Polyhexamethylene guanidine molybdate as an efficient antibacterial filler in epoxy coating for inhibiting sulfate reducing bacteria biofilm

Zhang, Tiansui; Wan, Huihai; Xu, Zixuan; Zhang, Yizhe; Dai, Jing; Liu, Hongfang

doi:10.1016/j.porgcoat.2022.107401

Cited by 8 publications

(3 citation statements)

References 51 publications

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“…The antibacterial activity of the GO, GOD, MMT, and MMTD nanostructures was tested against Staphylococcus aureus bacterial strains, and the results suggest a significant decrease of CFU on the coatings. A 2 magnitude order lower CFU for MMT demonstrated that it can act as a biocide, without additional expensive and toxic antimicrobial agents such as fluoride and polyhexamethylene guanidine molybdate and metal nanoparticles such as copper or silver …”

Section: Results and Discussionmentioning

confidence: 99%

Combined Thermomechanical Effect of Graphene Oxide and Montmorillonite on Biobased Epoxy Network Formation for Coatings

Necolau,

Bălănucă,

Frone

et al. 2024

ACS Omega

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Epoxy nanocomposites derived from linseed oil, reinforced with graphene oxide (GO) and montmorillonite (MMT) nanostructures, were synthesized. The nanohybrids were developed by enriching the structure of MMT and GO with primary amines through a common and simplified method, which implies physical interactions promoted by ultrasonic processing energy. The influence of the new nanoreinforcing agents along with neat ones on the overall properties of the biobased epoxy materials for coating applications was assessed. Interface formation through surface compatibility was contained by the lower values of activation energy calculated from differential scanning calorimetry (DSC) curves, along with a consistent 70% increase in the cross-linking density when aminemodified MMT was used. Thermomechanical characteristics of the biobased epoxy nanocomposites were explained through the interaction of the functional groups over the curing process of epoxidized linseed oil (ELO), giving a 15 °C higher T g value increase. Furthermore, the low surface energy values suggested an intrinsic antibacterial activity, as proved by a significant decrease of CFU against Staphylococcus aureus bacterial strains on the 0.25% reinforced coatings.

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Section: Results and Discussionmentioning

confidence: 99%

Combined Thermomechanical Effect of Graphene Oxide and Montmorillonite on Biobased Epoxy Network Formation for Coatings

Necolau,

Bălănucă,

Frone

et al. 2024

ACS Omega

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“…Alternatively, the diameter of the Nyquist plots gradually decreased at 25 and 30 days of immersion times. It is worth mentioning that the Nyquist plot diameter amplified as a result of the biofilm-corrosion formation which offers more metal protection, while the diminishing behavior, indicated the presence of a permeable or discontinuous coating which stimulates the disintegration of the SRB-biofilm and the protective passive layer 61 . Inspection of Tables 1 and 2 , it was noted that both media have good conductivity due to the solution resistance (Rs) being overly low and changing slightly with disclosure time, where the values of the Rs were significantly smaller in the enriched SRB-medium than in the sterile medium after 5 days of immersion as a consequence of the producing of bacterial solubilized metabolites such as pyruvic acid 62 .…”

Section: Resultsmentioning

confidence: 99%

Detectable quorum signaling molecule via PANI-metal oxides nanocomposites sensors

Gado,

Al-Gamal,

Badawy

et al. 2024

Sci Rep

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The detection of N-hexanoyl-l-homoserine lactone (C6-HSL), a crucial signal in Gram-negative bacterial communication, is essential for addressing microbiologically influenced corrosion (MIC) induced by sulfate-reducing bacteria (SRB) in oil and gas industries. Metal oxides (MOx) intercalated into conducting polymers (CPs) offer a promising sensing approach due to their effective detection of biological molecules such as C6-HSL. In this study, we synthesized and characterized two MOx/polyaniline-dodecyl benzene sulfonic acid (PANI-DBSA) nanocomposites, namely ZnO/PANI-DBSA and Fe2O3/PANI-DBSA. These nanocomposites were applied with 1% by-weight carbon paste over a carbon working electrode (WE) for qualitative and quantitative detection of C6-HSL through electrochemical analysis. The electrochemical impedance spectroscopy (EIS) confirmed the composites’ capability to monitor C6-HSL produced by SRB-biofilm, with detection limits of 624 ppm for ZnO/PANI-DBSA and 441 ppm for Fe2O3/PANI-DBSA. Furthermore, calorimetric measurements validated the presence of SRB-biofilm, supporting the EIS analysis. The utilization of these MOx/CP nanocomposites offers a practical approach for detecting C6-HSL and monitoring SRB-biofilm formation, aiding in MIC management in oil and gas wells. The ZnO/PANI-DBSA-based sensor exhibited higher sensitivity towards C6-HSL compared to Fe2O3/PANI-DBSA, indicating its potential for enhanced detection capabilities in this context. Stability tests revealed ZnO/PANI-DBSA's superior stability over Fe2O3/PANI-DBSA, with both sensors retaining approximately 85–90% of their initial current after 1 month, demonstrating remarkable reproducibility and durability.

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“…To solve the MIC trouble of pipelines used in oil/gas exploitation and transportation, various mitigation countermeasures such as physical and chemical approach, 7) protective coatings, 8,9) biological competition, 10,11) and antibacterial steel pipe have been developed. [12][13][14][15][16][17][18][19][20][21][22] Among them, antibacterial steel pipe is a new strategy to mitigate MIC from the aspect of material itself, having the characteristics of long-term durability.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nano-sized Cu-Rich Phase on Microbiological Corrosion Behavior of Cu and Ni-Added Steel for Oil Country Tubular Goods

Shi,

Zeng,

Ren

et al. 2024

ISIJ Int.

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The Cu-bearing antibacterial low-alloyed steel pipe is a new strategy to mitigate microbiologically influenced corrosion (MIC) for oil and gas industry. It can effectively alleviate the occurrence of bacterial corrosion, but cannot avoid the MIC totally. To enhance the resistance to MIC of Cu-bearing low-alloyed steel, the MIC behavior of a Cu and Ni-added experimental steel with different nano-sized Cu-rich precipitates was investigated. Results showed that the synergistic effect of antibacterial ability of nano-sized Cu-rich precipitates and protective Cu-Ni enrichment layer formed on the steel surface contributed to the good MIC resistance. Although the Cu-rich precipitates possessed antibacterial actively, they also increased the surface potential difference simultaneously, resulting in promoting MIC. The extremely fine and dispersed Cu-rich precipitates with high-density was the preferred microstructure to achieve better MIC resistance for the steel.

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Polyhexamethylene guanidine molybdate as an efficient antibacterial filler in epoxy coating for inhibiting sulfate reducing bacteria biofilm

Cited by 8 publications

References 51 publications

Combined Thermomechanical Effect of Graphene Oxide and Montmorillonite on Biobased Epoxy Network Formation for Coatings

Combined Thermomechanical Effect of Graphene Oxide and Montmorillonite on Biobased Epoxy Network Formation for Coatings

Detectable quorum signaling molecule via PANI-metal oxides nanocomposites sensors

Effect of Nano-sized Cu-Rich Phase on Microbiological Corrosion Behavior of Cu and Ni-Added Steel for Oil Country Tubular Goods

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