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Investigation of the Effect of Variation of Cross- Linking Agents and two Heating Rates on Glass Transition of a Denture Base Acrylic Resin

Vjekoslav Jerolimov ; School of Dental Medicine, University of Zagreb, Zagreb, Croatia
Robert G. Jagger ; Department of Restorative Dentistry School of Dentistry, University of Wales College of Medicine, Cardiff, Wales, Velika Britanija
Paul J. Millward ; Department of Restorative Dentistry School of Dentistry, University of Wales College of Medicine, Cardiff, Wales, Velika Britanija
Vlado Carek ; School of Dental Medicine, University of Zagreb, Zagreb, Croatia

Puni tekst: hrvatski, pdf (8 MB) str. 19-24 preuzimanja: 219* citiraj
APA 6th Edition
Jerolimov, V., Jagger, R.G., Millward, P.J. i Carek, V. (1997). Učinak rasta količine umreživača i stope zagrijavanja na promjenu temperature staklastog prijelaza akrilata. Acta stomatologica Croatica, 31 (1), 19-24. Preuzeto s https://hrcak.srce.hr/99348
MLA 8th Edition
Jerolimov, Vjekoslav, et al. "Učinak rasta količine umreživača i stope zagrijavanja na promjenu temperature staklastog prijelaza akrilata." Acta stomatologica Croatica, vol. 31, br. 1, 1997, str. 19-24. https://hrcak.srce.hr/99348. Citirano 19.04.2021.
Chicago 17th Edition
Jerolimov, Vjekoslav, Robert G. Jagger, Paul J. Millward i Vlado Carek. "Učinak rasta količine umreživača i stope zagrijavanja na promjenu temperature staklastog prijelaza akrilata." Acta stomatologica Croatica 31, br. 1 (1997): 19-24. https://hrcak.srce.hr/99348
Harvard
Jerolimov, V., et al. (1997). 'Učinak rasta količine umreživača i stope zagrijavanja na promjenu temperature staklastog prijelaza akrilata', Acta stomatologica Croatica, 31(1), str. 19-24. Preuzeto s: https://hrcak.srce.hr/99348 (Datum pristupa: 19.04.2021.)
Vancouver
Jerolimov V, Jagger RG, Millward PJ, Carek V. Učinak rasta količine umreživača i stope zagrijavanja na promjenu temperature staklastog prijelaza akrilata. Acta stomatologica Croatica [Internet]. 1997 [pristupljeno 19.04.2021.];31(1):19-24. Dostupno na: https://hrcak.srce.hr/99348
IEEE
V. Jerolimov, R.G. Jagger, P.J. Millward i V. Carek, "Učinak rasta količine umreživača i stope zagrijavanja na promjenu temperature staklastog prijelaza akrilata", Acta stomatologica Croatica, vol.31, br. 1, str. 19-24, 1997. [Online]. Dostupno na: https://hrcak.srce.hr/99348. [Citirano: 19.04.2021.]

Sažetak
The purpose of the study was to investigate the effect of two different
heating rates used in order to evaluate the transition glass temperature of dough-moulded poly (methylmethacrylate) denture base materials. Cross-linking agents ethylene glicol dimethacrylate (EGDMA), tetra (ethylene glycol dimetacry late) (TEGDMA) and poly (ethylene glycol dimethacrylate) (PEG 600 DMA) were added to the MM A monomer component in concentrations o f 0 - 30% according to the volume o f monomer liquid concentration. The polymer component was an unpigmented PMMA homopolymer. The comparison group of specimens was made by using the monomer liquid without a cross-linking agent. Specimens were produced in moulds according to conventional dental- flasking and curing procedures. Measurements o f Tg were determined by thermomechanical analysis using a Stanton Redcroft TMA, Model 790 (PL Thermal Sciences Ltd., Epsom, UK) Heating rates o f 5 °C/min and 10 °C/min were selected for this investigation. It was concluded that Tg values were highly dependent o f the heating rates used in thermomechanical analysis, being very significantly increased with the increase in heating rate. It was also concluded that the addition of a cross-linking agent would affect Tg o f denture base resins.

Ključne riječi
poly(methyl methacrylate); glass transition; heating rate; cross-linking

Hrčak ID: 99348

URI
https://hrcak.srce.hr/99348

[hrvatski]

Posjeta: 384 *