Morphologically dependent alternating-current and direct-current breakdown strength in silica–polypropylene nanocomposites

Timothy Michael Krentz, Mohammad M. Khani, Michael Bell, Brian C. Benicewicz, J. Keith Nelson, Su Zhao, Henrik Hillborg, Linda S. Schadler

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In this article, we report the synthesis of a new bimodal surface ligand morphology on silica nanoparticles. Combining grafting-to and grafting-from approaches, in this study, we demonstrated the efficacy of anthracene surface modification for improving the dielectric breakdown strength (DBS) under alternating-current and direct-current conditions and that of a matrix-compatible polymer brush for controlling the nanofiller (NF) dispersion. Ligand-modified spherical colloidal SiO2 nanoparticles (∼14 nm in diameter) were mixed into polypropylene, and the resulting dispersion was improved over the unmodified particles, as shown with transmission electron microscopy. The results suggest that the electronic structure of the anthracene-modified particle surface was critical to the improvement in DBS. In addition, the DBS of the composite was shown to depend on the dispersion state of the filler and the mode of stress; this indicated that the individually dispersed nanoparticles were not necessarily the optimal morphology for all stress conditions. Additionally, the precise nature of the matrix-compatible brush was less important than the NF dispersion it produced. The bimodal grafted architectural design has provided a promising solution for the control of the dispersion and surface properties, especially for high-molecular-weight polymer matrices.

Original languageEnglish (US)
Article number44347
JournalJournal of Applied Polymer Science
Volume134
Issue number1
DOIs
StatePublished - Jan 5 2017

Fingerprint

Nanocomposites
Electric breakdown
Anthracene
Brushes
Nanoparticles
Ligands
Architectural design
Polypropylenes
Polymer matrix
Silicon Dioxide
Electronic structure
Surface properties
Surface treatment
Fillers
Polymers
Molecular weight
Silica
Transmission electron microscopy
Composite materials
anthracene

Keywords

  • composites
  • dielectric materials
  • nanotechnology
  • polypropylene

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Krentz, T. M., Khani, M. M., Bell, M., Benicewicz, B. C., Nelson, J. K., Zhao, S., ... Schadler, L. S. (2017). Morphologically dependent alternating-current and direct-current breakdown strength in silica–polypropylene nanocomposites. Journal of Applied Polymer Science, 134(1), [44347]. https://doi.org/10.1002/app.44347

Morphologically dependent alternating-current and direct-current breakdown strength in silica–polypropylene nanocomposites. / Krentz, Timothy Michael; Khani, Mohammad M.; Bell, Michael; Benicewicz, Brian C.; Nelson, J. Keith; Zhao, Su; Hillborg, Henrik; Schadler, Linda S.

In: Journal of Applied Polymer Science, Vol. 134, No. 1, 44347, 05.01.2017.

Research output: Contribution to journalArticle

Krentz, TM, Khani, MM, Bell, M, Benicewicz, BC, Nelson, JK, Zhao, S, Hillborg, H & Schadler, LS 2017, 'Morphologically dependent alternating-current and direct-current breakdown strength in silica–polypropylene nanocomposites', Journal of Applied Polymer Science, vol. 134, no. 1, 44347. https://doi.org/10.1002/app.44347
Krentz, Timothy Michael ; Khani, Mohammad M. ; Bell, Michael ; Benicewicz, Brian C. ; Nelson, J. Keith ; Zhao, Su ; Hillborg, Henrik ; Schadler, Linda S. / Morphologically dependent alternating-current and direct-current breakdown strength in silica–polypropylene nanocomposites. In: Journal of Applied Polymer Science. 2017 ; Vol. 134, No. 1.
@article{6f9b46da69c943538d6bcd2dcfaf1456,
title = "Morphologically dependent alternating-current and direct-current breakdown strength in silica–polypropylene nanocomposites",
abstract = "In this article, we report the synthesis of a new bimodal surface ligand morphology on silica nanoparticles. Combining grafting-to and grafting-from approaches, in this study, we demonstrated the efficacy of anthracene surface modification for improving the dielectric breakdown strength (DBS) under alternating-current and direct-current conditions and that of a matrix-compatible polymer brush for controlling the nanofiller (NF) dispersion. Ligand-modified spherical colloidal SiO2 nanoparticles (∼14 nm in diameter) were mixed into polypropylene, and the resulting dispersion was improved over the unmodified particles, as shown with transmission electron microscopy. The results suggest that the electronic structure of the anthracene-modified particle surface was critical to the improvement in DBS. In addition, the DBS of the composite was shown to depend on the dispersion state of the filler and the mode of stress; this indicated that the individually dispersed nanoparticles were not necessarily the optimal morphology for all stress conditions. Additionally, the precise nature of the matrix-compatible brush was less important than the NF dispersion it produced. The bimodal grafted architectural design has provided a promising solution for the control of the dispersion and surface properties, especially for high-molecular-weight polymer matrices.",
keywords = "composites, dielectric materials, nanotechnology, polypropylene",
author = "Krentz, {Timothy Michael} and Khani, {Mohammad M.} and Michael Bell and Benicewicz, {Brian C.} and Nelson, {J. Keith} and Su Zhao and Henrik Hillborg and Schadler, {Linda S.}",
year = "2017",
month = "1",
day = "5",
doi = "10.1002/app.44347",
language = "English (US)",
volume = "134",
journal = "Journal of Applied Polymer Science",
issn = "0021-8995",
publisher = "John Wiley and Sons Inc.",
number = "1",

}

TY - JOUR

T1 - Morphologically dependent alternating-current and direct-current breakdown strength in silica–polypropylene nanocomposites

AU - Krentz, Timothy Michael

AU - Khani, Mohammad M.

AU - Bell, Michael

AU - Benicewicz, Brian C.

AU - Nelson, J. Keith

AU - Zhao, Su

AU - Hillborg, Henrik

AU - Schadler, Linda S.

PY - 2017/1/5

Y1 - 2017/1/5

N2 - In this article, we report the synthesis of a new bimodal surface ligand morphology on silica nanoparticles. Combining grafting-to and grafting-from approaches, in this study, we demonstrated the efficacy of anthracene surface modification for improving the dielectric breakdown strength (DBS) under alternating-current and direct-current conditions and that of a matrix-compatible polymer brush for controlling the nanofiller (NF) dispersion. Ligand-modified spherical colloidal SiO2 nanoparticles (∼14 nm in diameter) were mixed into polypropylene, and the resulting dispersion was improved over the unmodified particles, as shown with transmission electron microscopy. The results suggest that the electronic structure of the anthracene-modified particle surface was critical to the improvement in DBS. In addition, the DBS of the composite was shown to depend on the dispersion state of the filler and the mode of stress; this indicated that the individually dispersed nanoparticles were not necessarily the optimal morphology for all stress conditions. Additionally, the precise nature of the matrix-compatible brush was less important than the NF dispersion it produced. The bimodal grafted architectural design has provided a promising solution for the control of the dispersion and surface properties, especially for high-molecular-weight polymer matrices.

AB - In this article, we report the synthesis of a new bimodal surface ligand morphology on silica nanoparticles. Combining grafting-to and grafting-from approaches, in this study, we demonstrated the efficacy of anthracene surface modification for improving the dielectric breakdown strength (DBS) under alternating-current and direct-current conditions and that of a matrix-compatible polymer brush for controlling the nanofiller (NF) dispersion. Ligand-modified spherical colloidal SiO2 nanoparticles (∼14 nm in diameter) were mixed into polypropylene, and the resulting dispersion was improved over the unmodified particles, as shown with transmission electron microscopy. The results suggest that the electronic structure of the anthracene-modified particle surface was critical to the improvement in DBS. In addition, the DBS of the composite was shown to depend on the dispersion state of the filler and the mode of stress; this indicated that the individually dispersed nanoparticles were not necessarily the optimal morphology for all stress conditions. Additionally, the precise nature of the matrix-compatible brush was less important than the NF dispersion it produced. The bimodal grafted architectural design has provided a promising solution for the control of the dispersion and surface properties, especially for high-molecular-weight polymer matrices.

KW - composites

KW - dielectric materials

KW - nanotechnology

KW - polypropylene

UR - http://www.scopus.com/inward/record.url?scp=84984863649&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84984863649&partnerID=8YFLogxK

U2 - 10.1002/app.44347

DO - 10.1002/app.44347

M3 - Article

VL - 134

JO - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

SN - 0021-8995

IS - 1

M1 - 44347

ER -