Surface hydrophobization by electrostatic deposition of hydrophobically modified poly(acrylates) and their complexes with surfactants

Gîfu, Ioana Cătălina; Maxim, Monica Elisabeta; Iovescu, Alina; Simion, Elena Livia; Aricov, Ludmila; Anastasescu, Mihai; Munteanu, Cornel; Anghel, Dan F.

doi:10.1016/j.apsusc.2016.03.036

Cited by 10 publications

(16 citation statements)

References 37 publications

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“…We observed that the contact angle increased suddenly after the deposition of five bilayers. Moreover, after aging six months, the contact angle and the rough surface increased significantly for the films containing 20 bilayers according to our study [20].…”

Section: Resultssupporting

confidence: 76%

“…Also, our previous study evidenced that a PDADMAC outer layer leads to ball-like particles being randomly deposed [20]. Consequently, the obtained films presented higher roughness and contact angle compared with the films without a PDADMAC outer layer.…”

Section: Resultsmentioning

confidence: 76%

“…The hydrophobically modified polymer PAC 18 Na used for the fabrication of multilayer films was prepared according to the synthesis previously reported, together with the characterization of the prepared polymers [22]. The polymer-surfactant complexes PAC 18 Na-C x TAB (x = 10, 12, 14 and 18) were prepared according to our previous study [20], and the aqueous PAC 18 Na solution was added to a C x TAB micellar solution under continuous stirring. The complexes were formed due to the electrostatic interaction between the negatively charged PAC 18 Na and the positively charged C x TAB.…”

Section: Preparation Of Hydrophobically Modified Poly(acrylate)-surfamentioning

confidence: 99%

“…The LbL depositions were achieved using a programmable dipping machine (Dipping Robot DR-3, Riegler & Kirstein GmbH, Potsdam, Germany). The dipping procedure was reported elsewhere [20,21]. After six months of aging at room temperature and in the dark, the investigated films were exposed to a microbial environment.…”

Section: Preparation Of Hydrophobically Modified Poly(acrylate)-surfamentioning

confidence: 99%

“…In our previous work, we obtained LbL films by electrostatic interaction between hydrophobically modified sodium poly(acrylates) (PAC n Na) with and without cationic surfactants and PDADMAC [20,21]. Our present study is focused on the antimicrobial activity of hydrophobically modified HMPA and HMPA-surfactant complex LbL multilayer films.…”

Section: Introductionmentioning

confidence: 99%

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Antimicrobial Activities of Hydrophobically Modified Poly(Acrylate) Films and Their Complexes with Different Chain Length Cationic Surfactants

et al. 2019

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Multilayer films from hydrophobically modified poly(acrylic acid) (HMPA) and their complexes with cationic surfactants were successfully prepared using the layer-by-layer (LbL) method. Alkyl trimethylammonium bromide derivatives with various lengths of the hydrophobic chain (C10–C18) were used to interact with the HMPA polymer, generating highly hydrophobic domains in the films and contributing to the antimicrobial properties of the prepared coating. The antimicrobial efficiency against common pathogens such as Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, and Candida albicans was investigated in relationship with the morphology and composition of the thin films. The wettability and roughness of the multilayered systems were evaluated using atomic force microscopy (AFM) and contact angle measurements. The effects of the microbial exposure on the surface properties of the prepared films were investigated in order to assess the stability of the HMPA-deposited multilayers and the durability of the antimicrobial activity. The hydrophobically modified films exhibited antimicrobial activity against the studied pathogens. The best efficiency was registered in the case of S. aureus, which showed an inhibition of growth up to 100% after 2 h. C. albicans proved to be less sensitive to the effect of the multilayers deposited from HMPA–surfactant complexes. These results suggest that HMPA and HMPA–surfactant complex LbL multilayer films can be used as promising materials in antimicrobial surface coatings with increased resistance to pathogens during exposure.

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Section: Resultssupporting

confidence: 76%

Section: Resultsmentioning

confidence: 76%

Section: Preparation Of Hydrophobically Modified Poly(acrylate)-surfamentioning

confidence: 99%

Section: Preparation Of Hydrophobically Modified Poly(acrylate)-surfamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Antimicrobial Activities of Hydrophobically Modified Poly(Acrylate) Films and Their Complexes with Different Chain Length Cationic Surfactants

et al. 2019

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Physicochemical Changes of Alginate and Polyacrylate Mixture Induced by Interactions of the Appended Units

Leontieş

Băran

Ioniţă

et al. 2023

Macro Chemistry & Physics

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This study aims to analyze the physicochemical properties of solutions containing the mixture of polyacrylates functionalized with alkyl chains moieties and alginate (Alg) functionalized with 𝜷-cyclodextrins (CD). Functionalization of anionic polymers with host (CD) and guest units (alkyl chain) allow local host-guest interaction which determines discrete changes in properties of the resulted mixtures. The systems are investigated by surface tension, viscosity, and zeta-potential measurements, Fourier transform infrared (FTIR), UV-vis, fluorescence, and electron paramagnetic resonance spectroscopies. Spectroscopic methods reveal the local changes induced by the formation of host-guest interactions in modified polyacrylates and modified Alg which explain the macroscopic parameters of solutions such as viscosity, surface tension, and zeta potential. The host-guest interactions stabilize the repulsive forces between the anionic polymers and influence the formation of intercoil of functionalized polyacrylates. The practical application comprises in crystal violet incorporation in the polymeric mixtures and reveals that dyes' properties, such as solubilization and stabilization, may be enhanced. Valuable information, related to the conformational changes generated by the particular formulations of these polymer mixtures, is obtained. The results have the potential applications in chemical sensing, molecular recognition, and the printing industry.

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The inhibition action of some organic polymers on the corrosion carbon steel in acidic media

Brânzoi¹,

Băran²,

Aricov³

et al. 2020

Chem. Pap.

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Surface hydrophobization by electrostatic deposition of hydrophobically modified poly(acrylates) and their complexes with surfactants

Cited by 10 publications

References 37 publications

Antimicrobial Activities of Hydrophobically Modified Poly(Acrylate) Films and Their Complexes with Different Chain Length Cationic Surfactants

Antimicrobial Activities of Hydrophobically Modified Poly(Acrylate) Films and Their Complexes with Different Chain Length Cationic Surfactants

Physicochemical Changes of Alginate and Polyacrylate Mixture Induced by Interactions of the Appended Units

The inhibition action of some organic polymers on the corrosion carbon steel in acidic media

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