TY - JOUR
T1 - Manipulating Frontal Polymerization and Instabilities with Phase-Changing Microparticles
AU - Gao, Yuan
AU - Dearborn, Mason A.
AU - Vyas, Sagar
AU - Kumar, Aditya
AU - Hemmer, Julie
AU - Wang, Zhao
AU - Wu, Qiong
AU - Alshangiti, Omar
AU - Moore, Jeffrey S.
AU - Esser-Kahn, Aaron P.
AU - Geubelle, Philippe H.
N1 - Funding Information:
This work was supported by the U.S. Air Force Office of Scientific Research through Award FA9550-16-1-0017 (Dr. B.“Les” Lee, Program Manager) as part of the Center for Excellence in Self-Healing, Regeneration, and Structural Remodeling. The authors also acknowledge the support of the National Science Foundation for Grant no. 1830635 through the LEAP HI: Manufacturing USA Program.
Funding Information:
This work was supported by the U.S. Air Force Office of Scientific Research through Award FA9550-20-1-0194 as part of the Center of Excellence in Self-healing and Morphogenic Manufacturing. The authors also acknowledge the support of the National Science Foundation for Grant No. 1933932 through the GOALI: Manufacturing USA: Energy Efficient Processing of Thermosetting Polymers and Composites.
Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/7/15
Y1 - 2021/7/15
N2 - Recently presented as a rapid and eco-friendly manufacturing method for thermoset polymers and composites, frontal polymerization (FP) experiences thermo-chemical instabilities under certain conditions, leading to visible patterns and spatially dependent material properties. Through numerical analyses and experiments, we demonstrate how the front velocity, temperature, and instability in the frontal polymerization of cyclooctadiene are affected by the presence of poly(caprolactone) microparticles homogeneously mixed with the resin. The phase transformation associated with the melting of the microparticles absorbs some of the exothermic reaction energy generated by the FP, reduces the amplitude and order of the thermal instabilities, and suppresses the front velocity and temperatures. Experimental measurements validate predictions of the dependence of the front velocity and temperature on the microparticle volume fraction provided by the proposed homogenized reaction-diffusion model.
AB - Recently presented as a rapid and eco-friendly manufacturing method for thermoset polymers and composites, frontal polymerization (FP) experiences thermo-chemical instabilities under certain conditions, leading to visible patterns and spatially dependent material properties. Through numerical analyses and experiments, we demonstrate how the front velocity, temperature, and instability in the frontal polymerization of cyclooctadiene are affected by the presence of poly(caprolactone) microparticles homogeneously mixed with the resin. The phase transformation associated with the melting of the microparticles absorbs some of the exothermic reaction energy generated by the FP, reduces the amplitude and order of the thermal instabilities, and suppresses the front velocity and temperatures. Experimental measurements validate predictions of the dependence of the front velocity and temperature on the microparticle volume fraction provided by the proposed homogenized reaction-diffusion model.
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U2 - 10.1021/acs.jpcb.1c03899
DO - 10.1021/acs.jpcb.1c03899
M3 - Article
C2 - 34228929
AN - SCOPUS:85110936150
SN - 1520-6106
VL - 125
SP - 7537
EP - 7545
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
IS - 27
ER -