Next Article in Journal
The Use of POSS-Based Nanoadditives for Cable-Grade PVC: Effects on Its Thermal Stability
Previous Article in Journal
Thermal Conductivity and Mechanical Properties of Thermoplastic Polyurethane-/Silane-Modified Al2O3 Composite Fabricated via Melt Compounding
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessArticle

Influence of Surface Modified Nanodiamonds on Dielectric and Mechanical Properties of Silicone Composites

Materials Science and Environmental Engineering, Tampere University, P.O. Box 589, FI-33014 Tampere, Finland
Elastomer Technology and Engineering, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
Institute of Polymer and Dye Technology, Lodz University of Technology, Stefanowskiego 12/16, 90-924 Lodz, Poland
Author to whom correspondence should be addressed.
Polymers 2019, 11(7), 1104;
Received: 11 June 2019 / Revised: 27 June 2019 / Accepted: 27 June 2019 / Published: 29 June 2019
PDF [2334 KB, uploaded 29 June 2019]


Detonation nanodiamonds, also known as ultradispersed diamonds, possess versatile chemically active surfaces, which can be adjusted to improve their interaction with elastomers. Such improvements can result in decreased dielectric and viscous losses of the composites without compromising other in-rubber properties, thus making the composites suitable for new demanding applications, such as energy harvesting. However, in most cases, surface modification of nanodiamonds requires the use of strong chemicals and high temperatures. The present study offers a less time-consuming functionalization method at 40 °C via reaction between the epoxy-rings of the modifier and carboxylic groups at the nanodiamond surface. This allows decorating the nanodiamond surface with chemical groups that are able to participate in the crosslinking reaction, thus creating strong interaction between filler and elastomer. Addition of 0.1 phr (parts per hundred rubber) of modified nanodiamonds into the silicone matrix results in about fivefold decreased electric losses at 1 Hz due to a reduced conductivity. Moreover, the mechanical hysteresis loss is reduced more than 50% and dynamic loss tangent at ambient temperature is lowered. Therefore, such materials are recommended for the dielectric energy harvesting application, and they are expected to increase its efficiency. View Full-Text
Keywords: nanodiamonds; surface modification; silicone; dielectric spectroscopy nanodiamonds; surface modification; silicone; dielectric spectroscopy

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material


Share & Cite This Article

MDPI and ACS Style

Shakun, A.; Anyszka, R.; Sarlin, E.; Blume, A.; Vuorinen, J. Influence of Surface Modified Nanodiamonds on Dielectric and Mechanical Properties of Silicone Composites. Polymers 2019, 11, 1104.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top