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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Thermal behaviour of TEGMMA copolymers obtained by photopolymerization using iron complexes

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Author(s):
I. C. Rigoli [1] ; C. C. Schmitt [2] ; L. A. Ramos [3] ; M. G. Neumann [4] ; E. T. G. Cavalheiro [5]
Total Authors: 5
Affiliation:
[1] Universidade de São Paulo. Instituto de Química de São Carlos - Brasil
[2] Universidade de São Paulo. Instituto de Química de São Carlos - Brasil
[3] Universidade de São Paulo. Instituto de Química de São Carlos - Brasil
[4] Universidade de São Paulo. Instituto de Química de São Carlos - Brasil
[5] Universidade de São Paulo. Instituto de Química de São Carlos - Brasil
Total Affiliations: 5
Document type: Journal article
Source: Eclética Química; v. 32, n. 3, p. 39-43, 2007-00-00.
Abstract

Copolymers of methyl methacrylate (MMA) and triethyleneglycol dimethacrylate (TEGDMA) obtained by photoinitiated polymerization using Fe(III) complexes were submitted to thermogravimetry (TGA) under dynamic air atmosphere and N2, and differential scanning calorimetric analysis (DSC). Thermal events were observed only between 90 - 110 ºC. Glass transitions were observed at ca. 100 ºC, followed by an exothermic peak at 170 ºC. The exothermic peak was assigned to a thermal curing process due to the presence of unreacted vinyl groups of the monomers. DSC revealed to be a useful tool to evaluate the curing completeness in this kind of material, using small amounts of sample in relatively short time. (AU)