Kinetic studies of the polymerization of an epoxy resin modified with rhodamine B

被引：28
作者：
Fernandez, Raquel [1 ]
Fernandez d'Arlas, Borja [1 ]
Oyanguren, Patricia A. [2 ]
Mondragon, Inaki [1 ]
机构：
[1] Univ Pais Vasco Euskal Herriko Unibertsitatea, Polytech Sch, Dept Chem & Environm Engn, Mat & Technol Grp, Donostia San Sebastian 20018, Spain
[2] INTEMA Univ Nac Mar del Plata CONICET, RA-4302 Mar Del Plata, Buenos Aires, Argentina
来源：
THERMOCHIMICA ACTA | 2009年 / 493卷 / 1-2期
关键词：
Epoxy; Rhodamine B; Kinetics; Fluorescent properties; CURE KINETICS; AMINE CURE; PHOTOPHYSICAL PROPERTIES; ISOCONVERSIONAL ANALYSIS; FLUORESCENT CHEMOSENSOR; MOLECULAR-FORMS; IN-SITU; MECHANISMS; DSC; MODEL;
D O I：
10.1016/j.tca.2009.03.015
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Novel fluorescent materials were satisfactorily synthesized. With this aim, an epoxy resin based on diglycidyl ether of bisphenol A (DGEBA) was reacted with a laser dye, rhodamine B (RB), to achieve an epoxy-based prepolymer. Then, a diamine, m-xylylenediamine (MXDA), was used as hardener with the purpose of obtaining a crosslinked polymer. The curing conditions strongly influence the intended final properties and the optimization of the curing requires a reliable kinetic model. For that reason, this work presents the kinetic study of the polymerization of the epoxy resin by differential scanning calorimetry (DSC) in isothermal mode as well as by Fourier transform infrared spectroscopy (FTIR). DSC data were fitted using a Kamal autocatalytic equation. Conversion as a function of reaction time curves obtained by means of both techniques agreed well. In addition, the synthesized epoxy-based materials were characterized by proton nuclear magnetic resonance spectroscopy (H-1 NMR) and their fluorescent properties were also analysed. (C) 2009 Elsevier B.V. All rights reserved.
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页码：6 / 13
页数：8
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