitsin A.N., Zuev V.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1062

The effect of fulleroid materials (fullerene C60 and fullerene soot which is used for fullerenes production) on the mechanical properties of polymer nanocomposites based on polyamide 6 (PA6) was investigated. Composites were synthesized by direct mixing in an extruder. Dielectric spectroscopy was used to investigate the influence of nanoparticles on relaxation processes in the polymer matrix. It is found that the segmental relaxation processes becomes faster with the addition of fullerene C60. In contrast, the secondary processes of PA6/fullerene C60 nanocomposites were observed to slow down with the addition of fullerene C60. This means that the local ‘molecular stiffness’ is increased, and a phenomenological link between the secondary relaxation times and the mechanical properties explains the increase in the Young’s modulus of the nanocomposites upon the addition of C60. These observations suggest that nanoparticles can have a qualitatively different effect on the matrix polymer dynamics at different length scales, and caution must be taken in comparing the changes in the dynamics associated with different relaxation processes.

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The authors declare that there are no conflicts of interest present.