Preparation and characterization of poly(ethylene glycol) stabilized nano silver particles by a mechanochemical assisted ball mill process

Abstract

Nano silver particles with an average mean crystallite size of between 10 and 12 nm were synthesized from different molecular weights of poly(ethylene glycol) as a stabilizing agents, through solid state oxidation of silver nitrate using a higher energy planetary ball mill. Ultraviolet-Visible spectra were used to confirm the synthesis of nano silver particles. The surface plasmon resonance bands were observed around 410 nm. Fourier transformed infrared spectrum, X-ray diffraction, and transmission electronic microscopy techniques were used to characterize the nano silver particles synthesized. Thermal stability was determined using thermogravimetic analysis and the elemental composition of the sample was determined by energy dispersive X-ray analysis. The nano silver particles synthesized, exhibited very good antibacterial activity against Gram-positive bacteria (Bacillus) and Gram-negative bacteria (Pseudomonas aeruginosa). Based on the obtained results, it was additionally explored that the size and the stabilization of the nano silver particles synthesized, strongly depend on the molecular weight of poly(ethylene glycol).

pH-sensitive biopolymeric hydrogel-based on indole-3-acetic acid for wound healing and anti-cancer applications

“…For G 1 ICD, the peak at -C=O stretching frequency of ester group was 1730 cm −1 and in G 2 ICD peak contains at 1722 cm −1 respectively. The new distinguished peaks appeared at 548 cm −1 and 600 cm −1 for G 1 ICD and G 2 ICD respectively, which confirmed the successful incorporation of AuNPs in hydrogels [40]. It also evidenced from band appeared at 1456 cm −1 attributed to -COO − stretching for G 1 ICD and 1487 cm −1 for G 2 ICD with the addition of shifting some of the important peaks of -OH, -CH 2, and -NH towards the lower region.…”

Influence of 2,4-Diamino-6-Phenyl-1-3-5-triazine on bio synthesized TiO2dye-sensitized solar cell fabricated using poly (ethylene glycol) polymer electrolyte

“…Thermo gravimetric analysis (TGA) was elucidating about the weight loss of the PEG polymer electrolyte. Figure 9 shows the PEG polymer electrolyte weight loss at 420°C the scan range fixed between the 50°C-500°C [38]. The TGA graph indicates that the DPT well interact with PEG and maintains the thermal stability and confirms that the synthesized organic compound doped polymer electrolyte decomposed above 420°C.…”

Development andIn-VitroEvaluation of pH Responsive Polymeric Nano Hydrogel Carrier System for Gastro-Protective Delivery of Naproxen Sodium

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