Polymerization of linear aliphatic diamine-based benzoxazine resins under inert and oxidative environments
Polymerization of linear aliphatic diamine-based benzoxazine resins under inert and oxidative environments
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DOI：
10.1016/j.polymer.2007.09.003
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发表时间：
2007-11-02
期刊：
影响因子：
4.6
通讯作者：
Ishida, Hatsuo
中科院分区：
文献类型：
--
作者：
Allen, Douglas J.;Ishida, Hatsuo
研究了一系列线性脂肪族二胺类苯并恶嗪单体。反应时间和纯化程序已被优化为每个单独的二胺。这些基于二胺的苯并恶嗪单体的结构已通过H-1和C-13 NMR和红外光谱表征。通过傅里叶变换红外光谱法研究了聚合速率与脂肪胺链长的关系。研究了由这些单体合成的聚苯并恶嗪的玻璃化转变温度（Tg）。短链胺聚苯并恶嗪表现出约170 ℃的Tg。在空气和惰性气氛下研究了聚合环境对这些线性脂肪族二胺基苯并恶嗪系列单体的影响。差示扫描量热法用于确定这些苯并恶嗪的熔点和峰值聚合温度。还报道了乙二胺基聚苯并恶嗪的反常聚合行为。(c)2007爱思唯尔有限公司保留所有权利。
A series of linear aliphatic diamine-based benzoxazine monomers have been studied. Reaction times and purification procedures have been optimized for each individual diamine. The structure of these diamine-based benzoxazine monomers has been characterized by H-1 and C-13 NMR, and infrared spectroscopy. The rate of polymerization has been studied by Fourier transform infrared spectroscopy as a function of the chain length of the aliphatic amines. The glass transition temperatures (T-g) of the polybenzoxazines from these monomers are also studied. The short chain amine polybenzoxazine exhibits the T-g of around 170 degrees C. The influence of the polymerization environment for these linear aliphatic diamine-based series of benzoxazine monomers has been studied under air and inert atmosphere. Differential scanning calorimetry is used to determine the melting points of these benzoxazines and the temperature of the peak polymerization exotherm. An anomalous polymerization behavior of ethylene diamine-based polybenzoxazine is also reported. (c) 2007 Elsevier Ltd. All rights reserved.