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首页> 外文期刊>Journal of Applied Polymer Science >DETERMINATION OF REACTION ACTIVATION ENERGY DURING GELATION IN FREE RADICAL CROSSLINKING, COPOLYMERIZATION USING THE STEADY-STATE FLUORESCENCE METHOD
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DETERMINATION OF REACTION ACTIVATION ENERGY DURING GELATION IN FREE RADICAL CROSSLINKING, COPOLYMERIZATION USING THE STEADY-STATE FLUORESCENCE METHOD

机译：稳态荧光法测定自由基交联，共聚合中凝胶化过程中的反应活化能

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摘要

The steady-state fluorescence technique was used to study the sol-gel transition in free radical crosslinking copolymerization of methyl methacrylate and ethylene glycol dimethacrylate (EGDM). Pyrene methyl pivalate was used as a fluorescence probe for the in situ polymerization experiments. The times required for the onset of gelation t(c) and the critical exponent beta were recorded for various EGDM contents and at different polymerization temperatures. A simple kinetic model was used to interpret the experimental gel point data. The results show that the fluorescence technique can be used to measure the critical exponent beta, the gel point t(c), and the activation energy during sol-gel phase transition processes. (C) 1996 John Wiley & Sons, Inc. [References: 23]
机译：稳态荧光技术用于研究甲基丙烯酸甲酯和乙二醇二甲基丙烯酸酯（EGDM）自由基交联共聚中的溶胶-凝胶转变。 ival新戊酸甲酯用作原位聚合实验的荧光探针。记录了各种EGDM含量和在不同聚合温度下开始发生凝胶化t（c）和临界指数β所需的时间。一个简单的动力学模型被用来解释实验的凝胶点数据。结果表明，荧光技术可用于测量临界指数β，凝胶点t（c）和溶胶-凝胶相变过程中的活化能。 （C）1996 John Wiley＆Sons，Inc. [参考：23]

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