TY - CONF
T1 - Conductive nanocomposites manufactured via frontal polymerization
AU - Dean, Leon M.
AU - Guo, Allen X.
AU - Aw, Jia En
AU - Yourdkhani, Mostafa
AU - Geubelle, Philippe H.
AU - Sottos, Nancy R.
N1 - Funding Information:
This research was conducted as part of the Center for Excellence for Self-Healing, Regeneration and Structural Remodeling, supported by the United States Air Force Office of Scientific Research through award FA9550-16-1-0017. We thank the Beckman Institute for Advanced Science and Technology and the Frederick Seitz Materials Research Lab at the University of Illinois for use of their facilities and equipment. L.M.D. thanks the National Science Foundation for a Graduate Research Fellowship.
Publisher Copyright:
© 2019 International Committee on Composite Materials. All rights reserved.
PY - 2019
Y1 - 2019
N2 - Frontal polymerization (FP) is a rapid, energy-efficient alternative to conventional manufacturing techniques for polymers and polymer composites. FP has been demonstrated for several polymerization reactions. One of the most promising is the frontal ring-opening metathesis polymerization (FROMP) of dicyclopentadiene (DCPD), which produces polydicyclopentadiene (pDCPD), a cross-linked thermoset polymer with excellent thermomechanical properties. Here we report for the first time the manufacturing of pDCPD matrix nanocomposites via FROMP. First, we describe nanocomposites containing low loadings of carbon nanofillers, below the percolation threshold. The ability of these nanofillers to efficiently convert light into heat enables non-contact photo-activation of FROMP. The efficiency of photo-activation increases by 40× with the addition of only 1 wt% carbon nanoparticles to the neat DCPD resin. Next, we describe nanocomposites containing higher loadings of carbon nanofillers, above the percolation threshold. These nanocomposites exhibit electrical conductivity more than 18 orders of magnitude greater than neat pDCPD. At loadings above the percolation threshold, the nanofillers also function as rheological modifiers which enable direct write 3D printing of the resin in tandem with FROMP.
AB - Frontal polymerization (FP) is a rapid, energy-efficient alternative to conventional manufacturing techniques for polymers and polymer composites. FP has been demonstrated for several polymerization reactions. One of the most promising is the frontal ring-opening metathesis polymerization (FROMP) of dicyclopentadiene (DCPD), which produces polydicyclopentadiene (pDCPD), a cross-linked thermoset polymer with excellent thermomechanical properties. Here we report for the first time the manufacturing of pDCPD matrix nanocomposites via FROMP. First, we describe nanocomposites containing low loadings of carbon nanofillers, below the percolation threshold. The ability of these nanofillers to efficiently convert light into heat enables non-contact photo-activation of FROMP. The efficiency of photo-activation increases by 40× with the addition of only 1 wt% carbon nanoparticles to the neat DCPD resin. Next, we describe nanocomposites containing higher loadings of carbon nanofillers, above the percolation threshold. These nanocomposites exhibit electrical conductivity more than 18 orders of magnitude greater than neat pDCPD. At loadings above the percolation threshold, the nanofillers also function as rheological modifiers which enable direct write 3D printing of the resin in tandem with FROMP.
KW - Carbon nanofilllers
KW - Frontal polymerization
KW - Nanocomposites
UR - http://www.scopus.com/inward/record.url?scp=85097333521&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85097333521&partnerID=8YFLogxK
M3 - Paper
AN - SCOPUS:85097333521
T2 - 22nd International Conference on Composite Materials, ICCM 2019
Y2 - 11 August 2019 through 16 August 2019
ER -