Thermal and spectral behaviour of a light-cured methacrylate-based composite material used in dentistry

The evolution of the polymerization of a light-cured methacrylate-based composite material (Pekalite) used in dentistry was studied. Fourier transform infrared spectroscopy and thermal analysis (TA) showed that with increasing the photo-polymerization time from 5 to 60 s, the degree of conversion in...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2013-12, Vol.114 (3), p.1325-1331
Main Authors: Manolea, H. O., Rotaru, P., Manolea, G., Morîntale, E., Rîcă, R.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Application fields
Applied sciences
Chemistry
Chemistry and Materials Science
Composite materials
Composite materials industry
Composites
Dentistry
Evolution
Exact sciences and technology
Forms of application and semi-finished materials
Fourier transforms
Infrared spectroscopy
Inorganic Chemistry
Measurement Science and Instrumentation
Methyl methacrylate
Physical Chemistry
Polymer industry, paints, wood
Polymer matrix composites
Polymer Sciences
Polymerization
Spectra
Tantalum
Technology of polymers
Thermal analysis
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Summary:The evolution of the polymerization of a light-cured methacrylate-based composite material (Pekalite) used in dentistry was studied. Fourier transform infrared spectroscopy and thermal analysis (TA) showed that with increasing the photo-polymerization time from 5 to 60 s, the degree of conversion increases from 32.5 to 59.6 % and thermal stability of the composite material increases from 144.6 to 270 °C. Growth of photo-polymerization time from 5 to 60 s produces an improvement in the mechanical strength of the composite material from 153 to 248 MPa. Spectral analysis and TA are two complementary and rapid methods for determining the degree of polymerization of composite materials used in dentistry.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-013-3170-8