Effect of lanthanum 4-hydroxy cinnamate on the polymerisation, condensation and thermal stability of hybrid sol–gel formulations

Vega, Ana Suarez; Agustín-Sáenz, Cecilia; Brusciotti, Fabiola; Somers, Anthony; Forsyth, Maria

doi:10.1007/s10971-020-05315-x

Cited by 13 publications

(11 citation statements)

References 45 publications

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“…The bands in the range of 1500-800 cm −1 appeared as a result of the existence of C-H, O-H, C-O, and C-O-C vibrations, due to the cellulose [9]. Compared to blank cotton fabric, Figure 1b shows a weak signal around 770 cm −1 that was assigned to the stretching vibration of the Si-O-Si bonds, thus confirming that: (i) the fabric was modified via a ring-opening reaction between the GPTMS-MWCNTs nanocomposite and the cotton fibers [36,37] and (ii) the -OH groups of the MWCNTs could react only with the -OCH3 groups of the GPTMS molecules. Additionally, two new bands appeared at 2910 and 2857 cm −1 that were related to the stretching of the methylene groups from the GPTMS molecules.…”

Section: Ir Analysismentioning

confidence: 68%

Multiwalled-Carbon-Nanotubes (MWCNTs)–GPTMS/Tannic-Acid-Nanocomposite-Coated Cotton Fabric for Sustainable Antibacterial Properties and Electrical Conductivity

2022

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We propose a method of crosslinking multiwalled carbon nanotubes (MWCNTs) with cotton fabric. 3-Glycidoxypropyltrimethoxy silane (GPTMS) polymer was used for the stabilization and modification of the surfaces of MWCNTs. The presence of tannic acid in the finishing formulation adds a sustainable functionality to the treated surface. The formation of the GPTMS–MWCNTs nanocomposite as well as the MWCNTs–GPTMS tannic-epoxy nanocomposite on the fabric surface was confirmed by Fourier-transform infrared spectra (FTIR). The surface morphology and physical properties were investigated. An assessment of antibacterial activity, UV-protective properties, and electrical conductivity was performed. The post-treatment results of the MWCNTs–GPTMS nanocomposite fabric with tannic acid exhibited superior antibacterial character with the highest inhibition zones for Staphylococcus aureus and Escherichia coli (26 mm, 24 mm). On the contrary, the electrical conductivity was negatively impacted. The treatment of cotton fabric with tannic acid showed a great UV-protection-factor estimation of 96.2, which was additionally improved by treatment with MWCNTs 152.1. Cotton fabric treated with cotton/GPTMS/tannic acid/MWCNTs as well as cotton/GPTMS/MWCNTs recorded the highest electrical-conductivity properties. Fabrication of MWCNTs–GPTMS/tannic-acid-nanocomposite-coated cotton fabric for durable antibacterial and UV protection with improved electrical and physical properties was successfully achieved.

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Section: Ir Analysismentioning

confidence: 68%

Multiwalled-Carbon-Nanotubes (MWCNTs)–GPTMS/Tannic-Acid-Nanocomposite-Coated Cotton Fabric for Sustainable Antibacterial Properties and Electrical Conductivity

2022

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“…On the other hand, MAPTS has three hydrolysable groups and one functional group, therefore, a maximum of four different signals representing the different products of the hydrolysis and condensation reactions. In this case, signals related to the hydrolysis and condensation of MAPTS are expected in the range between – 40 and – 70 ppm and they are commonly denoted as T signals [ 36 , 37 ].…”

Section: Resultsmentioning

confidence: 99%

“…1 B shows the liquid 29 Si NMR spectra of formulations containing the titanium moiety. In this case, the intensity of the signal decreases due to the lower concentration of 29 Si in the formulations [ 37 ]. In addition, the three spectra showed no signal for T 1 and an increment in the T 3 signal in comparison to the silicon sol before addition of the titanium sol.…”

Section: Resultsmentioning

confidence: 99%

“…This reduction in intensity is so pronounced that the Q signals are close to disappear from the spectra. This could be attributed to the formation of Si–O–Ti bonding that affects the resolution of the spectra broadening the peaks due to a greater distribution of the silicon environments [ 37 ]. Furthermore, the only signal that is barely appreciated is the Q 2 and it seems to be more intense in the formulation containing the highest concentration of eugenol.…”

Section: Resultsmentioning

confidence: 99%

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On the antimicrobial properties and endurance of eugenol and 2-phenylphenol functionalized sol-gel coatings

Suárez-Vega,

Berriozabal,

Perez de Iriarte

et al. 2024

Heliyon

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“…[ 2,21,27,28 ] A better performance was observed in 4‐hydroxy cinnamate based sol‐gel formulations after the successful incorporation of lanthanum. [ 29,30 ] Recently, ionic coumarate corrosion inhibitors have been incorporated into acrylic UV coatings showing promising results in terms of corrosion inhibition. [ 31–33 ] An interesting methodology for the industrial application of those carboxylate inhibitors would be to incorporate them into waterborne latexes.…”

Section: Introductionmentioning

confidence: 99%

Incorporation of a Coumarate Based Corrosion Inhibitor in Waterborne Polymeric Binders for Corrosion Protection Applications

Quites

Leiza

Mantione

et al. 2022

Macro Materials & Eng

Self Cite

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The incorporation of organic corrosion inhibitors into waterborne coatings is optimized in this work. Herein, p‐coumaric acid (4‐hydroxycinnamic acid) is modified by a butyl radical and its effectiveness as an anticorrosive free inhibitor in solution is confirmed by potentiodynamic polarization (PP). The molecule is then successfully incorporated into waterborne polymeric binders by employing different polymerization techniques in dispersed media. Whenever possible, the inhibitor is also blended into the bare latexes to compare the effect of the incorporating method. The anticorrosion performance of the obtained coatings is tested and compared by electrochemical analysis. Promising results are obtained for the coatings produced by semibatch emulsion polymerization even at the low concentration of 1.5 mg of inhibitor g−1 latex. The intact control coating without inhibitor shows an impedance of up to 106 Ω and a phase angle of 72° after 1 h of immersion in the corrosive medium, meanwhile the coating with inhibitor shows higher values, 106.7 Ω and 80°. Active corrosion inhibition is observed in the coating with inhibitor in which a defect has been done, as the impedances drop to 103.9 Ω after 24 h of immersion in the saline solution while in the control scratched coating it drops to 103.6 Ω.

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Effect of lanthanum 4-hydroxy cinnamate on the polymerisation, condensation and thermal stability of hybrid sol–gel formulations

Cited by 13 publications

References 45 publications

Multiwalled-Carbon-Nanotubes (MWCNTs)–GPTMS/Tannic-Acid-Nanocomposite-Coated Cotton Fabric for Sustainable Antibacterial Properties and Electrical Conductivity

Multiwalled-Carbon-Nanotubes (MWCNTs)–GPTMS/Tannic-Acid-Nanocomposite-Coated Cotton Fabric for Sustainable Antibacterial Properties and Electrical Conductivity

On the antimicrobial properties and endurance of eugenol and 2-phenylphenol functionalized sol-gel coatings

Incorporation of a Coumarate Based Corrosion Inhibitor in Waterborne Polymeric Binders for Corrosion Protection Applications

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