Conversion in Visible Light-cured Resins : Conversion and Amount of Photoinitiator, Part I
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- HIROSE Hideharu
- Department of Dental Materials, Nihon University School of Dentistry
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- KIKUCHI Hisaji
- Department of Dental Materials, Nihon University School of Dentistry
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- YOSHIHASHI Kazue
- Department of Dental Materials, Nihon University School of Dentistry
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- ANZAI Misaki
- Department of Dental Materials, Nihon University School of Dentistry
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- NISHIYAMA Minoru
- Department of Dental Materials, Nihon University School of Dentistry
Bibliographic Information
- Other Title
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- 可視光線重合型レジンの重合率に関する基礎的研究 : 触媒組成と重合率との関係(I)
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Abstract
The optimum photoinitiator composition, and the conversion after polymerization, of visible light-cured resins, were determined.As monomers, synthesized cyclophosphazene monomer P4N4(CF3CH2O)1[CH2=C(CH3)COOCH2CH2O]7[4PN-(TF)1-(EMA)7]and commercial Tri-EDMA were prepared for the visible light-cured resins by changing the amount of photoinitiators.As photosensitizers, comphorquinone(CQ)and dibenzoyl(DB)were used.As a reducing agent, methacryloxyethyl-p-dimethylaminobenzoate was used.Eighteenth trial resins were investigated by means of a fourier transform infrared spectrophotometer(Shimadzu FT-IR 4300)by the liquid film method.The infrared absorbance measurements were made before irradiation and chronologically repeated after the resins had been polymerized by irradiation.The quantities of remaining double bonds(RDB)were determined and the data expressed as percentages of the total amount of double bonds in the unirradiated resins.The RDB for 4PN-(TF)1-(EMA)7 resins showed 56〜78% at 5min after the start of irradiation, 47〜71% at 1 day.The RDB for Tri-EDMA resins showed 27〜63% at 5 min after the start of irradiation, 15〜47% at 1 day.The RDB significantly decreased with the increase in the mixed amount of CQ for 4PN-(TF)1-(EMA)7 resins, and that of DB for Tri-EDMA resins.
Journal
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- The Journal of the Japanese Society for Dental Materials and Devices
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The Journal of the Japanese Society for Dental Materials and Devices 10 (2), 213-218, 1991
The Japanese Society for Dental Materials and Devices
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Details 詳細情報について
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- CRID
- 1390001204208413184
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- NII Article ID
- 110002997411
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- NII Book ID
- AN00127279
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- ISSN
- 21884188
- 02865858
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed