Scalable manufacturing of thermoset nanocomposites consisting of ferrimagnetic nanoparticles using static magnetic fields

Mychal P. Spencer, David Gao, Namiko Yamamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Assembled morphologies of nanoparticles with controllable interfaces are critical to provide tailorable polymer nanocomposites (PNCs) with unique properties. The active assembly of nanoparticles using an external magnetic field is a potential solution to the bulk fabrication of PNCs due to the low power requirements, ease of use, high periodicity, and patterning capability. However, additional information is needed to produce controllable, and homogeneous nanoparticle assemblies within a polymer matrix. This work is a continuation of experimental and theoretical work about the assembly of iron oxide nanoparticles in static and oscillating magnetic fields.28,30 Previous work included evaluation of critical manufacturing parameters and their ranges on the assembly of iron oxide nanoparticles in a low viscosity matrix. Based on this previous work, magnetic assembly in a high viscosity matrix (polymer) was studied. Our results demonstrate that effective assembly of iron oxide nanoparticles (~25 nm γ-Fe2O3, 0.1% volume fraction) can be accomplished in highly viscous matrices at very low magnetic flux densities (50 G DC). In addition, a magnetic field gradient across the sample domain of over 5% has been shown to produce significant translation of the nanoparticles towards the pole locations, limiting control of the particle assemblies. The usage of a silane coupling agent (GPS) has also been shown to be effective in controlling settling of the nanoparticles, leading to dispersed and homogenous nanoparticle assemblies. Lastly, while a higher nanoparticle concentration (1.0% volume fraction) produced additional settling, nanoparticle assemblies were found to be uniformly distributed throughout the polymer matrix similar to that found for the silane coupling agent modified nanoparticles. The understanding of how to produce homogeneous and uniform nanoparticle assemblies within a high viscosity matrix is important prior to demonstrating the effective tailorability of nanoparticle assemblies in PNCs, and their influence on transport properties. In the near-future, fabrication of homogeneous PNCs with variable transport properties will be demonstrated.

Original languageEnglish (US)
Title of host publicationAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Edition210049
ISBN (Print)9781624105326
DOIs
StatePublished - Jan 1 2018
EventAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018 - Kissimmee, United States
Duration: Jan 8 2018Jan 12 2018

Publication series

NameAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018
Number210049

Other

OtherAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018
CountryUnited States
CityKissimmee
Period1/8/181/12/18

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Architecture

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  • Cite this

    Spencer, M. P., Gao, D., & Yamamoto, N. (2018). Scalable manufacturing of thermoset nanocomposites consisting of ferrimagnetic nanoparticles using static magnetic fields. In AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials (210049 ed.). (AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018; No. 210049). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2018-1156