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Karaca TH, Çiçek B, Aydoğmuş T, Sun Y. The effect of graphene-nanoplatelet and nano-teflon on mechanical properties of UV photo-resin 3D printer products. POLYM-PLAST TECH MAT 2022. [DOI: 10.1080/25740881.2022.2061862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
| | - Bünyamin Çiçek
- Machine and Metal Technologies, Hitit University, Corum, Turkey
| | - Tuna Aydoğmuş
- Electric and Energy, Hitit University, Corum, Turkey
| | - Yavuz Sun
- Metallurgy and Material Engineering, Karabuk University, Karabuk, Turkey
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2
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Kanokwijitsilp T, Körner M, Prucker O, Anton A, Lübke J, Rühe J. Kinetics of Photocrosslinking and Surface Attachment of Thick Polymer Films. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00121] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thananthorn Kanokwijitsilp
- Laboratory for Chemistry and Physics of Interfaces, Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 103, Freiburg 79110, Germany
| | - Martin Körner
- Laboratory for Chemistry and Physics of Interfaces, Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 103, Freiburg 79110, Germany
| | - Oswald Prucker
- Laboratory for Chemistry and Physics of Interfaces, Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 103, Freiburg 79110, Germany
| | - Alexandra Anton
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79085, Germany
| | - Jan Lübke
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg 79085, Germany
| | - Jürgen Rühe
- Laboratory for Chemistry and Physics of Interfaces, Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 103, Freiburg 79110, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, Freiburg 79110, Germany
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3
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Sprick E, Becht JM, Graff B, Salomon JP, Tigges T, Weber C, Lalevée J. New hydrogen donors for amine-free photoinitiating systems in dental materials. Dent Mater 2021; 37:382-390. [PMID: 33468405 DOI: 10.1016/j.dental.2020.12.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/29/2020] [Accepted: 12/31/2020] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The two-component Camphorquinone (CQ)/aromatic amine system is well-established and clearly corresponds to the reference system used in all photopolymerizable dental adhesives and composites. However, this CQ/amine system still suffers from the presence of aromatic amines that can be referenced as toxic. Therefore, the aim of this work is to develop amine-free photoinitiating systems (PISs) for the polymerization of a representative dental methacrylate resins upon blue light irradiation. The proposed strategy is based on the in-silico design (by molecular modelling) of new hydrogen donors (amine-free) bearing a copolymerizable moiety (methacrylate functionality) to ensure their low migration/leaching properties from the synthesized polymer. The new proposed PISs are compared to the well-established CQ/amine system for the polymerization of different methacrylate blends upon exposure to a commercial blue dental LED centered at 477 nm. METHODS Molecular orbitals calculations are used to design new hydrogen donors exhibiting low C-H bond dissociation energies. Based on this in-silico design, the syntheses of new co-initiators are reported here for the first time. Real-time FTIR experiments are used to monitor the photopolymerization profiles. Color indexes measurements were also carried out to investigate the bleaching properties of the new proposed systems. RESULTS Three new co-initiators are proposed as alternatives to aromatic amines in dental materials in combination with camphorquinone. The performances of the new proposed amine-free PISs for the photopolymerization of thick (1.4 mm) samples of methacrylate upon exposure to a blue dental LED under air are excellent. Similar or better polymerization performances are obtained with the new proposed amine-free systems compared to those reached with the CQ/amine reference. Excellent bleaching properties are also found. The involved chemical mechanisms are investigated through molecular orbitals calculations.
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Affiliation(s)
- Elodie Sprick
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, 68100 Mulhouse, France; Université de Strasbourg, 67000 Strasbourg, France
| | - Jean-Michel Becht
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, 68100 Mulhouse, France; Université de Strasbourg, 67000 Strasbourg, France
| | - Bernadette Graff
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, 68100 Mulhouse, France; Université de Strasbourg, 67000 Strasbourg, France
| | - Jean-Pierre Salomon
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, 68100 Mulhouse, France; Université de Strasbourg, 67000 Strasbourg, France; Faculty of Dentistry, University of Lorraine, France; Oregon Health and Science University, Portland, Oregon, USA
| | - Thomas Tigges
- Dentsply Sirona, De-Trey-Straβe 1, 78467 Konstanz, Germany
| | | | - Jacques Lalevée
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, 68100 Mulhouse, France; Université de Strasbourg, 67000 Strasbourg, France.
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4
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Li J, Li W, Gao X, Liu L, Shen M, Chen H, Zhu M, Zeng L, Zeng EY. Occurrence of multiple classes of emerging photoinitiators in indoor dust from E-waste recycling facilities and adjacent communities in South China and implications for human exposure. ENVIRONMENT INTERNATIONAL 2020; 136:105462. [PMID: 31924579 DOI: 10.1016/j.envint.2020.105462] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 12/23/2019] [Accepted: 01/02/2020] [Indexed: 06/10/2023]
Abstract
Photoinitiators (PIs) are indispensable additives in photopolymerization. PI-containing consumables, such as adhesives, coatings, UV-cured inks and light-sensitive materials, are widely used in various electronic products. Nevertheless, there is no information concerning the identification of PIs as emerging contaminants from e-waste recycling. In this study, 25 PIs, including 9 benzophenones (BZPs), 8 amine coinitiators (ACIs), 4 thioxanthones (TXs) and 4 phosphine oxides (POs), were analyzed in indoor dust from typical e-waste recycling facilities and adjacent rural communities, as well as from control urban communities. All 25 target PIs were detected in e-waste dust, while only 17 and 15 of the 25 target PIs were detected in local home dust and urban home dust, respectively. The PIs detected in all dust samples were dominated by BZPs and POs, followed by ACIs and TXs. Most PIs exhibited significantly higher levels in e-waste dust than local or urban home dust. The influence of PI contamination on the local household environment by dust diffusion and transport from near e-waste recycling facilities may be lower due to the low volatility of most PIs. Characteristic composition profiles of PIs for indoor dust from the e-waste recycling area were identified and compared to those from the control area. Significant correlations were found among almost all the frequently detected PIs in the e-waste dust, indicating their similar application in electronic products and common emission from e-waste recycling. The estimated daily intakes of PIs via dust ingestion for the e-waste dismantling workers, as determined by using Monte Carlo analysis, were several times higher than those for the local adult residents and the general urban adult residents, which should be an emerging concern. To the best of our knowledge, this is the first report showing that e-waste dismantling/recycling activities lead to largely common releases of a wide range of multiple classes of PIs.
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Affiliation(s)
- Juan Li
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
| | - Wenzheng Li
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
| | - Xiaoming Gao
- Quality Management Center, National Institutes for Food and Drug Control, Beijing 102629, China
| | - Liangying Liu
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
| | - Mingjie Shen
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
| | - Hui Chen
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
| | - Mingshan Zhu
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
| | - Lixi Zeng
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China.
| | - Eddy Y Zeng
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
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5
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Li J, Lam JCW, Li W, Du B, Chen H, Zeng L. Occurrence and Distribution of Photoinitiator Additives in Paired Maternal and Cord Plasma in a South China Population. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:10969-10977. [PMID: 31411872 DOI: 10.1021/acs.est.9b03127] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Photoinitiators (PIs) are widely used in industrial polymerization and have been detected as emerging contaminants in environmental matrixes. It has been reported that humans are exposed to PIs, but the maternal-fetal transmission of PIs has not been documented. In this study, we analyzed 21 PIs (9 benzophenones, BZPs; 8 amine co-initiators, ACIs; and 4 thioxanthones, TXs) in matched maternal-cord plasma samples from 49 pregnant women in South China. Sixteen of the 21 target PIs were found in maternal plasma at concentrations of ∑PIs (sum of the detected PIs) from 303 to 3500 pg/mL. Meanwhile, 12 PIs were detected in cord plasma with ∑PIs from 104 to 988 pg/mL. The PIs detected in both maternal and cord plasma samples were dominated by BZPs, followed by ACIs and TXs. Different groups of PIs showed structure-dependent placental transfer efficiencies (PTEs). The PTEs were generally less than 100% for BZPs but greater than 100% for ACIs and TXs. By further theoretical calculation, we revealed the critical structural features of PIs that affect PTEs. This is the first study to investigate the occurrence and distribution of PIs in paired maternal and cord plasma, and it sheds light on the potential mechanism of structure-dependent placental transfer.
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Affiliation(s)
- Juan Li
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment , Jinan University , Guangzhou 511443 , China
| | - James C W Lam
- Department of Science and Environmental Studies , The Education University of Hong Kong , Hong Kong SAR , China
| | - Wenzheng Li
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment , Jinan University , Guangzhou 511443 , China
| | - Bibai Du
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment , Jinan University , Guangzhou 511443 , China
| | - Hui Chen
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment , Jinan University , Guangzhou 511443 , China
| | - Lixi Zeng
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment , Jinan University , Guangzhou 511443 , China
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6
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Liu R, Mabury SA. Identification of Photoinitiators, Including Novel Phosphine Oxides, and Their Transformation Products in Food Packaging Materials and Indoor Dust in Canada. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:4109-4118. [PMID: 30942572 DOI: 10.1021/acs.est.9b00045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Although photopolymerization is generally considered a green technology, the contamination of foodstuffs by photoinitiators (PIs), an essential component of photopolymerization systems, has recently attracted notice. Despite this interest, little attention has been paid to PI contamination in the environment. To date, only one study, performed in China, has reported the occurrence of PIs in the environment. In the present study, the occurrence of 25 PI additives with discrete molecular structures was investigated in food packaging materials and indoor dust. The PIs studied here include benzophenones (BZPs), thioxanthones (TXs), amine co-initiators (ACIs), and novel phosphine oxides (POs). Twenty-four PIs were detected in food packaging materials. Total concentrations of PIs (∑PIs) ranged between 122 and 44 113 ng/g, with a geometric mean (GM) of 3375 ng/g. The photodegradation of PIs in food packaging materials was investigated for the first time, and the half-lives of PIs in these materials were found to range from 32 to 289 h. These 24 PIs were also detected in indoor dust samples (GM of ∑PIs = 1483 ng/g). The relative abundances of different PIs were found to vary between the packaging materials and the indoor dust, which is attributed in part to the different stabilities of different PIs under simulated sunlight. Using standards synthesized in our lab, four TX transformation products (GM: 34.8 ng/g) were also detected in indoor dust. The concentrations of the transformation products were higher than the concentrations of the parent chemicals in indoor dust. Thus, further studies exploring human exposure to TXs should include these transformation products to avoid underestimation. This is the first report of PIs and relevant transformation products in the indoor environment in North America.
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Affiliation(s)
- Runzeng Liu
- Department of Chemistry , University of Toronto , 80 Saint George Street , Toronto , M5S 3H6 , Ontario , Canada
| | - Scott A Mabury
- Department of Chemistry , University of Toronto , 80 Saint George Street , Toronto , M5S 3H6 , Ontario , Canada
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Liu R, Mabury SA. First Detection of Photoinitiators and Metabolites in Human Sera from United States Donors. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:10089-10096. [PMID: 30063130 DOI: 10.1021/acs.est.8b02457] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Photoinitiators (PIs), including benzophenones (BZPs), thioxanthones (TXs), and amine co-initiators (ACIs), are commonly used in photopolymerization systems, and their contamination in foodstuffs and the environment is attracting attention. Although humans are likely exposed to PIs, no data on human burdens of these chemicals are available. In this study, 18 PIs were detected in 50 individual human serum samples with concentrations of ΣPIs (sum of the detected PIs) from 423 to 2870 pg/mL (geometric mean, GM: 836 pg/mL). ΣBZPs (231-1240 ng/g,; GM: 593 pg/mL) were the dominant components, while ΣTXs (21.0-1431 ng/g; GM: 145 pg/mL) and ΣACIs (11.3-976 ng/g; GM: 48.5 pg/mL) were much lower. Data analysis found significantly higher concentrations of most PIs in the male sera than in the female ( p < 0.05). ΣPIs (2921-4139 ng/g; GM: 3621 pg/mL) were also detected in five pooled serum samples, each from at least 1000 donors, indicating the prevalent human burdens of PIs in a large population. Human liver S9 biodegradations of representative PIs, 2-isopropylthioxanthone (2-ITX) and 2,4-diethylthioxanthone (DETX), were conducted. Hydroxylation, sulfoxide, and sulfone metabolites of DETX and 2-ITX were identified by high resolution mass spectrometry in human liver S9 incubation systems. With synthesized standards, the sulfoxide and sulfone metabolites were successfully detected in the human serum samples, which contributed substantially to total human burdens. The ubiquitous presence of PIs in human sera indicates significant human exposure to PIs, although photopolymerization reaction has been generally considered a green technology.
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Affiliation(s)
- Runzeng Liu
- Department of Chemistry , University of Toronto , 80 St. George Street , Toronto , Ontario M5S 3H6 , Canada
| | - Scott A Mabury
- Department of Chemistry , University of Toronto , 80 St. George Street , Toronto , Ontario M5S 3H6 , Canada
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8
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Shining a light on high volume photocurable materials. Dent Mater 2018; 34:695-710. [DOI: 10.1016/j.dental.2018.02.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 02/22/2018] [Accepted: 02/28/2018] [Indexed: 12/29/2022]
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9
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Bouzrati-Zerelli M, Kirschner J, Fik CP, Maier M, Dietlin C, Morlet-Savary F, Fouassier JP, Becht JM, Klee JE, Lalevée J. Silyl Glyoxylates as a New Class of High Performance Photoinitiators: Blue LED Induced Polymerization of Methacrylates in Thin and Thick Films. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01370] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Mariem Bouzrati-Zerelli
- Institut
de Science des Matériaux de Mulhouse IS2M, UMR CNRS 7361, UHA, 15, rue Jean Starcky, Cedex 68057 Mulhouse, France
| | - Julie Kirschner
- Institut
de Science des Matériaux de Mulhouse IS2M, UMR CNRS 7361, UHA, 15, rue Jean Starcky, Cedex 68057 Mulhouse, France
| | - Christoph P. Fik
- Dentsply Sirona
Restorative, De-Trey-Str. 1, 78467 Konstanz, Germany
| | - Maximilian Maier
- Dentsply Sirona
Restorative, De-Trey-Str. 1, 78467 Konstanz, Germany
| | - Celine Dietlin
- Institut
de Science des Matériaux de Mulhouse IS2M, UMR CNRS 7361, UHA, 15, rue Jean Starcky, Cedex 68057 Mulhouse, France
| | - Fabrice Morlet-Savary
- Institut
de Science des Matériaux de Mulhouse IS2M, UMR CNRS 7361, UHA, 15, rue Jean Starcky, Cedex 68057 Mulhouse, France
| | - Jean Pierre Fouassier
- Institut
de Science des Matériaux de Mulhouse IS2M, UMR CNRS 7361, UHA, 15, rue Jean Starcky, Cedex 68057 Mulhouse, France
| | - Jean-Michel Becht
- Institut
de Science des Matériaux de Mulhouse IS2M, UMR CNRS 7361, UHA, 15, rue Jean Starcky, Cedex 68057 Mulhouse, France
| | - Joachim E. Klee
- Dentsply Sirona
Restorative, De-Trey-Str. 1, 78467 Konstanz, Germany
| | - Jacques Lalevée
- Institut
de Science des Matériaux de Mulhouse IS2M, UMR CNRS 7361, UHA, 15, rue Jean Starcky, Cedex 68057 Mulhouse, France
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Graff B, Klee JE, Fik C, Maier M, Fouassier JP, Lalevée J. Development of Novel Photoinitiators as Substitutes of Camphorquinone for the LED Induced Polymerization of Methacrylates: A Bis-Silyl Ketone. Macromol Rapid Commun 2016; 38. [DOI: 10.1002/marc.201600470] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 08/10/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Bernadette Graff
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361, UHA; 15, rue Jean Starcky 68057 Mulhouse Cedex France
| | | | | | | | - Jean Pierre Fouassier
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361, UHA; 15, rue Jean Starcky 68057 Mulhouse Cedex France
| | - Jacques Lalevée
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361, UHA; 15, rue Jean Starcky 68057 Mulhouse Cedex France
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A novel photoinitiating system producing germyl radicals for the polymerization of representative methacrylate resins: Camphorquinone/R3GeH/iodonium salt. Dent Mater 2016; 32:1226-1234. [PMID: 27567540 DOI: 10.1016/j.dental.2016.07.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 06/30/2016] [Accepted: 07/16/2016] [Indexed: 11/22/2022]
Abstract
OBJECTIVES The aim of our study is to find an amine free photoinitiating system (PIS) for the polymerization of representative dental methacrylate resins. A photoinitiating system (PIS) based on camphorquinone (CQ)/triphenylgermanium hydride/diphenyl iodonium hexafluorophosphate is proposed and compared to the conventional CQ/amine couple. The polymerization monitoring of thin (∼20μm) and thick (1.4mm) samples of a bisphenol A-glycidyl methacrylate (Bis-GMA)/triethyleneglycol dimethacrylate (TEGDMA) blend (70%/30% w/w) and of a urethane dimethacrylate (UDMA) upon exposure to a commercial blue LED centered at 477nm under air or in laminate is described. Finally, the impact of the photoinitiating system composition on the final polymer color is evaluated in detail. METHODS FTIR and DSC experiments are used to record the photopolymerization profiles. ESR spectrometry and steady state photolysis are used to detect the produced radicals. Color measurements are carried out to determine the key parameters in the bleaching of the different dental formulations. RESULTS The efficiency of the newly proposed PISs for the photopolymerization of BisGMA/TEGDMA and UDMA for thin (20μm) or for thick (1.4mm) samples upon exposure to a dental blue LED under air is excellent. It is noticeably higher than that of the CQ/amine reference couple. Excellent bleaching properties are also observed under irradiation in presence of the new PISs. A good correlation is found between the sample bleaching and the amount of Ph3GeH in the formulation. The excited state processes could be established. The overall chemical mechanisms for the initiation step were also clarified.
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12
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Liu R, Lin Y, Hu F, Liu R, Ruan T, Jiang G. Observation of Emerging Photoinitiator Additives in Household Environment and Sewage Sludge in China. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:97-104. [PMID: 26649800 DOI: 10.1021/acs.est.5b04977] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Photoinitiators (PIs) are widely used additives in industrial polymerization process, the contamination of which through migration into foodstuffs has been subjected to increasing public scrutiny. Nevertheless, little attention has been paid to the PI residue levels and potential exposure pathways from other environmental compartments. In the present study, the occurrence of PI additives with discrete molecular structures, that is, nine benzophenones (BZPs), four thioxanthones (TXs), and eight amine co-initiators (ACIs), was investigated in commercial products, indoor dust and sewage sludge samples. Nine PI compounds were positively detected in ultraviolet curable resins with concentrations of ∑PIs (sum of the detected PIs) up to 2.51 × 10(4) ng/g, and 20 PIs can be found in food contact materials with concentrations of ∑PIs varying from 65.9 to 6.93 × 10(3) ng/g. The wide usage of PIs in commercial products led to the occurrence of 19 PIs in indoor dust, with concentrations of ∑PIs in the range of 245-5.68 × 10(3) ng/g. Meanwhile, all 21 targeted PIs could be identified in the sewage sludge, with concentrations from 67.6 to 2.03 × 10(3) ng/g. Distinct PI composition profiles were observed in different investigated compartments, and BZPs were the dominant homologues in all samples. Most of the target PIs were further identified as class III chemicals by toxic hazard estimation algorithm (Toxtree), which indicates the compounds might be of significant toxicity or have reactive functional groups.
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Affiliation(s)
- Runzeng Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, China , 100085
| | - Yongfeng Lin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, China , 100085
| | - Fanbao Hu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, China , 100085
| | - Ruirui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, China , 100085
| | - Ting Ruan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, China , 100085
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, China , 100085
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13
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Morlet-Savary F, Klee JE, Pfefferkorn F, Fouassier JP, Lalevée J. The Camphorquinone/Amine and Camphorquinone/Amine/Phosphine Oxide Derivative Photoinitiating Systems: Overview, Mechanistic Approach, and Role of the Excitation Light Source. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500184] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fabrice Morlet-Savary
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361; UHA, 15, rue Jean Starcky 68057 Mulhouse CEDEX France
| | | | | | - Jean Pierre Fouassier
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361; UHA, 15, rue Jean Starcky 68057 Mulhouse CEDEX France
| | - Jacques Lalevée
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361; UHA, 15, rue Jean Starcky 68057 Mulhouse CEDEX France
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14
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Leprince JG, Palin WM, Hadis MA, Devaux J, Leloup G. Progress in dimethacrylate-based dental composite technology and curing efficiency. Dent Mater 2013. [PMID: 23199807 DOI: 10.1016/j.dental.2012.11.005] [Citation(s) in RCA: 324] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Julian G Leprince
- School of Dentistry and Stomatology, Université catholique de Louvain, Brussels, Belgium.
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15
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Photoinitiator type and applicability of exposure reciprocity law in filled and unfilled photoactive resins. Dent Mater 2011; 27:157-64. [DOI: 10.1016/j.dental.2010.09.011] [Citation(s) in RCA: 121] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2010] [Revised: 08/04/2010] [Accepted: 09/29/2010] [Indexed: 11/17/2022]
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