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dc.contributor.authorWang, Zepu
dc.contributor.authorNelson, J. Keith
dc.contributor.authorMiao, Jianjun
dc.contributor.authorLinhardt, Robert J.
dc.contributor.authorSchadler, Linda S.
dc.contributor.authorHillborg, Henrik
dc.contributor.authorZhao, Su
dc.date2012
dc.date.accessioned2022-06-27T16:06:31Z
dc.date.available2022-06-27T16:06:31Z
dc.date.issued2012-06-01
dc.identifier.citationEffect of high aspect ratio filler on dielectric properties of polymer composites: A study on barium titanate fibers and graphene platelets, Z. Wang, J. K. Nelson, J. Miao, R.J. Linhardt, L. S. Schadler, H. Hillborg, S. Zhao, IEEE Transactions on Dielectrics and Electrical Insulation, 19, 960-967, 2012.
dc.identifier.issn10709878
dc.identifier.urihttps://doi.org/10.1109/TDEI.2012.6215100
dc.identifier.urihttps://hdl.handle.net/20.500.13015/5711
dc.descriptionIEEE Transactions on Dielectrics and Electrical Insulation, 19, 960-967
dc.descriptionNote : if this item contains full text it may be a preprint, author manuscript, or a Gold OA copy that permits redistribution with a license such as CC BY. The final version is available through the publisher’s platform.
dc.description.abstractHigh aspect ratio fillers are predicted to increase the dielectric constant of polymer composites more efficiently than spherical fillers according to the rule of mixtures. Using high aspect ratio fillers is a promising route for creating high dielectric constant, low loss materials at a low filler volume fraction, for use as capacitor and electric field grading materials. In this work, two high aspect ratio fillers were mixed into a polymer matrix, and the dielectric properties of composites were studied. Barium titanate fibers were synthesized by electrospinning a sol-gel, followed by a heat treatment to obtain a perovskite crystal structure. The heat treatment conditions were found to be crucial for obtaining tetragonal barium titanate fibers with high dielectric constant. Graphene platelets were prepared by a thermal shock method, which was found to result in a larger dielectric constant. A combination of barium titanate and graphene platelets yielded the highest dielectric constant when used in a polydimethyl siloxane matrix. The increase in dielectric loss over the pure matrix was small when the volume fraction was below the percolation threshold of graphene platelets. Electric flux density-electric field (D-E) measurements showed a linear dielectric constant in barium titanate filled composites and higher loss when graphene was added. The ac breakdown strength was reduced compared to the neat polymer and was affected by filler aspect ratio. The mechanisms that lead to the observed phenomena are discussed.
dc.description.sponsorshipNational Science Foundation
dc.description.urihttps://login.libproxy.rpi.edu/login?url=https://doi.org/10.1109/TDEI.2012.6215100
dc.languageen_US
dc.language.isoENG
dc.relation.ispartofThe Linhardt Research Labs Online Collection
dc.relation.ispartofRensselaer Polytechnic Institute, Troy, NY
dc.relation.ispartofIEEE Transactions on Dielectrics and Electrical Insulation
dc.relation.urihttps://harc.rpi.edu/
dc.subjectBiology
dc.subjectChemistry and chemical biology
dc.subjectChemical and biological engineering
dc.subjectBiomedical engineering
dc.titleEffect of high aspect ratio filler on dielectric properties of polymer composites: A study on barium titanate fibers and graphene platelets
dc.typeArticle
dcterms.accessRightshttps://login.libproxy.rpi.edu/login?url=https://doi.org/10.1109/TDEI.2012.6215100
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dcterms.isVersionOfhttps://doi.org/10.1109/TDEI.2012.6215100
dc.rights.holderIn Copyright : this Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). https://rightsstatements.org/page/InC/1.0/
dc.creator.identifierhttps://orcid.org/0000-0003-2219-5833
dc.relation.departmentThe Linhardt Research Labs.
dc.relation.departmentThe Shirley Ann Jackson, Ph.D. Center for Biotechnology and Interdisciplinary Studies (CBIS)
rpi.description.pages960-967
rpi.description.volume19


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