Influence of chain extender length of aromatic dimethacrylates on polymer network development

被引：49

作者：

Ogliari, Fabricio A. ^{[1
]}

Ely, Caroline ^{[2
]}

Zanchi, Cesar H. ^{[1
]}

Fortes, Carmen B. B. ^{[2
]}

Samuel, Susana M. W. ^{[2
]}

Fernando Demarco, Flavio ^{[1
]}

Petzhold, Cesar L. ^{[3
]}

Piva, Evandro ^{[1
]}

机构：

[1] Univ Fed Pelotas, Sch Dent, Dept Operat Dent, BR-96015560 Pelotas, RS, Brazil

[2] Univ Fed Rio Grande do Sul, Sch Dent, Dent Mat Lab, BR-90046900 Porto Alegre, RS, Brazil

[3] Univ Fed Rio Grande do Sul, Dept Organ Chem, Inst Chem, BR-90046900 Porto Alegre, RS, Brazil

来源：

DENTAL MATERIALS | 2008年 / 24卷 / 02期

关键词：

degree of conversion; water sorption; solubility; dimethacrylates; Bis-GMA; Bis-EMA;

D O I：

10.1016/j.dental.2007.03.007

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

objective. To investigate the role of chain extender size from Bis-EMA monomers on the polymerization profiles and properties of the crosslinked polymers. Additionally, the influence of Bis-GMA was also evaluated. Methods. The polymer network from homopolymers Bis-EMA4, Bis-EMA10 and Bis-EMA30 was characterized, as well as copolymers formed among these monomers and Bis-GMA. The degree of conversion from neat and blended monomers as a function of photo-activation time was evaluated by FTIR. Rate of polymerization, network parameter and cross-link density from materials were demonstrated. Water sorption and solubility were determined according to ISO 4049 specification and the data obtained were analyzed by two-way ANOVA/Tukey's test (alpha= 0.05). Flexural strength and Young's modulus from polymerized monomers/co-monomers were measured after 24h water storage at 37 degrees C and the results were analyzed by one-way ANOVA/Tukey's test (alpha = 0.05). Results. Monomers with larger ethylene oxide units presented the highest values regarding the degree of conversion and cross-link density. The effect of the chain extender length was also observed in water sorption and solubility polymer characteristics, with Bis-EMA4 being the most hydrophobic polymer. Bis-EMA10 and Bis-EMA30 homopolymers were not able to be tested with the three point bending test due to their great flexibility. The addition of Bis-GMA produced stronger and more rigid Bis-EMA polymers (p < 0.05). Significance. Aromatic dimethacrylates with different chain extender lengths can be a useful alternative in controlling the properties of a dental material, adjusting those to specific applications. (c) 2007 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

引用

页码：165 / 171

页数：7

共 26 条

[1]

Ahn KD, 1999, J APPL POLYM SCI, V71, P2033, DOI 10.1002/(SICI)1097-4628(19990321)71:12<2033::AID-APP13>3.0.CO

[2]

2-I

[3] New aromatic tert-amines for application as photoinitiator components in photocurable dental materials [J].

Ahn, KD ;

Han, DK ;

Lee, SH ;

Lee, CW .

MACROMOLECULAR CHEMISTRY AND PHYSICS, 2003, 204 (13) :1628-1635

[4] Photopolymerization kinetics of multifunctional monomers [J].

Andrzejewska, E .

PROGRESS IN POLYMER SCIENCE, 2001, 26 (04) :605-665

[5] REACTION-KINETICS AND VOLUME RELAXATION DURING POLYMERIZATIONS OF MULTIETHYLENE GLYCOL DIMETHACRYLATES [J].

ANSETH, KS ;

KLINE, LM ;

WALKER, TA ;

ANDERSON, KJ ;

BOWMAN, CN .

MACROMOLECULES, 1995, 28 (07) :2491-2499

[6] Synthesis and characterization of BTDA-based dimethacrylate dental adhesive monomer and its interaction with Ca2+ ions [J].

Atai, M ;

Nekoomanesh, M ;

Hashemi, SA ;

Yeganeh, H .

JOURNAL OF APPLIED POLYMER SCIENCE, 2002, 86 (13) :3246-3249

[7] 2,3-Epithiopropyl methacrylate as functionalized monomer in a dental adhesive [J].

Aulo Ogliari, Fabricio ;

Luiza Tebaldi de Sordi, Marli ;

Antonio Ceschi, Marco ;

Liberato Petzhold, Cesar ;

Fernando Demarco, Flavio ;

Piva, Evandro .

JOURNAL OF DENTISTRY, 2006, 34 (07) :472-477

[8] The effect of post-cure heating on residual, unreacted monomer in a commercial resin composite [J].

Bagis, YH ;

Rueggeberg, FA .

DENTAL MATERIALS, 2000, 16 (04) :244-247

[9] Evaluation of the network parameter in aliphatic poly(urethane dimethacrylate)s by dynamic thermal analysis [J].

Barszczewska-Rybarek, I ;

Gibas, M ;

Kurcok, M .

POLYMER, 2000, 41 (09) :3129-3135

[10]

Bogdal D, 1997, J APPL POLYM SCI, V66, P2333, DOI 10.1002/(SICI)1097-4628(19971219)66:12<2333::AID-APP14>3.0.CO

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