Light‐induced cure of epoxy resins. Use of a manganese carbonyl as photosensitizer

Anderson, W. S.

doi:10.1002/app.1971.070150824

Cited by 13 publications

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“…combination of anhydride or mercaptane with manganese carbonyls upon UV exposure has also been used as a catalyst for epoxy resins via the nucleophilic addition mechanism. 73 In a recent example, a ternary photoinitiating system consisting of an alkyl halide, Mn 2 (CO) 10 and an onium salt was used for the cationic polymerization of cyclic ethers, vinyl ethers and bisepoxides. 74 Control experiments omitting any of these three components in the reaction failed to produce polymers, which served as a direct verification of the mechanism.…”

Section: Cationic Polymerizationmentioning

confidence: 99%

“…The function of the Mn 2 (CO) 10 is not well understood and therefore the mechanism is still unclear. The combination of anhydride or mercaptane with manganese carbonyls upon UV exposure has also been used as a catalyst for epoxy resins via the nucleophilic addition mechanism . In a recent example, a ternary photoinitiating system consisting of an alkyl halide, Mn 2 (CO) 10 and an onium salt was used for the cationic polymerization of cyclic ethers, vinyl ethers and bisepoxides .…”

Section: Photoinitiating Systemsmentioning

confidence: 99%

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Macromolecular design and application using Mn₂(CO)₁₀‐based visible light photoinitiating systems

Çiftçi

Taşdelen

Yaǧcı

2016

Polymer International

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The environmentally friendly Mn 2 (CO) 10 -based visible light photoinitiating system is a powerful method for the preparation of linear and crosslinked polymeric structures. From a practical point of view, the most important feature of this initiating system is its optical characteristics in the visible range with high quantum yield and good solubility properties. This photoinitiating system is applicable for a variety of monomers that can be polymerized via either radical or cationic mechanisms. Various complex macromolecular structures such as telechelic polymers, block and graft copolymers, polymer networks and surface modifications can be simply prepared by using halogenated precursors. This photoinitiating system is also combined with controlled radical polymerization techniques providing a mild and efficient method for polymer synthesis.

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Section: Cationic Polymerizationmentioning

confidence: 99%

Section: Photoinitiating Systemsmentioning

confidence: 99%

Macromolecular design and application using Mn₂(CO)₁₀‐based visible light photoinitiating systems

Çiftçi

Taşdelen

Yaǧcı

2016

Polymer International

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Photopolymerization, Cationic

Sipani¹,

Scranton²

2004

Encyclopedia of Polymer Science and Technology

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Photopolymerizations are chain reactions in which propagating active centers (free radicals or cations) are produced by a photochemical event. The use of light, rather than heat, to initiate the polymerization offers several advantages, including spatial and temporal control, energy efficiency, and high polymerization rates. In addition, cationic photopolymerizations offer advantages over their free‐radical counterparts since they are not inhibited by oxygen and may continue to react long after the illumination has ceased. This article provides an overview of the important aspects of cationic photopolymerizations, including initiators, monomers, and polymerization kinetics. Commonly used photoinitiator systems for ultraviolet or visible light have been described, and the reaction mechanisms have been explored. The photoinitiation step is especially important because it is the step that distinguishes these reactions from their thermally initiated counterparts. A description of traditional cationically polymerizable monomers as well as recently developed, highly reactive monomers is also provided. Finally, representative kinetic rate expressions have been presented to illustrate the link between the reaction mechanism and the polymerization rate, and to identify the important variables that affect the polymerization. This article provides a valuable resource for any scientist or engineer who is considering cationic photopolymerizations for a study or an application.

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Photopolymerization, Cationic

Allonas

2019

Encyclopedia of Polymer Science and Technology

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This paper reviews the main principles of cationic photopolymerization. Photoinitiators and monomers reactivity is discussed with special focus paid to iodonium salts as photoinitiators and epoxides, oxetanes, and vinylethers as monomers. The effect of water or alcohol on the structure of the polymer network and the reactivity is depicted. The so‐called kick‐starting effect of mixtures of epoxides, oxetane, and vinyl ether is described. Finally, the emerging process of photoinduced cationic frontal polymerization for the curing of thick samples is introduced.

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Light‐induced cure of epoxy resins. Use of a manganese carbonyl as photosensitizer

Cited by 13 publications

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Macromolecular design and application using Mn₂(CO)₁₀‐based visible light photoinitiating systems

Macromolecular design and application using Mn₂(CO)₁₀‐based visible light photoinitiating systems

Photopolymerization, Cationic

Photopolymerization, Cationic

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Light‐induced cure of epoxy resins. Use of a manganese carbonyl as photosensitizer

Cited by 13 publications

References 0 publications

Macromolecular design and application using Mn2(CO)10‐based visible light photoinitiating systems

Macromolecular design and application using Mn2(CO)10‐based visible light photoinitiating systems

Photopolymerization, Cationic

Photopolymerization, Cationic

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Macromolecular design and application using Mn₂(CO)₁₀‐based visible light photoinitiating systems

Macromolecular design and application using Mn₂(CO)₁₀‐based visible light photoinitiating systems