Photopolymerization kinetics of methyl methacrylate with reactive and inert nanogels

D’Ovidio, Tyler; Roberts, R.; Gautam, Dixa; Marks, Zefram D.; Saraswathy, Manju; Stansbury, Jeffrey W.; Nair, Devatha P.

doi:10.1016/j.jmbbm.2018.06.003

Cited by 12 publications

(5 citation statements)

References 25 publications

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“…Poly(methyl methacrylate) (PMMA) is one of the most widely used thermoplastic materials because of its excellent mechanical properties, outstanding biocompatibility, and relatively easy process . PMMA has been broadly applied as a biomaterial, including bone cements and dental materials. , However, the slow polymerization kinetics involving the conversion of MMA to PMMA at ambient temperature is a major disadvantage for in situ polymerizations .…”

Section: Resultsmentioning

confidence: 99%

Naphthalimide Aryl Sulfide Derivative Norrish Type I Photoinitiators with Excellent Stability to Sunlight under Near-UV LED

Gao

Jiang

et al. 2019

Macromolecules

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A series of Norrish type I photoinitiators (NASs), which are naphthalimide aryl sulfide derivatives, are prepared. The potential mechanism involved in the photolysis of NASs under UV LED at 405 nm is investigated by steady-state photolysis, nuclear magnetic resonance, electron spin resonance, fluorescence spectroscopy, cyclic voltammetry, and laser flash photolysis and by calculating the bond dissociation energies of the C–S bonds of NASs. The as-prepared photoinitiators NAS5 and NAS6 can efficiently initiate free radical photopolymerization of (methyl)acrylate monomers under UV LED exposure at 405 nm. NASs/iodonium salt systems can initiate the cationic photopolymerization of epoxide. Interestingly, NASs exhibit an excellent stability to sunlight. Thus, the use of NASs makes the preparation, storage, and application of photocurable formulations convenient.

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Section: Resultsmentioning

confidence: 99%

Naphthalimide Aryl Sulfide Derivative Norrish Type I Photoinitiators with Excellent Stability to Sunlight under Near-UV LED

Gao

Jiang

et al. 2019

Macromolecules

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“…The family of these initiators includes benzyl ketals, α-hydroxyketone, α-aminoketone, and phenylglyoxylate, that contains chromophoric groups that absorb radiation in the UV or visible range . Irgacure 2959 (0.1 wt %) was used for the photopolymerization of PEG dimethacrylate (PEGDMA), IR819 for the conversion of methyl methacrylate (MMA) to PMMA, and benzophenone for the photopolymerization of PEG methyl ether methacrylate (PEGMA), while an aromatic hydroxyketone (Darocur 4265) was found to be highly efficient for acrylates and unsaturated polyesters. Photoinduced grafting reaction of PEGMA onto styrenic copolymers was made by several authors in order to impart hydrophilicity, improved biocompatibility, resistance to nonspecific protein adsorption, or cell adhesion to the substrate. , …”

Section: Photoinitiatorsmentioning

confidence: 99%

Photopolymerization of Bio-Based Polymers in a Biomedical Engineering Perspective

Chiulan

Heggset²,

Voicu

et al. 2021

Biomacromolecules

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Photopolymerization is an effective method to covalently cross-link polymer chains that can be shaped into several biomedical products and devices. Additionally, polymerization reaction may induce a fluid–solid phase transformation under physiological conditions and is ideal for in vivo cross-linking of injectable polymers. The photoinitiator is a key ingredient able to absorb the energy at a specific light wavelength and create radicals that convert the liquid monomer solution into polymers. The combination of photopolymerizable polymers, containing appropriate photoinitiators, and effective curing based on dedicated light sources offers the possibility to implement photopolymerization technology in 3D bioprinting systems. Hence, cell-laden structures with high cell viability and proliferation, high accuracy in production, and good control of scaffold geometry can be biofabricated. In this review, we provide an overview of photopolymerization technology, focusing our efforts on natural polymers, the chemistry involved, and their combination with appropriate photoinitiators to be used within 3D bioprinting and manufacturing of biomedical devices. The reviewed articles showed the impact of different factors that influence the success of the photopolymerization process and the final properties of the cross-linked materials.

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“…These include bisphenolglycidyl methacrylate (Bis-GMA), urethane dimethacrylate (UDMA), and triethylene glycol dimethacrylate (TEGDMA) comonomer. In addition, novel formulations such as aromatic urethane dimethacrylate (AUDMA) and ethoxylated bisphenol-A dimethacrylate (Bis-EMA) are used in new RC products [19][20][21].…”

Section: Composition Of Resin Compositesmentioning

confidence: 99%

Utilizing Light Cure Units: A Concise Narrative Review

Hasanain

Nassar

2021

Polymers

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The use of photo-curable resin composite restorations is an essential treatment modality in modern dental practice. The success and longevity of these restorations depend on achieving predictable and effective polymerization. Understanding the dynamics of the polymerization and the effect of light cure units (LCUs) on this process is paramount. The goal of this concise narrative review is to provide a simplified presentation of basic principles of composite chemistry, polymerization reactions, and photo-curing with relevant terminologies. Clinical guidelines for choosing and maintaining LCUs, as well as safety precautions and factors under the control of the clinician are listed. Finally, clinical recommendations of LCUs’ usage and monitoring are included to aid practitioners in achieving predictable polymerization during the placement of direct resin composite restorations.

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Photopolymerization kinetics of methyl methacrylate with reactive and inert nanogels

Cited by 12 publications

References 25 publications

Naphthalimide Aryl Sulfide Derivative Norrish Type I Photoinitiators with Excellent Stability to Sunlight under Near-UV LED

Naphthalimide Aryl Sulfide Derivative Norrish Type I Photoinitiators with Excellent Stability to Sunlight under Near-UV LED

Photopolymerization of Bio-Based Polymers in a Biomedical Engineering Perspective

Utilizing Light Cure Units: A Concise Narrative Review

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