Photopolymerization of acrylates by enzymatically synthesized PCL based macrophotoinitiator

Kaya, N. Ugur; Önen, Aysęn; Güvenilir, Yüksel

doi:10.3144/expresspolymlett.2017.46

Cited by 9 publications

(9 citation statements)

References 24 publications

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“…Irgacure-2959 was utilized as the nucleophilic initiator and N435 as the catalyst. 363 N435 exhibited better activity than NS 88011 (a commercial product also from CALB) in the production of aliphatic polyesters using globalide and ω-pentadecalactone as substrates, although the length of the polymer was smaller. 364 PolyĲε-caprolactone) has been synthesized via ring-opening polymerization of ε-caprolactone catalyzed by N435 in ionic liquids.…”

Section: Lewatit Vp Oc 1600mentioning

confidence: 97%

Novozym 435: the “perfect” lipase immobilized biocatalyst?

Ortíz

Ferreira

Barbosa

et al. 2019

Catal. Sci. Technol.

448

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Section: Lewatit Vp Oc 1600mentioning

confidence: 97%

Novozym 435: the “perfect” lipase immobilized biocatalyst?

Ortíz

Ferreira

Barbosa

et al. 2019

Catal. Sci. Technol.

448

360

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“…Recently, Acik et al [ 102 ] synthesized acrylates using natural sugar-based monomers. Furthermore, the enzymatic synthesis of photoinitiators have been reported [ 103 ]. This avenue of research is particularly important as it could reduce the dependence on non-renewable resources.…”

Section: Discussionmentioning

confidence: 99%

State of the Art in Dual-Curing Acrylate Systems

et al. 2018

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Acrylate chemistry has found widespread use in dual-curing systems over the years. Acrylates are cheap, easily handled and versatile monomers that can undergo facile chain-wise or step-wise polymerization reactions that are mostly of the "click" nature. Their dual-curing processes yield two distinct and temporally stable sets of material properties at each curing stage, thereby allowing process flexibility. The review begins with an introduction to acrylate-based click chemistries behind dual-curing systems and relevant reaction mechanisms. It then provides an overview of reaction combinations that can be encountered in these systems. It finishes with a survey of recent and breakthrough research in acrylate dual-curing materials for shape memory polymers, optical materials, photolithography, protective coatings, structured surface topologies, and holographic materials.

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“…The bands at 700 and 775 cm −1 [24] were used to monitor the evolution of vinyl sulfone double bonds, whereas the band at 810 cm −1 [27] was used to monitor acrylate double bonds disappearance. The peaks were normalized using the carbonyl ester band at 1720 cm −1 [28]. The conversion of double bonds is denoted as x and it is defined by Equation (4).…”

Section: Methodsmentioning

confidence: 99%

Acetoacetate Based Thermosets Prepared by Dual-Michael Addition Reactions

et al. 2019

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A novel set of dual-curable multiacetoacetate-multiacrylate-divinyl sulfone ternary materials with versatile and manipulable properties are presented. In contrast to common dual-curing systems, the first stage polymer herein consists of a densely crosslinked, high Tg network as a result of base-catalyzed multiacetoacetate-divinyl sulfone Michael addition. A more flexible secondary network forms after base-catalyzed Michael addition of remaining multiacetoacetate to multiacrylate. Curing is truly sequential as the rates of the two Michael additions are significantly different. Curing kinetics were analyzed using differential scanning calorimetry (DSC) and Fourier-transform infrared (FTIR). The materials at each curing stage were characterized using dynamic mechanical analysis (DMA) and SEM. Although some phase separation was observed in certain formulations, the incompatibilities were minimized when the molar percentage of the acetoacetate-divinyl sulfone polymer network was above 75%. Furthermore, the environmental scanning electron microscopy (ESEM) images of these materials show that the more flexible acetoacetate-acrylate phase is dispersed in the form of polymeric spheres within the rigid acetoacetate-divinyl sulfone matrix. This unique dual microstructure can potentially render these materials highly resilient in applications requiring densely crosslinked polymer architectures with enhanced toughness.

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Photopolymerization of acrylates by enzymatically synthesized PCL based macrophotoinitiator

Cited by 9 publications

References 24 publications

Novozym 435: the “perfect” lipase immobilized biocatalyst?

Novozym 435: the “perfect” lipase immobilized biocatalyst?

State of the Art in Dual-Curing Acrylate Systems

Acetoacetate Based Thermosets Prepared by Dual-Michael Addition Reactions

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