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- Title
Master curve and time-temperature-transformation cure diagram of a polyfunctional epoxy acrylic resin.
- Authors
Cañamero-Martínez, Pedro; De la Fuente, José Luis; Fernández-García, Marta
- Abstract
The curing reaction of a well-defined glycidyl methacrylate- co-butyl acrylate statistical copolymer, prepared by atom transfer radical polymerization, and a commercial linear diamine (Jeffamine D-230) was studied with the objectives of constructing and discussing a time-temperature-transformation isothermal curing for this system. Thermal and rheological analyses were used to obtain the gelation and vitrification times. Differential scanning calorimetry data showed a one-to-one relationship between the glass-transition temperature ( T) and fractional conversion independent of the cure temperature. As a result, T was used as a measurement of conversion. We obtained a kinetically controlled master curve for isothermal curing temperatures from 50 to 100°C by shifting T versus the natural logarithm time data to a reference temperature of 80°C. We calculated the apparent activation energy by applying two different methods, gel time measurements versus shift factors, suggesting a good agreement between them. Isoconversion contours were calculated by the numerical integration of the kinetic model. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
- Subjects
EPOXY resins; ACRYLIC resins; ATOMS; POLYMERIZATION research; GLASS transition temperature
- Publication
Journal of Applied Polymer Science, 2011, Vol 120, Issue 4, p2166
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.33127