Synthesis, DFT study, theoretical and experimental spectroscopy of fatty amides based on extra-virgin olive oil and their antibacterial activity

Farhan, Nesrain; Al-Maleki, Anis Rageh; Ataei, Shahla; Sarih, Norazilawati Muhamad; Yahya, Rosiyah

doi:10.1016/j.bioorg.2023.106511

Cited by 5 publications

(5 citation statements)

References 98 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From Figure 2 a, it can be seen that the pristine PTFE capillary membrane displayed sharp peaks at 1146 cm −1 and 1201 cm −1 , corresponding to the stretching vibration of -CF 2 [ 42 ]. Observing Figure 2 b–f, it was found that the stretching vibration peak of -CF 2 weakened, and a new characteristic peak at 1089 cm −1 emerged, attributed to the Si-O-Si bond formed after the hydrolytic condensation of VTES [ 43 ]. The adsorption peak at 1655 cm −1 corresponds to the stretching vibration of the C=O bond in the amide group, while the peak at 1420 cm −1 corresponds to the stretching vibration of the C-N bond in the amide group, which corresponded well with the existing literature [ 42 , 43 ].…”

Section: Resultsmentioning

confidence: 99%

“…Observing Figure 2 b–f, it was found that the stretching vibration peak of -CF 2 weakened, and a new characteristic peak at 1089 cm −1 emerged, attributed to the Si-O-Si bond formed after the hydrolytic condensation of VTES [ 43 ]. The adsorption peak at 1655 cm −1 corresponds to the stretching vibration of the C=O bond in the amide group, while the peak at 1420 cm −1 corresponds to the stretching vibration of the C-N bond in the amide group, which corresponded well with the existing literature [ 42 , 43 ]. The results indicated the successful introduction of the amide groups onto the PTFE capillary membranes.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Hydrophilic Modification of Polytetrafluoroethylene (PTFE) Capillary Membranes with Chemical Resistance by Constructing Three-Dimensional Hydrophilic Networks

Hou,

Li,

Che

2024

Polymers

View full text Add to dashboard Cite

Polytetrafluoroethylene (PTFE) capillary membranes, known for the great chemical resistance and thermal stability, are commonly used in membrane separation technologies. However, the strong hydrophobic property of PTFE limits its application in water filtration. This study introduces a method whereby acrylamide (AM), N, N-methylene bisacrylamide (MBA), and vinyltriethoxysilane (VTES) undergo free radical copolymerization, followed by the hydrolysis-condensation of silane bonds, resulting in the formation of hydrophilic three-dimensional networks physically intertwined with the PTFE capillary membranes. The modified PTFE capillary membranes prepared through this method exhibit excellent hydrophilic properties, whose water contact angles are decreased by 24.3–61.2%, and increasing pure water flux from 0 to 1732.7–2666.0 L/m2·h. The enhancement in hydrophilicity of the modified PTFE capillary membranes is attributed to the introduction of hydrophilic groups such as amide bonds and siloxane bonds, along with an increase in surface roughness. Moreover, the modified PTFE capillary membranes exhibit chemical resistance, maintaining the hydrophilicity even after immersion in strong acidic (3 wt% HCl), alkaline (3 wt% NaOH), and oxidative (3 wt% NaClO) solutions for 2 weeks. In conclusion, this promising method yields modified PTFE capillary membranes with great hydrophilicity and chemical resistance, presenting substantial potential for applications in the field of water filtration.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Hydrophilic Modification of Polytetrafluoroethylene (PTFE) Capillary Membranes with Chemical Resistance by Constructing Three-Dimensional Hydrophilic Networks

Hou,

Li,

Che

2024

Polymers

View full text Add to dashboard Cite

show abstract

“…According to literature reports, amino and hydroxyl groups that are not protonated can also work against bacteria by forming hydrogen bonds with the negatively charged bacterial cell wall . However, the stronger the interaction with negative charges on the bacterial wall, the more effective are the antibacterial properties of the compound.…”

Section: Resultsmentioning

confidence: 99%

Antimicrobial Powder Coatings Based on Environmentally Friendly Biocides

Pilch-Pitera,

Krawczyk,

Kędzierski

et al. 2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

In this work, silver-free UV-curable powder coatings with antimicrobial properties were developed. The coatings were made using acrylic resin containing epoxy groups and environmentally friendly biocides such as chitosan or chitosan intercalated in montmorillonite. The UV-curing reaction involved the cationic polymerization of epoxy groups initiated by triarylsulfonium hexafluorophosphate as the photoinitiator. The resulting coatings were evaluated through a series of tests including roughness, gloss, scratch resistance, hardness, adhesion to steel, water contact angle, and antimicrobial resistance. The mechanism of antimicrobial activity was also proposed.

show abstract

“…From Figure 2a, it can be seen that the pristine PTFE capillary membrane displayed sharp peaks at 1146 cm −1 and 1201 cm −1 , corresponding to the stretching vibration of -CF 2 [42]. Observing Figure 2b-f, it was found that the stretching vibration peak of -CF 2 weakened, and a new characteristic peak at 1089 cm −1 emerged, attributed to the Si-O-Si bond formed after the hydrolytic condensation of VTES [43]. The adsorption peak at 1655 cm −1 corresponds to the stretching vibration of the C=O bond in the amide group, while the peak at 1420 cm −1 corresponds to the stretching vibration of the C-N bond in the amide group, which corresponded well with the existing literature [42,43].…”

Section: Chemical Composition Of Modified Ptfe Capillary Membranesmentioning

confidence: 92%

“…Observing Figure 2b-f, it was found that the stretching vibration peak of -CF 2 weakened, and a new characteristic peak at 1089 cm −1 emerged, attributed to the Si-O-Si bond formed after the hydrolytic condensation of VTES [43]. The adsorption peak at 1655 cm −1 corresponds to the stretching vibration of the C=O bond in the amide group, while the peak at 1420 cm −1 corresponds to the stretching vibration of the C-N bond in the amide group, which corresponded well with the existing literature [42,43]. The results indicated the successful introduction of the amide groups onto the PTFE capillary membranes.…”

Section: Chemical Composition Of Modified Ptfe Capillary Membranesmentioning

confidence: 93%

Hydrophilic Modification of Polytetrafluoroethylene (PTFE) Capillary Membranes with Chemical Resistance by Constructing Three-dimensional Hydrophilic Networks

Hou,

Li,

Che

2024

Preprint

View full text Add to dashboard Cite

Polytetrafluoroethylene (PTFE) capillary membranes, known for the great chemical resistance and thermal stability, are commonly used in membrane separation technologies. However, the strong hydrophobic property of PTFE limits its application in water filtration. This study introduces a method that acrylamide (AM), N, N-methylene bisacrylamide (MBA), and vinyltriethoxysilane (VTES) undergo free radical copolymerization, followed by the hydrolysis-condensation of silane bonds, resulting in the formation of hydrophilic three-dimensional networks physically intertwined with the PTFE capillary membranes. The modified PTFE capillary membranes prepared through this method exhibit excellent hydrophilic properties, whose water contact angles are decreased by 24.3%-61.2%, and increasing pure water flux from 0 to 1732.7 L/m²·h-2666.0 L/m²·h. The enhancement in hydrophilicity of the modified PTFE capillary membranes is attributed to the introduction of hydrophilic groups such as amide bonds and siloxane bonds, along with an increase in surface roughness. Moreover, the modified PTFE capillary membranes exhibit chemical resistance, maintaining the hydrophilicity even after immersion in strong acidic (3wt% HCl), alkaline (3wt% NaOH), and oxidative (3wt% NaClO) solutions for 2 weeks. In conclusion, this promising method yields modified PTFE capillary membranes with great hydrophilicity and chemical resistance, presenting substantial potential for applications in the field of water filtration.

show abstract

Synthesis, DFT study, theoretical and experimental spectroscopy of fatty amides based on extra-virgin olive oil and their antibacterial activity

Cited by 5 publications

References 98 publications

Hydrophilic Modification of Polytetrafluoroethylene (PTFE) Capillary Membranes with Chemical Resistance by Constructing Three-Dimensional Hydrophilic Networks

Hydrophilic Modification of Polytetrafluoroethylene (PTFE) Capillary Membranes with Chemical Resistance by Constructing Three-Dimensional Hydrophilic Networks

Antimicrobial Powder Coatings Based on Environmentally Friendly Biocides

Hydrophilic Modification of Polytetrafluoroethylene (PTFE) Capillary Membranes with Chemical Resistance by Constructing Three-dimensional Hydrophilic Networks

Contact Info

Product

Resources

About