ICCAS OpenIR
Effect of initiator on photopolymerization of acidic, aqueous dental model adhesives
Guo, Xinglin1,2; Peng, Zhonghua3; Spencer, Paulette4; Wang, Yong1
2009-09-15
Source PublicationJOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
ISSN1549-3296
Volume90AIssue:4Pages:1120-1127
AbstractThis study evaluated different initiator systems in self-etching model adhesives, in which camphorquinone (CQ) or [3-(3,4-dimethyl-9-oxo-9H-thioxanthen-2-yloxy)-2-hydroxylpropy] trimethylammonium chloride (QTX) was employed as a photoinitiator (dye). N-phenylglycine (NPG), ethyl 4-dimethylaminobenzoate (4E) or 2-(dimethylamino) ethyl methacrylate (DMAEMA) was used as the coinitiator (CI). The role of diphenyliodonium hexafluorophosphate (DPIHP) in the polymerization process was also studied. The concentrations of dye, CI, and DPIHP in model adhesives were all maintained at 0.022 mmol per gram monomer. The model adhesive contained two monomers: (bis[2-(methacryloyloxy)ethyl] phosphate) (2MP) and 2-hydroxyethyl methacrylate (HEMA) whose mass ratio was 1:1, thus representing an acidic and hydrophilic formulation. The polymerization rate and the degree of conversion (DC) of the model adhesives with 5, 15, or 25% water content were determined using FTIR/ATR with a time-based spectrum analysis. The results indicated that with CQ as the photoinitiator, 4E appeared to be the most efficient CI, whereas the CQ-DMAEMA combination led to very low radical generation efficiency (DC < 5%). DPIHP exhibited little effect on the polymerization process. With QTX as the photoinitiator, however, DPIHP played an essential role. Without DPIHP, all three QTX-CI systems failed to initiate polymerization (DC < 5%). The QTX-DPIHP combination, on the other hand, was found to be a viable initiator system. The above results provide the critical information for the development of self-etching adhesive systems. (C) 2008 Wiley Periodicals, Inc. J Biomed Mater Res 90A: 1120-1127, 2009
KeywordSelf-etching Adhesive Degree Of Conversion Photo-polymerization Rate Acidic And Hydrophilic Monomer Ftir
DOI10.1002/jbm.a.32185
Indexed BySCI
Language英语
WOS IDWOS:000268940100017
PublisherWILEY-LISS
Citation statistics
Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67546
Collection中国科学院化学研究所
Corresponding AuthorWang, Yong
Affiliation1.Univ Missouri, Sch Dent, Dept Oral Biol, Kansas City, MO 64108 USA
2.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
3.Univ Missouri, Dept Chem, Kansas City, MO 64110 USA
4.Univ Kansas, Sch Engn, Bioengn Res Ctr, Lawrence, KS 66045 USA
Recommended Citation
GB/T 7714
Guo, Xinglin,Peng, Zhonghua,Spencer, Paulette,et al. Effect of initiator on photopolymerization of acidic, aqueous dental model adhesives[J]. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A,2009,90A(4):1120-1127.
APA Guo, Xinglin,Peng, Zhonghua,Spencer, Paulette,&Wang, Yong.(2009).Effect of initiator on photopolymerization of acidic, aqueous dental model adhesives.JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A,90A(4),1120-1127.
MLA Guo, Xinglin,et al."Effect of initiator on photopolymerization of acidic, aqueous dental model adhesives".JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A 90A.4(2009):1120-1127.
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