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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of a water-dispersible nano-photoinitiator oriented towards 3D printing hydrogel with visible light
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Preparation of a water-dispersible nano-photoinitiator oriented towards 3D printing hydrogel with visible light

机译：Preparation of a water-dispersible nano-photoinitiator oriented towards 3D printing hydrogel with visible light

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摘要

In this article, a preparation method of a water-dispersible photoinitiator, which can be used for three-dimensional (3D) printing of the hydrogel and can be initiated under visible light is proposed. The oil-soluble photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO) is nano-wrapped with surfactant Tween 20 to obtain the oil-in-water (O/W) miniemulsion, and then it is successfully transformed into water-dispersible nanospheres without the use of organic solvents or crystallization inhibitors. The morphology and optical properties were characterized by transmission electron microscopy (TEM), particle size analysis and ultraviolet-visible (UV-Vis) spectroscopy. Subsequently, the water-dispersible nano-photoinitiator was used to realize the photopolymerization of acrylamide/N,N '-methylenebisacrylamide hydrogel under visible light (405 nm). Then, the micromorphology of the photocuring process of the hydrogel was observed by TEM and the photocuring activity of the initiator was evaluated. Finally, a viscosifier suitable for AM/MBA hydrogel system was screened out, and the direct ink writing (DIW) 3D printing of the hydrogel was successfully realized by using this nano-photoinitiator.

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