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Mechanics of Composite, Hybrid and Multifunctional Materials, Volume 5 pp 1–8Cite as

Stimulus-Responsive Interfacial Chemistry in CNT/Polymer Nanocomposites

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Abstract

The enhancement of interfacial interactions in carbon nanotube (CNT)/polydimethylsiloxane (PDMS) polymer matrix composites was investigated. The approach taken was to functionalize the CNTs with the photoreactive molecule benzophenone in order to anchor the CNTs to the polymer chains on demand. The anchoring reaction was activated by the use of externally applied UV irradiation. A comparison was done on randomly dispersed and aligned CNTs in order to observe the effect of orientation on interface mechanics and overall enhancement. The effect of interfacial interaction on the mechanical response was determined through analysis of static mechanical experiments, as an increase in interfacial interaction resulted in an observable change in elastic modulus and yield stress. An increase of 22% in elastic modulus was observed in randomly oriented CNTs while an increase of 93% was observed in aligned CNT composites after exposure to UV light. In addition, alignment of CNTs lead to a more discreet yield stress which allowed for a clearer identification of the onset of interfacial failure. This work provides insight into the intelligent design of composites, starting at the nanoscale, to provide desired on-demand macroscale response.

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Acknowledgement

F. Gardea and Z. Huang contributed equally to this work. This work is partially supported by the Army Research Office under Cooperative Agreement No. W911NF1420024 and the Air Force Office of Scientific Research through Grant No. FA9550-16-1-0150.

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Authors and Affiliations

  1. Vehicle Technology Directorate, U.S. Army Research Laboratory, Aberdeen Proving Ground, Aberdeen, MD, USA

    Frank Gardea & Bryan Glaz

  2. Department of Chemistry, University of Maryland, College Park, MD, USA

    Zhongjie Huang, Xiyuan Cheng, Zhiwei Peng & YuHuang Wang

  3. Weapons and Materials Research Directorate, U.S. Army Research Laboratory, Aberdeen Proving Ground, Aberdeen, MD, USA

    Shashi P. Karna

Authors
  1. Frank Gardea
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  2. Zhongjie Huang
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  3. Bryan Glaz
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  4. Shashi P. Karna
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  5. Xiyuan Cheng
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  6. Zhiwei Peng
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  7. YuHuang Wang
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Correspondence to Frank Gardea .

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Editors and Affiliations

  1. HHB Bldg. 3B161, Dow Chemical Company, Lake Jackson, TX, USA

    Piyush R. Thakre

  2. College of Engineering, Architecture & Technology, Oklahoma State University, Stillwater, OK, USA

    Raman P. Singh

  3. United States Army Research Laboratory, Adelphi, MD, USA

    Geoffrey Slipher

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© 2019 The Society for Experimental Mechanics, Inc.

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Gardea, F. et al. (2019). Stimulus-Responsive Interfacial Chemistry in CNT/Polymer Nanocomposites. In: Thakre, P., Singh, R., Slipher, G. (eds) Mechanics of Composite, Hybrid and Multifunctional Materials, Volume 5. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-95510-0_1

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  • DOI: https://doi.org/10.1007/978-3-319-95510-0_1

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-95509-4

  • Online ISBN: 978-3-319-95510-0

  • eBook Packages: EngineeringEngineering (R0)

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