Abstract
We attempted to improve the low water resistance of isosorbide glycidyl methacrylate (IsoGMA), which was developed to replace bisphenol-A glycidyl methacrylate (BisGMA), a bisphenol-A based dental material. For this purpose, a new isosorbide-based methacrylate, isosorbide propyl methacrylate (IsoPMA), which has no hydroxyl groups, was synthesized. IsoPMA had low viscosity compared to IsoGMA (246.6 cP vs 6810 cP at 25 °C) and less water sorption when it was used as a binder of a composite (2.07 vs 28 μg/mm3). Although the flexural strength of the IsoPMA resin was much lower than that of IsoGMA (38.5 vs 74.2 MPa), the reinforcing effect by barium silicate on the flexural strength of IsoPMA was larger than that of IsoGMA (38.5 → 93.0 MPa for IsoPMA vs 74.2 → 78.6 MPa for IsoGMA) because fewer voids were formed. Unlike in the IsoGMA composite, no internal cracks were found in the IsoPMA composite after the water uptake experiment; its flexural strength decreased by 40% from the initial value, but was better than the flexural strength of IsoGMA, which decreased by 70%.
Original language | English |
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Pages (from-to) | 629-635 |
Number of pages | 7 |
Journal | European Polymer Journal |
Volume | 112 |
DOIs | |
Publication status | Published - 2019 Mar |
Bibliographical note
Funding Information:This study was supported by the R&D Program (kitech EO-18-0003 , EO-18-0025 ) funded by Korea Institute of Industrial Technology, Republic of Korea .
Publisher Copyright:
© 2018 Elsevier Ltd
Keywords
- Flexural strength
- Isosorbide
- Isosorbide-based dental material
- Viscosity
- Water sorption
ASJC Scopus subject areas
- General Physics and Astronomy
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry