4.6 Article

Rapid and continuous fabrication of TiO2 nanoparticles encapsulated by polyimide fine particles using a multistep flow-system and their application

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RSC ADVANCES
卷 11, 期 4, 页码 2083-2087

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ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ra09810h

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PI fine particles encapsulating a large number of TiO2 nanoparticles were successfully fabricated using the emulsion re-precipitation method in a multistep flow synthetic system. The fabricated material had a spherical structure with TiO2 nanoparticles disproportionately embedded near the surface, showing high UV shielding efficiency according to UV-vis transmission spectra.
PI fine particles encapsulating a large number of TiO2 nanoparticles (PI FPs/TiO2 NPs) were successfully fabricated rapidly and continuously by the emulsion re-precipitation method using a multistep flow synthetic system. The fabricated material, PI FPs/TiO2 NPs, was spherical in structure with a diameter of 214 nm, and the mean size of TiO2 NPs was 5.2 nm. Line scan elemental analysis with SEM-EDX showed that the TiO2 NPs were disproportionately embedded near the surface of the PI FPs. UV-vis transmission spectra revealed high UV shielding efficiency of the PI FPs/TiO2 NPs as the NPs are located near the surface.

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