TY - JOUR
T1 - Investigation of interpenetrating polymer networks for self-healing applications
AU - Peterson, Amy M.
AU - Kotthapalli, Harsha
AU - Rahmathullah, M. Aflal M.
AU - Palmese, Giuseppe R.
N1 - Funding Information:
The authors acknowledge the US Army Research Laboratory for financial support under the Army Materials Center of Excellence Program, contract W911NF-06-2-0013. Amy M. Peterson is supported in part by a National Science Foundation Graduate Research Fellowship.
PY - 2012/1/18
Y1 - 2012/1/18
N2 - Self-healing techniques can enhance the durability and reliability of thermosetting polymer systems. This research discusses thermally induced healing of Interpenetrating Polymer Networks (IPNs) with varying percentages of linear polymer. An in situ sequential IPN system was developed using diglycidyl ether of bisphenol A (DGEBA) cured with 4,4'-methylene biscyclohexanamine as the cross-linked phase and poly(methacrylated phenyl glycidyl ether) (pMPGE) as the linear polymer phase. It was hypothesized that upon healing, diffusion of linear polymer to the crack interface could aid in crack healing. The polymer network without linear polymer had a healing efficiency of 52% after the first healing cycle, dropping to 25% after the fourth healing cycle. IPNs with varying amounts of pMPGE had healing efficiencies ranging from 40% to 52% after the first healing cycle. Healing efficiencies dropped to 27-39% after the fourth healing cycle. The incorporation of linear polymer allowed for greater retention of healing efficiency over consecutive healing cycles.
AB - Self-healing techniques can enhance the durability and reliability of thermosetting polymer systems. This research discusses thermally induced healing of Interpenetrating Polymer Networks (IPNs) with varying percentages of linear polymer. An in situ sequential IPN system was developed using diglycidyl ether of bisphenol A (DGEBA) cured with 4,4'-methylene biscyclohexanamine as the cross-linked phase and poly(methacrylated phenyl glycidyl ether) (pMPGE) as the linear polymer phase. It was hypothesized that upon healing, diffusion of linear polymer to the crack interface could aid in crack healing. The polymer network without linear polymer had a healing efficiency of 52% after the first healing cycle, dropping to 25% after the fourth healing cycle. IPNs with varying amounts of pMPGE had healing efficiencies ranging from 40% to 52% after the first healing cycle. Healing efficiencies dropped to 27-39% after the fourth healing cycle. The incorporation of linear polymer allowed for greater retention of healing efficiency over consecutive healing cycles.
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U2 - 10.1016/j.compscitech.2011.11.022
DO - 10.1016/j.compscitech.2011.11.022
M3 - Article
AN - SCOPUS:84855834113
SN - 0266-3538
VL - 72
SP - 330
EP - 336
JO - Composites Science and Technology
JF - Composites Science and Technology
IS - 2
ER -