Glutamine-reinforced silica gel microassembly as protective coating for aluminium surface

Fares, Mohammad M.; Masadeh, Khansa'a H.

doi:10.1016/j.matchemphys.2015.05.042

Cited by 5 publications

(2 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Glutamine is an amino acid with a side chain containing amino and carboxyl groups, making it amenable to covalent bonding or adsorption onto the silica surface 34 . The modification process typically begins with activating the silica surface, followed by introducing glutamine molecules.…”

Section: Introductionmentioning

confidence: 99%

Designing of a new transdermal antibiotic delivery polymeric membrane modified by functionalized SBA-15 mesoporous filler

Samari,

Kashanian,

Zinadini

et al. 2024

Sci Rep

View full text Add to dashboard Cite

A new drug delivery system using an asymmetric polyethersulfone (PES) membrane modified by SBA-15 and glutamine-modified SBA-15 (SBA-Q) was prepared in this study by the aim of azithromycin delivery enhancement in both in vitro and ex vivo experiments. The research focused on optimizing membrane performance by adjusting critical parameters including drug concentration, membrane thickness, modifier percentage, polymer percentage, and pore maker percentage. To characterize the fabricated membranes, various techniques were employed, including scanning electron microscopy, water contact angle, and tensile strength assessments. Following optimization, membrane composition of 17% PES, 2% polyvinylpyrrolidone, 1% SBA-15, and 0.5% SBA-Q emerged as the most effective. The optimized membranes demonstrated a substantial increase in drug release (906 mg/L) compared to the unmodified membrane (440 mg/L). The unique membrane structure, with a dense top layer facilitating sustained drug release and a porous sub-layer acting as a drug reservoir, contributed to this improvement. Biocompatibility assessments, antibacterial activity analysis, blood compatibility tests, and post-diffusion tissue integrity evaluations confirmed the promising biocompatibility of the optimized membranes. Moreover, long-term performance evaluations involving ten repeated usages underscored the reusability of the optimized membrane, highlighting its potential for sustained and reliable drug delivery applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Designing of a new transdermal antibiotic delivery polymeric membrane modified by functionalized SBA-15 mesoporous filler

Samari,

Kashanian,

Zinadini

et al. 2024

Sci Rep

View full text Add to dashboard Cite

show abstract

“…On the other hand, surface modification of polymers found outstanding applications including but not limited to smart and stimuli sensitive materials, − oxidative resistance coatings, − and wide-bandgap (WBG) materials used in tandem solar cells. , WBG materials are also strongly incorporated in power saving electronics and in solid-state lighting (SSL) . Herein, we report the fabrication of novel MWCNTs-g-PAN carbon fiber precursors via grafting of polyacrylonitrile on the surface of acid functionalized multiwalled carbon nanotubes.…”

Section: Introductionmentioning

confidence: 99%

Lightweight MWCNTs-g-PAN Carbon Fiber Precursors. Sensitive High Absorptivity and Novel Wide-Bandgap Conjugated Polymers

Fares

Al‐Rub

Massadeh

2015

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

We report the fabrication of lightweight MWCNTs-g-PAN carbon fiber precursors as high absorptivity and wide-bandgap novel materials. The synthesis of carbon fiber precursors was performed via the grafting process of polyacrylonitrile on the surface of acid functionalized multiwalled carbon nanotubes. 1H NMR and FTIR spectroscopic techniques revealed a successful grafting process, and the formation of MWCNTs-g-PAN fibers with the extent of stabilization (i.e., degree of conjugation) equals 3.0. Such carbon fiber precursors with 200–600 μm thickness demonstrate excellent thermal stability with three degradation steps at 276, 413, and 850 °C, respectively. Carbon fiber precursors display selective high absorption UV radiation and sharp discrete energy difference at 284 nm. They demonstrate linear dependence of absorptivity (ε) on weight fraction of multiwalled carbon nanotubes in the carbon fiber precursors (χCNTs). Large absorptivity of UV radiation occurs using χCNTs (%) = 0.50 specimen due to long chain aligned nanofibril structures, whereas small absorptivity of UV radiation occurs using χCNTs (%) = 8.26 specimen due to wrap-up of short length PAN chains around carbon nanotubes forming flattened and thicker nanotubes, as depicted by ESEM images. Sensitive cutoff UVB absorptions correspond to 4.36–4.38 eV, which classify carbon fiber precursors as promising wide-bandgap materials and probably adapt them to play a focal role in many future optoelectronic and/or aeronautic implementations.

show abstract

Bolaamphiphilic microstructural polyphenol flavonoids as sustainable high efficacy coating for aluminium surface in aqueous solution

2022

Self Cite

View full text Add to dashboard Cite

Bolaamphiphilic polyphenol flavonoids were successfully revealed as a sustainable coating at the solid/liquid interface of an aluminium surface in an aqueous solution. Polyphenol flavonoids extracted from brown onions demonstrated the presence of bolaamphiphiles above 600 ppm. Characterization of the polyphenol flavonoids coating was performed using spectroscopic 1 H-nuclear magnetic resonance and attenuated total reflectance Fourier-transform infrared techniques for chemical identification, UV-vis and optical microscopy techniques were used for bolaamphiphilic microstructures assessment, and a scanning electron microscope was used for the assessment of surface morphology. Variant operating conditions used to show best coating efficacy were as follows: concentration = 600 ppm, solution pH = 10 in the presence of PO 4 3À ion crosslinker, operating temperature = 10 C, microwave pre-irradiation time = 5 s, and turbulent flow of the solution = 300 rpm. Maximum coating efficacy showed a coating efficacy of 97%. The suitability of several adsorption isotherms, like Langmuir, Temkin, and Freundlich, was tested to fit our data. Equilibrium constant values were in favour of successful coating, especially at lower temperatures (20 C). Spontaneous (negative ΔG ) and high affinities of coating material to the surface were revealed from thermodynamic parameters (ΔH and ΔS ). Conclusively, such research is meant to emphasize our continuous support for the use of plant waste in artificial sectors such as coating of metals, and for their economic feasibility and low cost as high efficacy renewable materials.

show abstract

Glutamine-reinforced silica gel microassembly as protective coating for aluminium surface

Cited by 5 publications

References 49 publications

Designing of a new transdermal antibiotic delivery polymeric membrane modified by functionalized SBA-15 mesoporous filler

Designing of a new transdermal antibiotic delivery polymeric membrane modified by functionalized SBA-15 mesoporous filler

Lightweight MWCNTs-g-PAN Carbon Fiber Precursors. Sensitive High Absorptivity and Novel Wide-Bandgap Conjugated Polymers

Bolaamphiphilic microstructural polyphenol flavonoids as sustainable high efficacy coating for aluminium surface in aqueous solution

Contact Info

Product

Resources

About