Electrical impedance spectroscopy of epoxy systems: The case of 1,4-butanediol diglycidyl ether/ cis-1,2-cyclohexanedicarboxylic anhydride and triethylamine as initiator

• Published in: European polymer journal Vol. 42; no. 1; pp. 195 - 202
• Main Authors: Nucci, Ana M., Nicolau, Aline, Martini, Emilse M.A., Samios, Dimitrios
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 2006; Elsevier
• Subjects: Applied sciences; Chemical properties; Electrical impedance spectroscopy; Epoxy systems; Exact sciences and technology; Molar fraction variation; Polymer industry, paints, wood; Properties and testing; Technology of polymers; Electrical impedance spectroscopy; Molar fraction variation; Epoxy systems; Investigation method; Curing(plastics); Gelation; Tertiary amine; Epoxy resin; Organic anhydride; Electric impedance measurement; Experimental study
• ISSN: 0014-3057; 1873-1945
• DOI: 10.1016/j.eurpolymj.2005.05.016

A series of epoxy cured samples, with different molar composition of 1,4-butanediol diglycidyl ether (EP), cis-1,2-cyclohexanedicarboxylic anhydride (CH) and triethylamine (TEA) as initiator, was studied by Electrical Impedance Spectroscopy (EIS) in the frequency range 10 −2–10 5 Hz. The resistivity of the system was evaluated by using the complex impedance analysis method. Resistivity values in the range between 10 7 and 10 13 Ω cm were obtained and related to the composition (molar fraction x EP or x CH) of the epoxy system. The gel formation characteristics of the samples were obtained as theoretically described by Flory.