Curcumin, A Novel Natural Photoinitiator for the Copolymerization of Styrene and Methylmethacrylate

Mishra, Anuradha; Daswal, Swati

doi:10.1080/10601320500246974

Cited by 27 publications

(15 citation statements)

References 16 publications

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“…One of the efficient approaches to overcome these drawbacks is to incorporate functional groups with a H‐donating nature into the PI backbone, allowing the design of one‐component hydrogen‐abstraction PIs that can initiate the photopolymerization without any co‐initiator . A series of benzophenone derivatives and thioxanthone derivatives, have been reported as efficient one‐component hydrogen‐abstraction PIs for FRP. It is still of great interest to continue such an exploration to solve the existing problems (e. g. most of these PIs only work under UV light and are used only for FRP) and enhance the photoinitiation efficiency.…”

Section: Introductionmentioning

confidence: 99%

Naphthalimide‐Tertiary Amine Derivatives as Blue‐Light‐Sensitive Photoinitiators

et al. 2018

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The photochemical mechanism of the radical generation from photoinitiating systems based on 1, 8‐naphthalimide derivatives (ANDs; with tertiary amine moieties) are investigated by using various approaches including cyclic voltammetry, steady‐state photolysis, and electron spin resonance spin‐trapping techniques. It reveals that radicals can be produced from ANDs alone or ANDs/additive (e. g. iodonium salt or chloro triazine) combinations. The generated radicals and cations can initiate both free‐radical and cationic photopolymerization reactions under irradiation with various light‐emitting diodes or a halogen lamp. For most of the AND‐based photoinitiating systems, more than 60 % of acrylate or epoxide conversions were attained, and were even higher than those obtained by using commercial photoinitiators, for example, bisacylphosphine oxide or camphorquinone. More interestingly, the AND1‐based photoinitiating system can also initiate concomitant cationic/radical polymerizations and can be used for the synthesis of interpenetrated polymer networks.

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Section: Introductionmentioning

confidence: 99%

Naphthalimide‐Tertiary Amine Derivatives as Blue‐Light‐Sensitive Photoinitiators

et al. 2018

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“…Some common photoinitiators are benzophenone [38], anthraquinone [37], thioxantone [37], and phenyl azide [39]. Polymeric photoinitiators have also been studied [37], as well as naturally derived photoinitiators like curcumin [40,41]. Photografting can be used to prepare active packaging coatings either by direct incorporation of the active agent during photografting, or by subsequent immobilization of the active compound after grafting of a polymer chain with reactive functional groups (e.g., acrylic acid).…”

Section: Photograftingmentioning

confidence: 99%

Active Packaging Coatings

et al. 2015

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Active food packaging involves the packaging of foods with materials that provide an enhanced functionality, such as antimicrobial, antioxidant or biocatalytic functions. This can be achieved through the incorporation of active compounds into the matrix of the commonly used packaging materials, or by the application of coatings with the corresponding functionality through surface modification. The latter option offers the advantage of preserving the packaging materials' bulk properties nearly intact. Herein, different coating technologies like embedding for controlled release, immobilization, layer-by-layer deposition, and photografting are explained and their potential application for active food packaging is explored and discussed.

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“…3. This mechanism incorporates toxic tertiary amine into the polymers' structures [2,[4][5][6][7]19]. The radical left on the structure can then cleave another double bond, further propagating the polymerization reaction (Fig.…”

Section: Photopolymerizationmentioning

confidence: 99%

“…Furthermore, the type II PIS of dye/amine has been widely acknowledged as an effective polymerization route [2]. As the area of polymer chemistry expands, it becomes necessary to search for novel and more efficient monomeric mixtures, and initiating systems [6].…”

Section: Introductionmentioning

confidence: 99%

Use of curcumin and glycerol as an effective photoinitiating system in the polymerization of urethane dimethacrylate

Oliveira

Alarcon

et al. 2017

J Therm Anal Calorim

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The objectives of this study were to verify the viability of the photoinitiating system using curcumin as a photoinitiator and glycerol as a coinitiator, to analyze the thermal and morphological features of the polymers produced, and finally evaluate the possibility of removing toxic Ethyl-p-dimethylaminobenzoate from the photoinitiating system. Curcumin, an orange-yellow dye extracted from the rhizoids of the plant Curcuma longa, is known to be a common photosensitizer, and the type II photoinitiating system consisting of a dye and an amine is long known to be effective. In recent years, the production of biodiesel has increased, and consequently, so has the generation of its main by-product, glycerol. Thus, it becomes necessary to study ways to incorporate glycerol into products. Using thermoanalytical methods (Thermogravimetry, Differential Thermal Analysis, and Differential Scanning Calorimetry), Middle Infrared Spectroscopy, and Scanning Electronic Microscopy, it was possible to assess the thermal and morphological characteristics of the polymers produced, and compare whether the presence or lack of tertiary amine, as well as the addition of different molar ratios of glycerol, had any significant impact on these characteristics. Results suggested that neither the removal of tertiary amine nor the addition (in different proportions) of glycerol affected the thermal stability of the polymers. Also, removing the tertiary amine enhanced the total conversion degree of the polymers.

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Curcumin, A Novel Natural Photoinitiator for the Copolymerization of Styrene and Methylmethacrylate

Cited by 27 publications

References 16 publications

Naphthalimide‐Tertiary Amine Derivatives as Blue‐Light‐Sensitive Photoinitiators

Naphthalimide‐Tertiary Amine Derivatives as Blue‐Light‐Sensitive Photoinitiators

Active Packaging Coatings

Use of curcumin and glycerol as an effective photoinitiating system in the polymerization of urethane dimethacrylate

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