Self-assembled fatty acid crystalline coatings display superhydrophobic antimicrobial properties

Elena, Prudnikov,; Polishchuk, Iryna; Sand, Andy; Hamad, Hanan Abu; Massad-Ivanir, Naama; Segal, Ester; Pokroy, Boaz

doi:10.1016/j.mtbio.2022.100516

Cited by 12 publications

(4 citation statements)

References 73 publications

(79 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The crystal structure of long-chain fatty acids like stearic acid or lauric acid typically presents a layered arrangement, which can be proven by X-ray diffraction. Its crystalline morphology can be lamellar, acicular, or columnar forms [29]. The mixture of lauric acid and stearic acid (LASA) in an 80:20 ratio gives a melting point of 39 °C.…”

Section: Fatty Acid Pcmsmentioning

confidence: 99%

Designing Dual-Responsive Drug Delivery Systems: The Role of Phase Change Materials and Metal–Organic Frameworks

Wei,

2024

Materials

View full text Add to dashboard Cite

Stimuli-responsive drug delivery systems (DDSs) offer precise control over drug release, enhancing therapeutic efficacy and minimizing side effects. This review focuses on DDSs that leverage the unique capabilities of phase change materials (PCMs) and metal–organic frameworks (MOFs) to achieve controlled drug release in response to pH and temperature changes. Specifically, this review highlights the use of a combination of lauric and stearic acids as PCMs that melt slightly above body temperature, providing a thermally responsive mechanism for drug release. Additionally, this review delves into the properties of zeolitic imidazolate framework-8 (ZIF-8), a stable MOF under physiological conditions that decomposes in acidic environments, thus offering pH-sensitive drug release capabilities. The integration of these materials enables the fabrication of complex structures that encapsulate drugs within ZIF-8 or are enveloped by PCM layers, ensuring that drug release is tightly controlled by either temperature or pH levels, or both. This review provides comprehensive insights into the core design principles, material selections, and potential biomedical applications of dual-stimuli responsive DDSs, highlighting the future directions and challenges in this innovative field.

show abstract

Section: Fatty Acid Pcmsmentioning

confidence: 99%

Designing Dual-Responsive Drug Delivery Systems: The Role of Phase Change Materials and Metal–Organic Frameworks

Wei,

2024

Materials

View full text Add to dashboard Cite

show abstract

“…Stearic acid (SA), a fatty acid widely found in nature, is present in various oils and fats [30]. In recent years, SA has been widely used as a surface treatment to coat aluminum powders, which enhances its oxidation resistance, improves its handling safety, and promotes a more controlled reactivity upon heating.…”

Section: Introductionmentioning

confidence: 99%

Combustion and mechanical property enhancement strategy based on SA surface activated boron powders

Lu,

Chen,

Zhang

et al. 2024

Preprint

View full text Add to dashboard Cite

Boric acid and other impurities on the surface of boron (B) particles can interact with hydroxyl-terminated polybutadiene (HTPB), which can weak the mechanical properties and energy release efficiency of boron-based solid rocket propellants. In this paper, solvent evaporation induced self-assembly was used to coat the surface of B particles with stearic acid (SA) and the SA@B composite particles were prepared. The effects of SA coating on the combustion performance of B particles and the mechanical properties of HTPB matrix composites were investigated. The results showed that the SA coating enhanced the oxidation efficiency of B particles in air. The heat of combustion value of the SA@B composite particles, reached up to 30.29 MJ/g. During the combustion of SA@B composite particles, there are fewer molten solid particles surrounding the flame, which enhances the stability of B particles combustion process. Furthermore, the SA coating effectively enhanced the dispersion of B particles in HTPB. At a stretching speed of 100 mm/min, the tensile strength of the SA@B/HTPB composite materials is higher than that of the B/HTPB composite materials. Moreover, when the mass loading of the SA@B composite particles reaches 50 wt%, the tensile strength of SA@B/HTPB composite materials achieves 0.63 MPa. The compatibility between B particles and HTPB can be effectively improved by surface-activated B particles with SA, which is of great significance for the storage stability of boron-based solid rocket propellants.

show abstract

“…10−13 Studies prove that the modification of micro/ nanostructures with low-surface-energy materials is the key to constructing superhydrophobic surfaces, 14−19 which can maintain the water droplet in the Cassie−Baxter (CB) state and therefore exhibit excellent superhydrophobicity. 20 Based on this, many kinds of monomers with long carbon chains (such as stearic acid, 21,22 fluorinated compounds, 23,24 and silanes 25 ) are widely used to prepare superhydrophobic coatings due to their lower surface energy, good photo/heat resistance, and chemical stability. 26−30 For example, Polyakov and co-workers first prepared dendrite-like zinc structures on a steel surface by electrodeposition and then treated them with stearic acid, and the obtained coating had excellent superhydrophobicity (WCA > 152°) and anticorrosion properties.…”

Section: ■ Introductionmentioning

confidence: 99%

“…A superhydrophobic surface, with a water contact angle (WCA) larger than 150° and a droplet sliding angle (SA) less than 10°, has attracted increasing attention and shown extensive applications in diverse fields, including oil/water separation, − anti-icing, − self-cleaning, − and biological antifouling. − Studies prove that the modification of micro/nanostructures with low-surface-energy materials is the key to constructing superhydrophobic surfaces, − which can maintain the water droplet in the Cassie–Baxter (CB) state and therefore exhibit excellent superhydrophobicity . Based on this, many kinds of monomers with long carbon chains (such as stearic acid, , fluorinated compounds, , and silanes) are widely used to prepare superhydrophobic coatings due to their lower surface energy, good photo/heat resistance, and chemical stability. − For example, Polyakov and co-workers first prepared dendrite-like zinc structures on a steel surface by electrodeposition and then treated them with stearic acid, and the obtained coating had excellent superhydrophobicity (WCA > 152°) and anticorrosion properties . Wang et al prepared a superhydrophobic coating by spraying fluoroalkyl silane onto fabrics, which exhibited outstanding superhydrophobicity (WCA = 171°) and good durability against UV light, acid, repeated machine washing, and abrasion .…”

Section: Introductionmentioning

confidence: 99%

Fluorine-Free Fluorescent Superhydrophobic Coating with Visual Detection/Convenient Repair of Microdamage and Its Application in Antibacterial/Oil–Water Separation

Wu,

Luo,

Gao

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

The microdamage inevitably generated in a superhydrophobic coating is difficult to detect but can greatly reduce its superhydrophobic properties. Therefore, it is of great significance to construct superhydrophobic coatings with convenient detection/repair of microdamage to expand their wide applications. Herein, a novel fluorine-free fluorescent superhydrophobic coating was efficiently fabricated by simply spraying synthesized fluorescent hydrophobic SiO 2 (fh-SiO 2 ) on an etched copper mesh (e-CM). The constructed fh-SiO 2 /CM exhibits outstanding superhydrophobicity with a higher water contact angle (WCA > 160.2°) and a lower sliding angle (WSA < 4°). More interestingly, the fluorescence of fh-SiO 2 /CM enables the rapid visual identification of microdamage on its surface, which can then be easily repaired by respraying fh-SiO 2 . Furthermore, the fh-SiO 2 /CM also has strong surface robustness, good chemical/thermal/photostability, and antibacterial and self-cleaning properties, making fh-SiO 2 /CM successfully used for oil/water separation. Meanwhile, this strategy is simple, low-cost, and eco-friendly and can be used to construct large-scale superhydrophobic coatings on various substrates, proving its universality and practicability. This study opens an avenue for constructing novel fluoride-free superhydrophobic coatings with microdamage detection and convenient repair functions and has broad application prospects in chemistry, environment, clinical medicine, etc.

show abstract

Self-assembled fatty acid crystalline coatings display superhydrophobic antimicrobial properties

Cited by 12 publications

References 73 publications

Designing Dual-Responsive Drug Delivery Systems: The Role of Phase Change Materials and Metal–Organic Frameworks

Designing Dual-Responsive Drug Delivery Systems: The Role of Phase Change Materials and Metal–Organic Frameworks

Combustion and mechanical property enhancement strategy based on SA surface activated boron powders

Fluorine-Free Fluorescent Superhydrophobic Coating with Visual Detection/Convenient Repair of Microdamage and Its Application in Antibacterial/Oil–Water Separation

Contact Info

Product

Resources

About