Novel visible photoinitiators systems for free-radical/cationic hybrid photopolymerization

Podsiadly, Radosław; Podemska, Karolina; Szymczak, Agnieszka

doi:10.1016/j.dyepig.2011.05.012

Cited by 55 publications

(32 citation statements)

References 29 publications

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“…However, after 20 seconds, 5.61 % conversion was obtained, which is higher than F-1, and a baseline line was observed at 350 s (75.86 %). The F-2 system showed great conversion (78.73%), higher than standard fluorescein, this could be explained due to chlorine atoms in the structure, which form the excited triplet state in the dye, promote radical formation, and consequently faster polymerization reaction [27,28].…”

Section: Middle Infrared Spectroscopy (Mir)mentioning

confidence: 98%

New fluorescein dye derivatives and their use as an efficient photoiniator using blue light LED

Alarcon

Gaglieri

Silva

et al. 2017

Journal of Photochemistry and Photobiology A: Chemistry

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Graphical abstractThis work shown synthesis of dimethacrylate polymers using a new fluorescein dye derivatives by blue light LED. The thermal characterization was made by TG-DTA, conversion degree was obtained by MIR and DSC, and morphological aspects was obtained by SEM. Highlights New fluorescein dyes derivatives was used to inititors in photopolymerization. The chlorinated dyes showed higher conversions. Brominated dyes showed good radical stabilization and low conversion. AbstractThis work investigates the degree of conversion, thermal properties, and morphological features of polymers obtained using UDMA monomer and fluorescein and its derivatives dyes as photoinitiator. Photopolymerization has opened new research and material due to its synthesis ability as well as ecological and economic advantages.Fluorescein is a dye with great fluorescent properties; therefore, it could be used as initiator in photopolymerization, including its derivatives. SimultaneousTermogravimetry-Differential Thermal Analysis and Derivative Thermogravimetric (TG/DTG-DTA), Differential Scanning Calorimetry (DSC), Middle Infrared Spectroscopy (MIR), and Scanning Electronic Microscopy (SEM) were used to determine thermal properties, degree of conversion, and morphological characteristics of polymers obtained. The data show that the use of fluorescein and its derivatives as photoinitiators did not change the thermal stability of the polymer (193.13±7.9 °C);however, the chlorinated dyes produced a better degree of conversion (78.73% to F-2 and 69.36% to F-5) than brominated dyes (21.18% to F-3 and 1.21% to F-6), resulting in solid rigid polymers.

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Section: Middle Infrared Spectroscopy (Mir)mentioning

confidence: 98%

New fluorescein dye derivatives and their use as an efficient photoiniator using blue light LED

Alarcon

Gaglieri

Silva

et al. 2017

Journal of Photochemistry and Photobiology A: Chemistry

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“…Moreover, the oxygen inhibition effect increases when the light intensities decrease. Therefore, up until recently, the free radical/cationic hybrid polymerization under visible lights was hardly carried out and restricted to the use of systems absorbing in the near UV/visible wavelength range (see e.g., [106]). …”

Section: Visible Light Curing Of Ipnsmentioning

confidence: 99%

Photochemical Production of Interpenetrating Polymer Networks; Simultaneous Initiation of Radical and Cationic Polymerization Reactions

Fouassier

Lalevée

2014

Polymers

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Abstract:In this paper, we propose to review the ways to produce, through photopolymerization, interpenetrating polymer networks (IPN) based, e.g., on acrylate/epoxide or acrylate/vinylether blends and to outline the recent developments that allows a one-step procedure (concomitant radical/cationic polymerization), under air or in laminate, under various irradiation conditions (UV/visible/near IR; high/low intensity sources; monochromatic/polychromatic sources; household lamps/laser diodes/Light Emitting Diodes (LEDs)). The paper illustrates the encountered mechanisms and the polymerization profiles. A short survey on the available monomer systems and some brief examples of the attained final properties of the IPNs is also provided.

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“…Photoinitiated polymerization is widely used in many applications such as 3D printing, coatings, inks, and adhesives. Photoinitiators (PIs) efficient under UV and near‐UV lights have been extensively developed in the past, but the development of visible light sources such as LEDs requires the development of new photoinitiating systems (PISs) . The majority of the PISs able to initiate radical polymerization in the visible spectral region (especially in the 400–500 nm region) are two‐component PISs based on a PI and a coinitiator called hydrogen donor.…”

Section: Introductionmentioning

confidence: 99%

Iodonium sulfonates as high‐performance coinitiators and additives for CQ‐based systems: Toward aromatic amine‐free photoinitiating systems

Kirschner

Szillat²,

Bouzrati-Zerelli

et al. 2019

J. Polym. Sci. Part A: Polym. Chem.

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Iodonium sulfonates are proposed here as a new class of high‐performance coinitiators for camphorquinone (CQ)‐based systems for the polymerization of methacrylates under blue light irradiation. When combined with CQ, the new proposed coinitiators present excellent polymerization performances and are excellent candidates for the replacement of tertiary aromatic amines subjected to toxicological concerns in the well‐established CQ/amine photoinitiating system (PIS). Remarkably, good bleaching properties are obtained after polymerization. The use of the new PIS for dental adhesives is also investigated. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, 1664–1669

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Novel visible photoinitiators systems for free-radical/cationic hybrid photopolymerization

Cited by 55 publications

References 29 publications

New fluorescein dye derivatives and their use as an efficient photoiniator using blue light LED

New fluorescein dye derivatives and their use as an efficient photoiniator using blue light LED

Photochemical Production of Interpenetrating Polymer Networks; Simultaneous Initiation of Radical and Cationic Polymerization Reactions

Iodonium sulfonates as high‐performance coinitiators and additives for CQ‐based systems: Toward aromatic amine‐free photoinitiating systems

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