The CQ ratio of surface energy components influences adhesion and removal of fouling bacteria

Liu, Chen; Zhao, Qi

doi:10.1080/08927014.2011.563842

Cited by 59 publications

(65 citation statements)

References 33 publications

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“…A strong correlation was found between the total interaction energy of various bacteria in a biofilm and the CQ ratio. In addition, a strong correlation was identified between the CQ ratio and the number of adhering bacterial cells as well as the removal of bacterial cells [45]. In an additional study published in the same year, Liu & Zhao [43] once again found strong correlations between bacterial adhesion and the CQ ratio, this time on a Ni-P-TiO 2 -PTFE composite material.…”

Section: Surface Free Energymentioning

confidence: 57%

“…This suggests that the lower the electron donor component of surface energy, the lower the levels of adhesion. Liu & Zhao [45] proposed a simple expression to determine the adhesion strength of bacteria that they coined the CQ ratio. The CQ ratio is the apolar Lifshitz-van der Waal component of the solid's surface energy divided by the electron donor component ( ) [45].…”

Section: Surface Free Energymentioning

confidence: 99%

“…Liu & Zhao [45] proposed a simple expression to determine the adhesion strength of bacteria that they coined the CQ ratio. The CQ ratio is the apolar Lifshitz-van der Waal component of the solid's surface energy divided by the electron donor component ( ) [45]. A strong correlation was found between the total interaction energy of various bacteria in a biofilm and the CQ ratio.…”

Section: Surface Free Energymentioning

confidence: 99%

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Design of intelligent surfaces for energy intensive processing industry

2018

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Abstract.There are three different factors that can affect adhesion: the process fluid, the processing conditions and the surface of the processing equipment. Of these three factors, the surface properties of the processing equipment are the factor that offers the greatest opportunity for manipulation. The two key surface properties that have been identified to reduce adhesion are the surface energy and the surface topography. The surface energy of a material determines its degree of wettability and, a surface's affinity for water. In previous studies the surface energy of materials have been leveraged in order to create a surface with reduced levels of fouling through surface modification or the addition of polymer coatings with varying degrees of hydrophobicity. In addition, the topography of surfaces has been modified to reduce the level of particle adhesion. These modifications involve creating either a structured or random porous microstructure on the surface. Additional methods identified to reduce fouling include the application of liquid infused porous surfaces at low shear conditions and the use of non-contact heating through techniques such as microwave processing.

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Section: Surface Free Energymentioning

confidence: 57%

Section: Surface Free Energymentioning

confidence: 99%

Section: Surface Free Energymentioning

confidence: 99%

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Design of intelligent surfaces for energy intensive processing industry

2018

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“…From the total free energy results it is possible to observe that both surfaces are hydrophobic ( G  < 0 mJ m -2 ), although stainless steel is more hydrophobic. The ratio proposed by Liu and Zhao (2011) between the the Lifshitz van der Waals apolar component and the electron donor component (…”

Section: Resultsmentioning

confidence: 99%

“…The ratio proposed by Liu and Zhao (2011) between the the Lifshitz van der Waals apolar component and the electron donor component (…”

Section: Surface Properties Determinationmentioning

confidence: 99%

Evaluation of SICON ® surfaces for biofouling mitigation in critical process areas

Moreira

Fulgêncio

Oliveira

et al. 2016

Food and Bioproducts Processing

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In industrial processes, particularly in the food sector, sustainability is increasingly important.Consumers demand safer food and this is often associated with elevated cleaning costs and high environmental impacts in order to reduce contaminations on equipment and products.Modified surfaces are seen as a promising strategy for biofouling mitigation and contamination prevention. In this work, the performance of a modified Diamond-Like Carbon (DLC) surface designated by SICON ® (a-C:H:Si:O) was compared with stainless steel (316L) regarding bacterial adhesion, biofilm formation and cleanability. Assays were performed at different temperatures using Escherichia coli, one of the most persistent foodborne microorganisms and also the natural flora present in the water from an industrial salad washing line. Bacterial adhesion on SICON ® and stainless steel were similar and favored at a higher temperature (30 ºC). Biofilm formation was reduced on SICON ® (1-2 Log) and this may be explained by the lower ratio between the Lifshitz van der Waals apolar component and the electron donor component () of this surface. It was also shown that after performing a cleaning treatment with chlorine, reduction of viability counts was much higher in SICON ® (about 3.5 Log reduction and 15% removal) when compared to stainless steel (1.6 Log reduction and 6% removal). Additionally, it was observed that 18 h after treatment, biofilm values in SICON ® were similar to those obtained with stainless steel.Results indicate that for industries with cleaning frequencies of up to 6 h, the use of SICON ® on critical areas enables operation at a much higher hygienic level.

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Marine Anti‐fouling Coatings

2018

Polymer Coatings

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The CQ ratio of surface energy components influences adhesion and removal of fouling bacteria

Cited by 59 publications

References 33 publications

Design of intelligent surfaces for energy intensive processing industry

Design of intelligent surfaces for energy intensive processing industry

Evaluation of SICON ® surfaces for biofouling mitigation in critical process areas

Marine Anti‐fouling Coatings

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