Effect of PAA-induced surface etching on the adhesion properties of ZnO nanostructured films

Meinderink, Dennis; Kielar, Charlotte; Sobol, Oded; Ruhm, Lukas; Rieker, Florian; Nolkemper, Karlo; Orive, Alejandro González; Özcan, Özlem

doi:10.1016/j.ijadhadh.2021.102812

Cited by 5 publications

(3 citation statements)

References 79 publications

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“…The zeta potential values of ZnO as-synthesized and ZnO precipitated after incubation with CIPRO were -1.8 and -3.2 mV, respectively. The changes in the zeta potential of ZnO exposed to CIPRO were consistent with the etching of Zn 2+ ions from the ZnO microstructure surfaces 49 . Considering that CIPRO interacted with ZnO and Cu-ZnO, promoting the etching of Zn 2+ by complexation with the ions rather than by binding to the nanocrystals, it was important to investigate the effects of these events on CIPRO photodegradation.…”

Section: Resultssupporting

confidence: 65%

Photodegradation of Ciprofloxacin-Zinc Complexes Produced at the Interface of ZnO and Cu-Doped ZnO Crystals

et al. 2021

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Ciprofloxacin hydrochloride (CIPRO) is considered an emerging pollutant in aquatic environments with the capacity to disseminate antibiotic resistance. Considering the pro-oxidant potential of ZnO and Cu-doped ZnO (Cu-ZnO) wurtzite crystals, the potential Ciprofloxacin photodegradation by these materials was investigated. CIPRO titration with ZnO and Cu-ZnO promoted the formation of zinc complexes and ~4% antibiotic adsorption. The carboxylic groups of CIPRO can complex Zn 2+ by promoting the nanoetching of ZnO and Cu-ZnO crystallite surfaces. The alkaline interfaces provided by ZnO create a microenvironment favorable for Zn 2+ chelation by CIPRO carboxylates. The photodegradation degree was similar for CIPRO and CIPRO-Zn under UV light, as revealed by UV-visible spectroscopy and FTIR. Therefore, the ZnO and Cu-ZnO crystals contributed to the formation of CIPRO-Zn rather than the photo-oxidative degradation of the antibiotic. Considering that CIPRO-Zn chelates disfavor bacterial selection for resistance, the treatment of CIPRO-contaminated effluents with ZnO and Cu-ZnO can facilitate desirable metal chelation without impairing photodegradation.

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Section: Resultssupporting

confidence: 65%

Photodegradation of Ciprofloxacin-Zinc Complexes Produced at the Interface of ZnO and Cu-Doped ZnO Crystals

et al. 2021

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“…The colorimetric appearance of the hydrogel changed with pH, and the absorption peak positions were correlated to the pH ranges. However, these studies [ 2 , 10 , 11 , 12 , 13 , 14 ] did not disclose the drainage capability of the dyes from the hydrogel matrix. This is an important aspect because the entrapment only occurred on the surface of the wound dressing, which causes dye leakage when they come in contact with excess exudates.…”

Section: Introductionmentioning

confidence: 99%

“…They demonstrated the adhesion capability on various materials, such as glass, metal, PTFE, and pigskin, with different concentrations of Ti 3 C 2 Tx and PAA, and it was found that increasing the concentration of PAA enhanced the adhesion strength significantly. Meinderink et al [ 13 ] modified the surface morphology of ZnO nanostructure films and dipped them in dilute and an aqueous solution of PAA. In addition, Zhang et al [ 14 ] examined the adhesion capability of PAA/NIPAAM-co-DMA hydrogels over a temperature range of 15–35 °C, reporting a shear strength of 550 kPa, 400 kPa, and 650 kPa at 15 °C, 25 °C, and 35 °C, respectively.…”

Section: Introductionmentioning

confidence: 99%

3D Printing of pH Indicator Auxetic Hydrogel Skin Wound Dressing

et al. 2023

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The benefits of enclosing pH sensors into wound dressings include treatment monitoring of wounded skin and early detection of developing chronic conditions, especially for diabetic patients. A 3D printed re-entrant auxetic hydrogel wound dressing, doped with pH indicator phenol red dye, was developed and characterized. The re-entrant auxetic design allows wound dressing adhesion to complex body parts, such as joints on arms and legs. Tensile tests revealed a yield strength of 140 kPa and Young’s modulus of 78 MPa. In addition, the 3D-printed hydrogel has a swelling capacity of up to 14%, limited weight loss to 3% in six days, and porosity of near 1.2%. A reasonable pH response resembling human skin pH (4–10) was obtained and characterized. The integration of color-changing pH indicators allows patients to monitor the wound’s healing process using a smartphone. In addition to the above, the mechanical properties and their dependence on post-processing were studied. The results show that the resin composition and the use of post-treatments significantly affect the quality and durability of the wound dressings. Finally, a poly (acrylic acid) (PAA) and water-based adhesive was developed and used to demonstrate the performance of the auxetic wound dressing when attached to moving body joints.

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Surface functionalization of CNTs with amine group and decoration of begonia-like ZnO for detection of antipyretic drug acetaminophen

Balram

Lian

Sebastian

et al. 2021

Applied Surface Science

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Effect of PAA-induced surface etching on the adhesion properties of ZnO nanostructured films

Cited by 5 publications

References 79 publications

Photodegradation of Ciprofloxacin-Zinc Complexes Produced at the Interface of ZnO and Cu-Doped ZnO Crystals

Photodegradation of Ciprofloxacin-Zinc Complexes Produced at the Interface of ZnO and Cu-Doped ZnO Crystals

3D Printing of pH Indicator Auxetic Hydrogel Skin Wound Dressing

Surface functionalization of CNTs with amine group and decoration of begonia-like ZnO for detection of antipyretic drug acetaminophen

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