Flow, curing and mechanical properties of thermoset resins – wood-fiber blends for potential additive-manufacturing applications

Orji, Berlinda O.; McDonald, Armando G.

doi:10.1080/17480272.2022.2155873

Cited by 1 publication

(2 citation statements)

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“…Besides, s-ZnO/PDA@TCN and s-ZnO/PDA@DOX exhibited similar absorption peaks at 474.6 and 477.1 cm –1 , respectively, indicating no structural changes in the s-ZnO nanostructure. The peaks located at 1486 cm –1 were ascribed to the aromatic C–H stretching vibration in ZnO/PDA@TCN and s-ZnO/PDA@DOX and were absent in bulk s-ZnO . Furthermore, the absorption peaks at approximately 1590 and 1576 cm –1 were attributed to the CN stretching vibrations of PDA in ZnO/PDA@TCN and s-ZnO/PDA@DOX.…”

Section: Resultsmentioning

confidence: 98%

“…The peaks located at 1486 cm −1 were ascribed to the aromatic C−H stretching vibration in ZnO/ PDA@TCN and s-ZnO/PDA@DOX and were absent in bulk s-ZnO. 33 Furthermore, the absorption peaks at approximately 1590 and 1576 cm −1 were attributed to the C�N stretching vibrations of PDA in ZnO/PDA@TCN and s-ZnO/PDA@ DOX. Notably, the peak at around 1303 cm −1 was associated with the C−O stretching and bending vibrations of TCN, indicating the successful binding of TCN onto the s-ZnO/PDA surface.…”

Section: Characterization Of the S-zno And R-znomentioning

confidence: 99%

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Sunflower Pollen-Morphology Mimicked Spiky Zinc Nanomotors as a Photosensitizer for Killing Bacteria and Cancer Cells

Dutta,

Luthfikasari,

Patil

et al. 2024

ACS Appl. Bio Mater.

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Photosensitizing agents have received increased attention from the medical community, owing to their higher photothermal efficiency, induction of hyperthermia, and sustained delivery of bioactive molecules to their targets. Micro/nanorobots can be used as ideal photosensitizing agents by utilizing various physical stimuli for the targeted killing of pathogens (e.g., bacteria) and cancer cells. Herein, we report sunflower-pollen-inspired spiky zinc oxide (s-ZnO)-based nanorobots that effectively kill bacteria and cancer cells under near-infrared (NIR) light irradiation. The as-fabricated s-ZnO was modified with a catechol-containing photothermal agent, polydopamine (PDA), to improve its NIR-responsive properties, followed by the addition of antimicrobial (e.g., tetracycline/TCN) and anticancer (e.g., doxorubicin/ DOX) drugs. The fabricated s-ZnO/PDA@Drug nanobots exhibited unique locomotory behavior with an average speed ranging from 13 to 14 μm/s under 2.0 W/cm 2 NIR light irradiation. Moreover, the s-ZnO/PDA@TCN nanobots exhibited superior antibacterial activity against E. coli and S. epidermidis under NIR irradiation. The s-ZnO/PDA@DOX nanobots also displayed sufficient reactive oxygen species (ROS) amplification in B16F10 melanoma cells and induced apoptosis under NIR light, indicating their therapeutic efficacy. We hope the sunflower pollen-inspired s-ZnO nanorobots have tremendous potential in biomedical engineering from the phototherapy perspective, with the hope to reduce pathogen infections.

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Section: Resultsmentioning

confidence: 98%

Section: Characterization Of the S-zno And R-znomentioning

confidence: 99%