Fabrication and characterization of functionalized nano-silica based transparent superhydrophobic surface

Ullah, Nehar; Zafar, Mahnoor; Malik, Hizbullah; Zaman, Kamran; Raheej, Muhammad; Ali, Irshad; Younas, Mohammad; Molaei, Mohammad Jafar; Rezakazemi, Mashallah

doi:10.1016/j.matchemphys.2021.124694

Cited by 6 publications

(1 citation statement)

References 36 publications

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“…28 A humidity chamber (RHP 80, Huanrui Test Equipment Co., Ltd., China) was employed to measure the WA behavior of the PVA films at 25 °C under constant conditions of 30, 50, and 80% RH, respectively. An OCA 20 contact angle system (Data Physics, Germany) was used to measure the CA of the PVA films by injecting a 10 μL drop of deionized water onto the surfaces of the tested films and holding it for 5 s. 29 The WVTR of the films was determined according to ASTM E96. 30 The OTR of the PVA films was determined by using an N800 gas permeability tester (Standard International Packaging Equipment Co. Ltd., Guangzhou, China) according to the previously reported method.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Improvement of Hydrophobicity and Gas Permeability of the Polyvinyl Alcohol Film Utilizing Monoglyceride Coating and Diatomaceous Earth Filling and Its Application to Fresh-Cut Mango

Liu

et al. 2023

ACS Sustainable Chem. Eng.

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The widespread utilization of the polyvinyl alcohol (PVA) film is significantly hindered by two prominent limitations: water sensitivity and low gas permeability. In this work, a novel PVA film coated with monoglyceride (MG) and filled with diatomaceous earth (DS) was fabricated to address these issues. Scanning electron microscopy and 3D morphology revealed that the R a value improved from 3.72 to 7.21 μm. Also, the successful coating of MG was confirmed by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Pull-off adhesion tests proved that the film containing 0.5 g of MG exhibited the highest adhesive properties. The PVA/MG/DS film had the highest contact angle of 122.32°, the lowest water vapor permeability of 7.19 g/m2/day, and the lowest oxygen permeability of 55.35 (cm3 × cm × cm2 × s × Pa)−1. Moreover, this type of film exhibited higher light transmittance, better thermal stability, and greater mechanical properties than pure PVA film. Consequently, the PVA/MG/DS film displayed superior performance in preserving the freshness and quality of fresh-cut mango, with a lowest weight loss of 4.48%, a lowest total soluble solids of 7.98%, a greatest titratable acidity of 0.88%, a highest ascorbic acid of 76.67 mg/100 g, and best sensory quality.

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Section: ■ Materials and Methodsmentioning

confidence: 99%

Improvement of Hydrophobicity and Gas Permeability of the Polyvinyl Alcohol Film Utilizing Monoglyceride Coating and Diatomaceous Earth Filling and Its Application to Fresh-Cut Mango

Liu

et al. 2023

ACS Sustainable Chem. Eng.

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Hydrophobic and mechanical strength enhancement of hemp fabric and paper enabled by waterborne polyurethane-derived functional coating

Zhao,

Sui,

Zhang

et al. 2024

Cellulose

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Cellulosic-based materials such as hemp fabric and paper have combined characteristics of renewability, biodegradability, exibility, and recyclability. However, regular products are not suitable for use in unconventional applications due to inherent limitations, and accordingly, enabling new capabilities is a necessity. To this end, the conversion of regular hemp fabric and paper into high-strength product with hydrophobic function via surface engineering was explored. The uorinated waterborne polyurethane (FWPU) emulsions were rst synthesized as functional coatings by in-situ polymerization. The structure and properties of the FWPU emulsion and lm were characterized by FTIR, XRD, SEM TG, XPS. The results showed that the grafting of per uorooctanol imparts WPU lm excellent hydrophobicity, the water contact angle increases from 71.2º to 105.95º. After the FWPU coating, the water contact angle of the hemp fabric and paper increases from 0º to 117.10º and 112.77°, respectively. Quite encouragingly, the coating generation of waterborne polyurethane-derived functional additives led to the increase of mechanical strength by more than x and x times, in the case of qualitative lter paper and hemp fabric. Overall, this functionalized waterborne polyurethane coating would direct paper and hemp fabric toward diversi ed applications.

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Hybrid silicon dioxide–carbon nanotube superhydrophobic surfaces: Great wear resistance and excellent de-icing capability

Li,

Han,

Yang

et al. 2024

Chemical Engineering Journal

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Fabrication and characterization of functionalized nano-silica based transparent superhydrophobic surface

Cited by 6 publications

References 36 publications

Improvement of Hydrophobicity and Gas Permeability of the Polyvinyl Alcohol Film Utilizing Monoglyceride Coating and Diatomaceous Earth Filling and Its Application to Fresh-Cut Mango

Improvement of Hydrophobicity and Gas Permeability of the Polyvinyl Alcohol Film Utilizing Monoglyceride Coating and Diatomaceous Earth Filling and Its Application to Fresh-Cut Mango

Hydrophobic and mechanical strength enhancement of hemp fabric and paper enabled by waterborne polyurethane-derived functional coating

Hybrid silicon dioxide–carbon nanotube superhydrophobic surfaces: Great wear resistance and excellent de-icing capability

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