Title: INFLUENCE OF ARYL ETHER SUBSTITUTION ON POLYMERIZATION AND THERMAL DEGRADATION OF DIAMINE BASED POLYBENZOXAZINES
Authors: Charles M. Davis, Jeffrey S. Wiggins
Abstract: Polybenzoxazines have shown great promise as composite matrices for high temperature and extreme environment applications. Specifically, aromatic diamine based benzoxazines are known to have high glass transition temperatures (Tg), high thermal stability and a highly modular synthesis. This research aimed to determine the influence of aryl ether bridge content and substitution on polymerization and thermal degradation in diamine based benzoxazines. Commercially available diamines with varying aryl ether bridge content and conformation were used to synthesize one novel and several previously reported benzoxazine monomers using a one pot method. The chemical structure and purity of monomers was confirmed via proton nuclear magnetic resonance spectroscopy. Differences in their polymerization and Tgs were determined through differential scanning calorimetry (DSC). Thermal gravimetric analysis (TGA) was used to measure thermal stability and char yield. The results showed that aryl ether diamine based benzoxazines have great promise as matrix systems for high temperature and high char applications.
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Conference: SAMPE 2023
Publication Date: 2023/04/17
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