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Water?Borne ZnO/Acrylic Nanocoating: Fabrication, Characterization, and Properties.

ABSTRACT: This work aims to explore how ZnO nanoparticles enhance the mechanical, photoaging, and self?cleaning properties of water?borne acrylic coating. Micro/nano?ZnO particles (at 2 wt.% of total solid resin) were dispersed into the acrylic polymer matrices using ultrasonication to understand the effect of the size of the coating properties. The effect of ZnO particles on the properties of composite coatings (25 µm of thick) have been evaluated through various tests, such as abrasion measurement, ultraviolet/condensation (UV/CON) weathering aging, and methylene blue self?cleaning. Experimental data indicated that the incorporation of ZnO particles enhanced both abrasion resistance and methylene blue removal efficiency of the water?borne acrylic coatings, with nano?ZnO particles being the best. However, the weathering degradation of nanocomposite coatings was more severe as compared to the coating with micro?ZnO (at the same ZnO content).

SUBMITTER: Vu TV

PROVIDER: S-EPMC7956375 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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Water‑Borne ZnO/Acrylic Nanocoating: Fabrication, Characterization, and Properties.

Vu Tien Viet TV Nguyen Thien Vuong TV Tabish Mohammad M Ibrahim Sehrish S Hoang Thi Huong Thuy THT Gupta Ram K RK Dang Thi My Linh TML Nguyen Tuan Anh TA Yasin Ghulam G

Polymers 20210226 5

This work aims to explore how ZnO nanoparticles enhance the mechanical, photoaging, and self‑cleaning properties of water‑borne acrylic coating. Micro/nano‑ZnO particles (at 2 wt.% of total solid resin) were dispersed into the acrylic polymer matrices using ultrasonication to understand the effect of the size of the coating properties. The effect of ZnO particles on the properties of composite coatings (25 µm of thick) have been evaluated through various tests, such as abrasion measurement, ultr ...[more]

PMID: 33652874

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Project description:Recently, the conjugation of metal oxide nanoparticles with organic moieties has attracted the attention of many researchers for various applications. In this research, the green and biodegradable vitamin C was employed in a facile and inexpensive procedure to synthesize the vitamin C adduct (3), which was then blended with green ZnONPs to fabricate a new composite category (ZnONPs@vitamin C adduct). The morphology and structural composition of the prepared ZnONPs and their composites were confirmed by several techniques: Fourier-transform infrared (FT-IR) spectroscopy, field-emission scanning electron microscopy (FE-SEM), UV-vis differential reflectance spectroscopy (DRS), energy dispersive X-ray (EDX) analysis, elemental mapping, X-ray diffraction (XRD) analysis, photoluminescence (PL) spectroscopy, and zeta potential measurements. The structural composition and conjugation strategies between the ZnONPs and vitamin C adduct were revealed by FT-IR spectroscopy. The experimental results for the ZnONPs showed that they possessed a nanocrystalline wurtzite structure with quasi-spherical particles with a polydisperse size ranging from 23 to 50 nm, while the particle size appeared greater in the FE-SEM images (band gap energy of 3.22 eV); after loading with the l-ascorbic acid adduct (3), the band gap energy dropped to 3.06 eV. Later, under solar light irradiation, the photocatalytic activities of both the synthesized ZnONPs@vitamin C adduct (4) and ZnONPs, including the stability, regeneration and reusability, catalyst amount, initial dye concentration, pH effect, and light source studies, were investigated in detail in the degradation of Congo red dye (CR). Furthermore, an extensive comparison between the fabricated ZnONPs, composite (4), and ZnONPs from previous studies was performed to gain insights to commercialize the catalyst (4). Under optimum conditions, the photodegradation of CR after 180 min was 54% for ZnONPs and 95% for the ZnONPs@l-ascorbic acid adduct. Moreover, the PL study confirmed the photocatalytic enhancement of the ZnONPs. The photocatalytic degradation fate was determined by LC-MS spectrometry.

Dataset Information

Water?Borne ZnO/Acrylic Nanocoating: Fabrication, Characterization, and Properties.

Publications

Water‑Borne ZnO/Acrylic Nanocoating: Fabrication, Characterization, and Properties.

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