TY - GEN
T1 - Determination of Interphase Thickness in Silicone Nanocomposites from Dielectric Properties
AU - Rempe, Annika Sophie
AU - Kindersberger, Josef
AU - Willner, Elena Marie
AU - Dietz, Hendrik
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/7/5
Y1 - 2020/7/5
N2 - The material properties of polymeric nanocomposites can be modified significantly by the characteristics of the interfacial zone between the polymer and the nanoparticles. The present study analyzes the dielectric response in order to investigate the intermolecular interactions in the interphase at the boundary layer and to quantify them. For this purpose, crosslinked nanocomposites based on polydimethysiloxane and silica nanoparticles with different surface modifications (hydrophilic, hydrophobic) were produced. In the dielectric spectrum of the nanocomposites an additional relaxation is identified that is attributed to the interphase. The volume fraction of this interphase is determined from the dielectric decrement of its relaxation. Moreover, from three-dimensional transmission electron microscopy images, the three-dimensional distribution and the specific surface of the nanofiller is determined. By combining the specific surface with the result for the volume fraction of the interphase, the thickness of the interphase is calculated.
AB - The material properties of polymeric nanocomposites can be modified significantly by the characteristics of the interfacial zone between the polymer and the nanoparticles. The present study analyzes the dielectric response in order to investigate the intermolecular interactions in the interphase at the boundary layer and to quantify them. For this purpose, crosslinked nanocomposites based on polydimethysiloxane and silica nanoparticles with different surface modifications (hydrophilic, hydrophobic) were produced. In the dielectric spectrum of the nanocomposites an additional relaxation is identified that is attributed to the interphase. The volume fraction of this interphase is determined from the dielectric decrement of its relaxation. Moreover, from three-dimensional transmission electron microscopy images, the three-dimensional distribution and the specific surface of the nanofiller is determined. By combining the specific surface with the result for the volume fraction of the interphase, the thickness of the interphase is calculated.
UR - https://www.scopus.com/pages/publications/85101255662
U2 - 10.1109/ICD46958.2020.9341915
DO - 10.1109/ICD46958.2020.9341915
M3 - Conference contribution
AN - SCOPUS:85101255662
T3 - Proceedings of the 2020 IEEE 3rd International Conference on Dielectrics, ICD 2020
SP - 225
EP - 228
BT - Proceedings of the 2020 IEEE 3rd International Conference on Dielectrics, ICD 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 3rd IEEE International Conference on Dielectrics, ICD 2020
Y2 - 5 July 2020 through 9 July 2020
ER -