High dielectric response in dilute nanocomposites via hierarchical tailored polymer nanostructures

Xin Chen, Qiyan Zhang, Ziyu Liu, Yifei Sun, Q. M. Zhang

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12 Scopus citations

Abstract

This paper presents a hierarchically designed polymer nanocomposite approach in which nanofillers at ultralow volume loading generate large dielectric enhancement in blends of high temperature dielectric polymers with tailored nanostructures. We blend poly(1,4-phenylenen ether sulfone) (PES) with polymers, such as polyetherimide (PEI), that possess more coiled chain conformations to tailor polymer nano-morphologies. Making use of such blends as the matrix, dilute nanocomposites with 0.65 vol. % loading of alumina nanoparticles (20 nm size) generate a marked enhancement in dielectric performance, i.e., raising the dielectric constant K from PES K = 3.9 (and PEI K = 3.2) to the dilute nanocomposites K = 7.6, a much higher enhancement compared with the dilute nanocomposites employing neat polymers as the matrix. The results show that polymer blends with tailored nano-morphologies as the matrix can lead to higher dielectric enhancement in dilute nanocomposites compared with neat polymers as the matrix.

Original languageEnglish (US)
Article number162902
JournalApplied Physics Letters
Volume120
Issue number16
DOIs
StatePublished - Apr 18 2022

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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