| Summary: | 碩士 === 國立中興大學 === 化學工程學系所 === 99 === In this study, a series of benzoxazines synthesized by traditional approaches using four typical aromatic diamines－P-diamine, DDM, ODA, and BAPP. The process of the traditional approaches usually met generates a lot of gelation or not easy decomposed triazines. We successfully synthesized a serious of benzoxazines without gelatin and high yield. The structures were confirmed by 1H-NMR, and FTIR spectra.The benzoxazines with high-molecular weight exhibit high glass transition temperature, thermal stability, 5% decomposition temperature, and chair yield after thermal curing were measured by DSC,TGA,DMA,and TMA. There has the potential to the high-molecular weight benzoxazines tomorrow.
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