1, 2, 3‐Triazolium‐Based Epoxy–Amine Networks: Ion‐Conducting Polymer Electrolytes. Issue 14 (29th February 2016) - Ly Nguyen, Thi Khanh
Abstract : A diepoxy‐functionalized 1, 2, 3‐triazolium ionic liquid is synthesized in three steps and used in combination with a poly(propylene glycol) diamine to obtain ion‐conducting epoxy–amine networks (EANs). The curing kinetics are followed by Fourier transform infrared spectroscopy, while the physical, mechanical, and ion‐conducting properties of the resulting networks are studied by swelling experiments, differential scanning calorimetry, thermogravimetric analysis, dynamic mechanical thermal analysis, and broadband dielectric spectroscopy. The curing kinetics and thermomechanical properties of this system are relatively similar to those of conventional DGEBA‐ (bisphenol A diglycidyl ether)‐based EANs with low glass transition temperature ( T g = −44 and −52 °C, respectively) characteristic of rubbery polymer networks. The anhydrous ionic conductivity of the pure network at 30 °C reaches a remarkably high value of 2 × 10 −7 S cm −1 that could be further increased to 10 −6 S cm −1 by the addition of 10 wt% LiTFSI. Abstract : A diepoxy‐functionalized 1, 2, 3‐triazolium ionic liquid monomer is synthesized and reacted with a poly(propylene glycol) diamine hardener to obtain ionic epoxy‐amine networks. The anhydrous ionic conductivity of the pure network at 30 °C reaches 2 × 10 −7 S cm −1 and can be increased to 10 −6 S cm −1 by the addition of 10 wt% LiTFSI.