Synthesis, characterization and evaluation of new fluorene-based dimethacrylates for formulating dental composites
β Scribed by B. M. Culbertson; A. Tiba; J. Sang; Y. N. Liu
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 143 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1042-7147
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A novel bis(ether anhydride) monomer, 9,9-bis [4-(3,4-dicarboxyphenoxy)phenyl]fluorene dianhydride (4), was synthesized from the nitrodisplacement of 4-nitrophthalonitrile by the bisphenoxide ion of 9,9-bis(4-hydroxyphenyl)fluorene (1), followed by alkaline hydrolysis of the intermediate tetranitril
FIGURE 6. Water sorption of photopolymerized (VLC) IΒ±IV dimethacrylates/TEGDMA formulations compared with the VLC BisGMA/TEGDMA formulation.
The goal of this investigation was to optimize the synthesis of silazane-based polymers for processing fibre-reinforced ceramic matrix composites (CMCs). Liquid oligomeric silazanes were synthesized by ammonolysis of chlorosilanes and characterized spectroscopically (FTIR, NMR) as well as by element