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Study of crosslinking acid copolymer/DGEBA systems by FTIR

机译:FTIR研究酸交联共聚物/ DGEBA体系

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A study of crosslinking of diglycidylether of bisphenol A (DGEBA) by four copolymers of poly(acrylic acid-co-styrene) having different acid group percentages, in the range 7.6-76.6%, was done by FTIR. The study was done in the isothermal mode for four different temperatures, the reaction being accelerated by triethylamine. We followed each by temperature and the variation of the area of the epoxy infrared band (912-916 cm(-1)) versus time. The results showed that the mechanism was complex and depended on the acid composition in the copolymer. Three types of reaction were involved: addition esterification, etherification, and condensation esterification. (C) 2003 Wiley Periodicals, Inc. [References: 16]
机译:通过FTIR对双酚A的二缩水甘油醚(DGEBA)通过具有不同酸基百分比(范围为7.6-76.6%)的聚(丙烯酸-共-苯乙烯)的四种共聚物进行交联的研究。该研究在四个不同温度的等温模式下进行,三乙胺可加速反应。我们分别跟踪温度和环氧红外波段(912-916 cm(-1))随时间的变化。结果表明,机理是复杂的,并且取决于共聚物中的酸组成。涉及三种类型的反应:加成酯化,醚化和缩合酯化。 (C)2003 Wiley Periodicals,Inc. [参考:16]

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