Solvent-free and large-scale preparation of silver@polypyrrole core@shell nanocomposites; structural properties and terahertz spectroscopic studies

Ali, Sara E.; Eisa, Wael H.; Abouelsayed, A.

doi:10.1016/j.compositesb.2019.107289

Cited by 21 publications

(14 citation statements)

References 64 publications

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“…The core-shell material showed increased optical conductivity as a function of the pyrrole fraction due to the amplied polymerization of conducting polypyrrole. 101 The effect of the molecular mass of polymeric stabilizers was again observed by using PEG-6000 and PEG-8000. 102 Smaller spherical NPs around 10 nm in diameter were obtained by milling while employing the polymer with the longest polymeric chain.…”

Section: Monometallic Npsmentioning

confidence: 90%

“…Very recently, PVP was also used as a simultaneous capping and reducing agent in the mechanochemical preparation of Ag@polypyrrole core-shell nanocomposites. 101 The rst step of the synthesis consists of the formation of Ag NPs by manual grinding AgNO 3 and PVP. Aer an established time, the pyrrole monomer was introduced in different amounts and polymerized in the powder mixture.…”

Section: Monometallic Npsmentioning

confidence: 99%

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Challenges and opportunities in the bottom-up mechanochemical synthesis of noble metal nanoparticles

et al. 2020

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Section: Monometallic Npsmentioning

confidence: 90%

Section: Monometallic Npsmentioning

confidence: 99%

Challenges and opportunities in the bottom-up mechanochemical synthesis of noble metal nanoparticles

et al. 2020

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“…The banana peel-stabilized Ag NPs will be abbreviated as B.P/Ag NPs throughout the paper. 23,24 Synthesis of colloidal Ag NPs "AgL": At room temperature, Ag NPs were synthesized by adding10 ml of (1 mM) AgNO 3 to different volumes (50-450 μl) of the banana peel extract solution (100 mg dissolved at 10 ml of 70% EtOH/H 2 O). Shake the prepared mixture with hand and allow to stand in the dark; 10 min later, a change in color was observed from colorless into reddish-brown color.…”

Section: Green Synthesis Of Ag Npsmentioning

confidence: 99%

Solid and liquid green Ag nanoparticles based on banana peel extract as an eco‐friendly remedy for ringworm in pets

Emam

Eisa

Hasanin

2022

Surface & Interface Analysis

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Green chemistry‐based biowaste has been taken attention toward new components for many applications especially in dermatophytes of animals and humans. The main goal of this study is to assist the synthetic pathways; clean and large‐scale synthesis of silver nanoparticles is achieved as a promising alternative green technique with high efficiency, simplicity and less hazardous waste based on agro‐waste of banana peels extract powder. The preparation of silver nanoparticles is directly via solid‐state reaction and the liquid one based on the natural agro‐waste of banana peels under specific conditions for treating ringworm in pets. Ultraviolet (UV)‐visible spectroscopy, Fourier transform infrared spectroscopy (FT‐IR), and transmission electron microscope (TEM) were used to prove the prepared nanoparticles. A total of 30 samples from pets (dogs and cats) were subjected to mycological examination. Ten (33.3%) were culture positive, and 100% of the positive samples were Microsporum canis. In vitro antifungal activity against M. canis isolates using both the disc diffusion and the broth microdilution methods was evaluated. The significant results for solid silver nanoparticles (Ags1 and Ags2) than liquid Ag NPs (AgL) with p < 0.05 compared with itraconazole were observed. This biomaterial from waste could be used as a fast, simple, eco‐friendly, and efficient method to prepare Ag NPs on solid that can be applied in the veterinary sector against ringworm.

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“…Core-shell polymers can be manufactured through a vast number of experimental means, including various methods such as electrospinning [2] and solvent-free and large scale processes [3], as well as ultrasound-assisted methods [4]. Furthermore, material properties have been studied under several circumstances and environmental conditions, such as laser fields, mini-emulsions, pre-emulsions and acid media [5,6].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of a Core-Shell Copolymer with Different Glass Transition Temperatures

Goulis

Kartsonakis

Charitidis

2020

Fibers

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The aim of this study is to synthesize an organic core-shell co-polymer with a different glass transition temperature (Tg) between the core and the shell that can be used for several applications such as the selective debonding of coatings or the release of encapsulated materials. The co-polymer was synthesized using free radical polymerization and was characterized with respect to its morphology, composition and thermal behavior. The obtained results confirmed the successful synthesis of the co-polymer copolymer poly(methyl methacrylate)@poly(methacrylic acid-co-ethylene glycol dimethacrylate), PMMA@P(MAA-co-EGDMA), which can be used along with water-based solvents. Furthermore, the Tg of the polymer’s core PMMA was 104 °C, while the Tg of the shell P(MAA-co-EGDMA) was 228 °C, making it appropriate for a wide variety of applications. It is worth mentioning that by following this specific experimental procedure, methacrylic acid was copolymerized in water, as the shell of the copolymer, without forming a gel-like structure (hydrogel), as happens when a monomer is polymerized in aqueous media, such as in the case of super-absorbent polymers. Moreover, the addition and subsequent polymerization of the monomer methyl methacrylate (MAA) into the mixture of the already polymerized PMMA resulted in a material that was uniform in size, without any agglomerations or sediments.

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Solvent-free and large-scale preparation of silver@polypyrrole core@shell nanocomposites; structural properties and terahertz spectroscopic studies

Cited by 21 publications

References 64 publications

Challenges and opportunities in the bottom-up mechanochemical synthesis of noble metal nanoparticles

Challenges and opportunities in the bottom-up mechanochemical synthesis of noble metal nanoparticles

Solid and liquid green Ag nanoparticles based on banana peel extract as an eco‐friendly remedy for ringworm in pets

Synthesis and Characterization of a Core-Shell Copolymer with Different Glass Transition Temperatures

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