Influence of UV irradiation and two photon processing on the cinnamate monomers polymerization and formation of hybrid composites with nanosized ZnO

Buruiana, Emil C.; Jitaru, Florentina; Matei, A.; Dinescu, M.; Buruiană, Tinca

doi:10.1016/j.eurpolymj.2012.09.012

Cited by 10 publications

(2 citation statements)

References 43 publications

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“…10,15 Among the procedures employed to achieve hybrid nanocomposites, UV--curing methods proved to be useful in the production of coatings, dental materials, adhesives, stereolithography, etc. [17][18][19] The fast conversion of the liquid monomers in the absence of solvent led to a great variety of materials with tailored physicochemical and mechanical properties. The most suitable monomers are the (meth)acrylates, the reactivities of which depend on their chemical structure, the distance and flexibility between functional units, viscosity and hydrogen bonding.…”

Section: Introductionmentioning

confidence: 99%

Polymer-graphene composites by photocuring of a system containing benzophenone macromer

Jitaru¹,

Chibac²,

Epurescu

et al. 2016

JSCS

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Formulations incorporating benzophenone-oligodimethacrylate (BP-DMA) and graphene structures, i.e., graphene oxide (GO) and reduced graphene oxide (RGO), were exposed to UV-Vis irradiation or a femtosecond laser beam to achieve hybrid composites. All structures were characterized through various methods, including 1 H-NMR and FTIR spectroscopies, optical microscopy, TEM, ESEM/EDAX analysis and DSC/XRD techniques. The photopolymerization of BP-DMA in the monomer compositions with and without GO or RGO was investigated by photo-DSC and FTIR methods to determine the kinetic parameters of the polymerization. The photopolymerization experiments revealed a good photoreactivity of the monomers (degree of conversion: 65-77 %) after 1 min exposure to UV-Vis irradiation and the addition of graphene (up to 0.5 %), whereas the polymerization rate varied between 0.14 and 0.1 s-1. Moreover, two-photon photopolymerization of the formulations in the presence/absence of GO or RGO nanosheets (0.1 wt. %) generated 2D microstructures by the direct laser writing procedure. Furthermore, the morphology and the properties of composites materials were analyzed.

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Section: Introductionmentioning

confidence: 99%

Polymer-graphene composites by photocuring of a system containing benzophenone macromer

Jitaru¹,

Chibac²,

Epurescu

et al. 2016

JSCS

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“…Zinc oxide (ZnO) has been exploited as a promising material for optoelectronic devices operating in the blue‐to‐near‐UV spectral region . In addition to its wide‐bandgap (∼3.3 eV), high‐quality nanostructures can be readily obtained from ZnO, prompting use of this material for nanoscale optoelectronic devices . Recently, for instance, a decrease of the deep‐level emission and an increase of the near band‐edge emission, dominated by a surface exciton, has been shown when ZnO nanowires are embedded in polymers .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of zinc oxide nanowires/polymer composites by two‐photon polymerization

Fonseca

Corrêa

Paris

et al. 2013

J Polym Sci B Polym Phys

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We present an approach to fabricate ZnO nanowires/polymer composite into three-dimensional microstructures, based on two-photon polymerization direct laser writing, a fabrication method that allows submicrometric spatial resolution. The structural integrity of the structures was inferred by scanning electron microscopy, while the presence and distribution of ZnO nanowires was investigated by energy dispersive X-ray, Raman spectroscopy, and X-ray diffraction. The optical properties of the produced composite microstructures were verified by imaging the characteristic ZnO emission using a fluorescence microscope. Hence, such approach can be used to develop composite microstructures containing ZnO nanowires aiming at technological applications.

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Multiphoton Processing of Composite Materials and Functionalization of3DStructures

Schwarz

Grabill

Digaum

et al. 2016

Multiphoton Lithography

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Influence of UV irradiation and two photon processing on the cinnamate monomers polymerization and formation of hybrid composites with nanosized ZnO

Cited by 10 publications

References 43 publications

Polymer-graphene composites by photocuring of a system containing benzophenone macromer

Polymer-graphene composites by photocuring of a system containing benzophenone macromer

Fabrication of zinc oxide nanowires/polymer composites by two‐photon polymerization

Multiphoton Processing of Composite Materials and Functionalization of3DStructures

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