Jump to main content
Jump to site search

Issue 22, 2017
Previous Article Next Article

A new mechanism for the low dielectric property of POSS nanocomposites: the key role of interfacial effect

Author affiliations

Abstract

The low dielectric constant (ε) of polyhedral oligomeric silsesquioxanes (POSS) was generally attributed to its porous structure. In this work, we propose a new mechanism for the low ε of the POSS-based nanocomposites from the interfacial effect point of view. The investigation on a typical nanocomposite, polystyrene/POSS, found that POSS molecules take crystallization to form crystalline nanoplatelets (PCPs) in PS. Correspondingly, the dielectric constant can be reduced to around 2.30. A detailed investigation excluded the possible influence of the chain stacking and chain mobility of the polymers on ε. It was demonstrated, for the first time, that the ε shows a high correlation with interface area which is reflected by a rigid amorphous fraction (RAF), thus revealing the key role of the interfacial effect on reducing the low dielectric constant.

Graphical abstract: A new mechanism for the low dielectric property of POSS nanocomposites: the key role of interfacial effect

Back to tab navigation

Publication details

The article was received on 24 Apr 2017, accepted on 11 May 2017 and first published on 11 May 2017


Article type: Paper
DOI: 10.1039/C7CP02678A
Citation: Phys. Chem. Chem. Phys., 2017,19, 14503-14511
  •   Request permissions

    A new mechanism for the low dielectric property of POSS nanocomposites: the key role of interfacial effect

    L. Liu, Y. Yuan, Y. Huang, H. Yu and J. Yang, Phys. Chem. Chem. Phys., 2017, 19, 14503
    DOI: 10.1039/C7CP02678A

Search articles by author

Spotlight

Advertisements