Photoinitiators with Functional Groups. Part I. Polymer Photoinitiators

Klos, R.; Gruber, Heinrich; Greber, G.

doi:10.1080/00222339108054070

Cited by 22 publications

(8 citation statements)

References 14 publications

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“…4), several strategies have been developed since the previous studies on the acrylated benzoin ethers and hydroxyalkylphenyl ketones (see ref. They include today the design and the preparation of oligomeric 17 or polymeric [18][19][20][21] photoinitiators, multi-functional photoinitiators, [22][23][24][25] copolymerizable photoinitiators, [26][27][28][29][30][31][32] and one-component Type II photoinitiators. in ref.…”

Section: Introductionmentioning

confidence: 99%

Naphthalimide based methacrylated photoinitiators in radical and cationic photopolymerization under visible light

Xiao¹,

Dumur²,

Frigoli³

et al. 2013

Polym. Chem.

124

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International audienceThe abilities of two naphthalimide derivatives with a methacryloyl group to initiate, when incorporated in multi-component systems, a ring-opening polymerization of epoxides and a radical polymerization of acrylates under different irradiation sources (e.g. very soft halogen lamp irradiation, laser diode at 457 nm, laser diode at 405 nm and blue LED bulb at 462 nm) have been investigated. One of them is particularly efficient for the cationic and radical photopolymerization of an epoxide/acrylate blend in a one-step hybrid cure and leads to the formation of an interpenetrated polymer network IPN (30 s for getting tack free coatings). The migration stability of one of these naphthalimide derivatives is found to be excellent in the cured polyacrylates and IPNs. The photochemical mechanisms are studied by steady state photolysis, fluorescence, cyclic voltammetry, electron spin resonance spin trapping and laser flash photolysis techniques

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Section: Introductionmentioning

confidence: 99%

Naphthalimide based methacrylated photoinitiators in radical and cationic photopolymerization under visible light

Xiao¹,

Dumur²,

Frigoli³

et al. 2013

Polym. Chem.

124

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“…As an important component in the polymerization process, the photoinitiator or the photoinitiator system plays an important role in the polymerization process. Among these photoinitiators, polymeric [4], polymerizable [5,6,7,8,9,10,11,12] and one-component photoinitiators [13,14,15] have garnered much more attention in comparison to the conventional low molecular weight photoinitiators due to their low odor, non-yellowing, nontoxicity, low migration, and good compatibility with the formulation components [16,17].…”

Section: Introductionmentioning

confidence: 99%

Silicone-Thioxanthone: A Multifunctionalized Visible Light Photoinitiator with an Ability to Modify the Cured Polymers

Liao

Xiong

et al. 2019

Polymers

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A silicone-thioxanthone (STX) visible light photoinitiator was prepared by the nucleophilic substitution reaction of 2-[(4-hydroxybenzyl)-(methyl)-amino]-9H-thioxanthen-9-one (TX-HB) and γ-chloropropylmethylpolysiloxane-co-dimethyl-polysiloxane (PSO-Cl). Its structure was confirmed by 1H NMR, 13C NMR, FTIR, UV-vis and GPC. The photopolymerization kinetics of 1, 6-Hexanedioldiacrylate (HDDA) and trimethylolpropane triacrylate (TMPTA) initiated by STX confirmed that STX is an efficient photoinitiator. Its visible light photolysis experiment and the photopolymerization kinetics studies implied that a possible synergistic effect existed between two adjacent thioxanthone groups. Moreover, a higher migration stability was revealed in STX than 2-benzyl (methyl) amino-9H-thioxanthen-9-one (TX-B). STX could change the surface property of the cured film of polyurethane diacrylate prepolymer (PUA) from hydrophilic to hydrophobic, as well as change the thermal stability of the polymer network. Meanwhile, it could improve the resistance against water and acid. Thus, STX is an effective multifunctionalized photoinitiator.

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“…Also, Irgacure 2959 and Irgacure 819 have been used in biocompatible applications. A promising strategy to reduce photoinitiator migration is the use of oligomeric, polymeric, or polymerizable photoinitiators . Unfortunately, oligomeric and polymeric PIs usually lead to a significant increase of the resin viscosity, which subsequently reduces the photochemical performance of the investigated formulation.…”

Section: Introductionmentioning

confidence: 99%

Investigating Photocurable Thiol‐Yne Resins for Biomedical Materials

Oesterreicher

Möser

Edler

et al. 2017

Macro Materials & Eng

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This study deals with the investigation of photocurable thiol‐yne resins covering several important aspects for the production of medical devices by UV‐based manufacturing processes. In this context, the performance of different low‐toxic photoinitiators (PIs) and stabilizers are evaluated in thiol‐yne formulations based on di(but‐1‐yn‐4‐yl) carbonate and various multifunctional thiol monomers. Photodifferential scanning calorimetry measurements reveal that the conversion of all resin formulations is mostly independent on the type and concentration of the applied photoinitiator; however, significant differences in their curing speed are observed. It turns out that the migration of an alkyne derivatized photoinitiator is significantly reduced while providing almost similar photoactivity as its nonfunctionalized reference. Moreover, it is found that lauryl gallate and butylated hydroxytoluene lead to significant stabilization without affecting the overall photoreactivity. Notably, the thermomechanical properties of the investigated photopolymers are only slightly affected by water absorption. Using ester free thiols, water absorption can be reduced and hydrolytically stable polymers are realized. These results highlight the versatility of the present thiol‐yne system for the production of medical materials by photopolymerization.

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Photoinitiators with Functional Groups. Part I. Polymer Photoinitiators

Cited by 22 publications

References 14 publications

Naphthalimide based methacrylated photoinitiators in radical and cationic photopolymerization under visible light

Naphthalimide based methacrylated photoinitiators in radical and cationic photopolymerization under visible light

Silicone-Thioxanthone: A Multifunctionalized Visible Light Photoinitiator with an Ability to Modify the Cured Polymers

Investigating Photocurable Thiol‐Yne Resins for Biomedical Materials

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