Structure-property relationships in polymer nanocomposites based on cross-linked polyurethanes and carbon nanotubes

• Published in: Functional Materials
• Date: 2015
• Main Authors: Lysenkov, E.A., Gagolkina, Z.O., Lobko, E.V., Yakovlev, Yu.V., Nesin, S.D., Klepko, V.V.
• Format: Article
• Language: English
• Published: НТК «Інститут монокристалів» НАН України 2015
• Subjects: Characterization and properties
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/119380
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Structure-property relationships in polymer nanocomposites based on cross-linked polyurethanes and carbon nanotubes / E.A. Lysenkov, Z.O. Gagolkina, E.V. Lobko, Yu.V. Yakovlev, S.D. Nesin, V.V. Klepko // Functional Materials. — 2015. — Т. 22, № 3. — С. 342-349. — Бібліогр.: 30 назв. — англ.

The results of experimental and calculation researches of structure, electric and thermophysical characteristics of polymer nanocomposites based on cross-linked polyurethanes (CPU) and carbon nanotubes (CNT) are presented. It is shown that the CPU-CNT systems have a structure with two fractal levels. It is discovered that the CPU-CNT nanocomposites show a percolation behavior, and the concentration dependence of electric- and heat-conductivity are well described in the framework of scaling approach. It is shown that a percolation threshold for these systems is 0.6 %. Formation of the percolation net from CNT, when the content of nanotubes is 0.6 %, was confirmed by the optical microscopy results.