PMMA-matrix ternary composites for multifunctional capacitors

Eduard A. Stefanescu, J. Eliseo De León, Xiaoli Tan, Zhiqun Lin, Nicola Bowler, Michael R. Kessler

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In this manuscript, we describe the influence of -COOH functionalized carbon nanotubes, CNTs, on the thermo-mechanical and dielectric behaviors of PMMA composites containing montmorillonite, MMT. The composites were prepared through a thermally activated, in-situ, radical polymerization utilizing benzoyl peroxide as initiator. MMT was used in fabrication of the composite for its ability to generate viscous monomer slurries, which played a critical role in dispersing and suspending the CNTs. Although the addition of MMT and CNTs was found to improve thermal stability of PMMA, the glass transition temperature of the polymer was significantly reduced by these two fillers. Additionally, the composites containing CNTs exhibited significantly increased Young's modulus values relative to the PMMA-MMT composites, after initial stretching to align the CNTs in the direction of the applied stress. However, the gradual addition of CNTs to the polymeric systems resulted in increased dielectric constants, suggesting that these systems are possible candidates for the dielectrics in structural capacitors.

Original languageEnglish
Title of host publication2010 SAMPE Fall Technical Conference and Exhibition
StatePublished - 2010
Event2010 SAMPE Fall Technical Conference and Exhibition - Salt Lake City, UT, United States
Duration: 11 Oct 201014 Oct 2010

Publication series

NameInternational SAMPE Technical Conference


Conference2010 SAMPE Fall Technical Conference and Exhibition
Country/TerritoryUnited States
CitySalt Lake City, UT


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