Multifunctional fiberglass-reinforced PMMA-BaTiO3 structural/dielectric composites

Eduard A. Stefanescu; Xiaoli Tan; Zhiqun Lin; Nicola Bowler; Michael R. Kessler

doi:10.1016/j.polymer.2011.02.050

Multifunctional fiberglass-reinforced PMMA-BaTiO₃ structural/dielectric composites

Eduard A. Stefanescu, Xiaoli Tan, Zhiqun Lin, Nicola Bowler, Michael R. Kessler

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

73 Scopus citations

Abstract

Fiberglass-reinforced polymer composites were investigated for potential use as structural dielectrics in multifunctional capacitors that require simultaneous excellent mechanical properties and good energy storage characteristics. Composites were fabricated employing poly(methyl methacrylate), PMMA, as the structural matrix. While barium titanate (BaTiO₃) nanopowder was added to the composites for its high room temperature dielectric constant, fiberglass was employed to confer high stiffness. A conductive polymer blend of poly (3,4-ethylenedioxythiophene) and polystyrene sulfonate (PEDOT:PSS) was used to coat the BaTiO₃ nanoparticles with the purpose of further elevating the dielectric constant of the resultant PMMA-composites. FTIR spectroscopy, TGA and SEM measurements were conducted to prove the successful coating of BaTiO₃ nanoparticles with the PEDOT:PSS blend. TEM measurements revealed a good dispersion of coated nanoparticles throughout the PMMA matrix. The fiberglass-reinforced-PMMA composites containing neat and coated BaTiO₃ were found to exhibit excellent stiffness. In addition, the use of PEDOT:PSS in conjunction with BaTiO₃ was observed to improve the dielectric constant of the composites. Finally, the dielectric constant of the structural composites was found to vary only slightly with temperature.

Original language	English
Pages (from-to)	2016-2024
Number of pages	9
Journal	Polymer
Volume	52
Issue number	9
DOIs	https://doi.org/10.1016/j.polymer.2011.02.050
State	Published - 19 Apr 2011

Bibliographical note

Funding Information:
This work is supported by NASA (Cooperative Agreement No.NNX09AP70A). The authors thank C. Stefanescu of LSU for help with the FTIR measurements. Special thanks are extended to Dr. Olesya Zhupanska for her support and thoughtful discussion and to Hongyu Cui for her help with the tensile testing experiments.

Keywords

Dielectric
Multifunctional
Polymer composite

Access to Document

10.1016/j.polymer.2011.02.050

Cite this

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title = "Multifunctional fiberglass-reinforced PMMA-BaTiO3 structural/dielectric composites",

abstract = "Fiberglass-reinforced polymer composites were investigated for potential use as structural dielectrics in multifunctional capacitors that require simultaneous excellent mechanical properties and good energy storage characteristics. Composites were fabricated employing poly(methyl methacrylate), PMMA, as the structural matrix. While barium titanate (BaTiO3) nanopowder was added to the composites for its high room temperature dielectric constant, fiberglass was employed to confer high stiffness. A conductive polymer blend of poly (3,4-ethylenedioxythiophene) and polystyrene sulfonate (PEDOT:PSS) was used to coat the BaTiO3 nanoparticles with the purpose of further elevating the dielectric constant of the resultant PMMA-composites. FTIR spectroscopy, TGA and SEM measurements were conducted to prove the successful coating of BaTiO3 nanoparticles with the PEDOT:PSS blend. TEM measurements revealed a good dispersion of coated nanoparticles throughout the PMMA matrix. The fiberglass-reinforced-PMMA composites containing neat and coated BaTiO3 were found to exhibit excellent stiffness. In addition, the use of PEDOT:PSS in conjunction with BaTiO3 was observed to improve the dielectric constant of the composites. Finally, the dielectric constant of the structural composites was found to vary only slightly with temperature.",

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note = "Funding Information: This work is supported by NASA (Cooperative Agreement No.NNX09AP70A). The authors thank C. Stefanescu of LSU for help with the FTIR measurements. Special thanks are extended to Dr. Olesya Zhupanska for her support and thoughtful discussion and to Hongyu Cui for her help with the tensile testing experiments. ",

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AU - Kessler, Michael R.

N1 - Funding Information: This work is supported by NASA (Cooperative Agreement No.NNX09AP70A). The authors thank C. Stefanescu of LSU for help with the FTIR measurements. Special thanks are extended to Dr. Olesya Zhupanska for her support and thoughtful discussion and to Hongyu Cui for her help with the tensile testing experiments.

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