2008•Polymers for Advanced TechnologiesRequires access

Synthesis and characteristic of polybenzoxazine with phenylnitrile functional group

Huimin Qi, Hao Ren, Guangyan Pan, Yuanqi Zhuang, Farong Huang, Lei Du

Abstract

Abstract The phenylnitrile functional benzoxazine monomers, 3‐phenyl‐3,4‐dihydro‐ 6‐nitril‐2H‐1,3‐benzoxazine (NBen‐a) and 4,4′‐bis(3,4‐dihydro‐6‐nitril‐2H‐1,3‐benzoxazine‐3‐yl)phenylether (NBen‐De), were synthesized and characterized by Fourier transform infrared (FTIR) spectroscopy and proton nuclear magnetic resonance (1H‐NMR). The curing behaviors of NBen‐a and NBen‐De were characterized by differential scanning calorimetry (DSC) and FTIR. Thermal stability and dynamic mechanical properties of the cured NBen‐a and NBen‐De were investigated using thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA). The cured NBen‐a and NBen‐De showed glass transition temperature (Tg), the thermal stability improved as compared to the analogous polybenzoxazine without phenylnitrile group. Copyright © 2008 John Wiley & Sons, Ltd.

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Key concepts: Thermogravimetric analysis, Differential scanning calorimetry, Fourier transform infrared spectroscopy, Thermal stability, Materials science, Glass transition, Curing (chemistry), Polymer chemistry