Synthesis and characterization of silver nanoparticle nanocomposite thin films with thermally induced surface morphology changes

Tenório‐Neto, Ernandes T.; Guilherme, Marcos R.; Winkler, Manuel E.G.; Cardozo‐Filho, Lúcio; Beneti, Stéphani Caroline; Rubira, Adley F.; Kunita, Marcos H.

doi:10.1016/j.matlet.2015.06.095

Cited by 6 publications

(3 citation statements)

References 20 publications

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“…These changes resulted from migration and coalescence of the silver nanoparticles to the air surface of the nanocomposite film, phenomena also occurred in poly(vinyl chloride)/NPs composite film during UV and thermal ageing, and in low-density polyethylene/NPs material at longer wavelengths exposure [19]. The migration phenomenon was also observed by Tenorio-Neto et al after 1 hour of a thermal treatment at 180°C of copolymer/Ag NPs nanocomposite [46]. The chemical changes in the polymeric matrix followed by infrared spectroscopy were identical to those observed during the photo-oxidative degradation of the pure copolymer.…”

Section: Influence Of Silver Nanoparticles On the Photochemical Behavmentioning

confidence: 55%

Influence of in situ photo-induced silver nanoparticles on the ageing of acrylate materials

Zouari

Dabert

Asia

et al. 2021

Journal of Photochemistry and Photobiology A: Chemistry

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The present work aims to investigate the impact of a low amount of photo-induced silver nanoparticles (0.2 and 0.4 wt.% of Ag NPs) on the stability of acrylate materials (carriers of ester and ether groups) under the combined effect of oxygen and light. Different techniques were implemented to monitor the structural changes at different scales. The determination of the influence of AgNPs required a preliminary investigation of the pure acrylate polymer under the same experimental conditions. The polymer underwent a post-polymerization of the residual vinyl groups and a photo-oxidative degradation. This degradation induced chemical modifications evidenced by infrared spectroscopy and architectural changes resulting from chain scission reactions. These reactions were not only responsible for the steaming of volatile organic compounds, detected by HS-SPME/GC-MS but also for the increase in mesh size controlled by thermoporosimetry. As regards the polymer/Ag NPs composite, the higher the amount of filler dispersed in the matrix, the greater the rate of degradation. This behaviour was due to the photocatalytic effect of Ag NPs, regardless of the loading in nanoparticles. As a result of irradiation, the nanoparticles migrate to the surface of the film and coalesce, thus inducing an increase in size distribution and a gradient structuring as revealed by TEM analysis. The outcomes of this investigation are important for the development of new composite material with new functionalities (antibacterial, optical, conductive properties) for industrial applications as in textile industry.

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Section: Influence Of Silver Nanoparticles On the Photochemical Behavmentioning

confidence: 55%

Influence of in situ photo-induced silver nanoparticles on the ageing of acrylate materials

Zouari

Dabert

Asia

et al. 2021

Journal of Photochemistry and Photobiology A: Chemistry

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“…The absorption spectrum of the photoinitiator must match the emission light from the printer's light source [45]. Other additives can be added to the formulation, e.g., dyes, reactive diluents or fillers to improve features or functionalities of the printed parts [111,[180][181][182][183][184][185][186][187]. Many researchers find VP-3D Printing a flexible technique since, being an open technique, it can be possible to modify or adjust the liquid resin willfully [45,54,188].…”

Section: Vat Polymerization Methodsmentioning

confidence: 99%

Current and emerging trends in polymeric 3D printed microfluidic devices

González

Roppolo

Pirri

et al. 2022

Additive Manufacturing

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“…[55,56] The incorporation of silver functionalities into a polymer can be via either direct dispersion of silver particles within the polymer matrix, [57,58] or exploiting the in situ reduction of a silver precursor (e.g., silver nitrate or silver perchlorate) dispersed in the polymeric medium for obtaining AgNPs through thermal, electrochemical, or photochemical approaches. [59][60][61] Different investigations have reported 3D printed polymer-silver nanocomposites with antibacterial properties. [62][63][64][65] This work aims to fabricate silver-patterned structures, with antifouling features, through light-based 3D printing from a photocurable resin containing silver nitrate (AgNO 3 ) as a silver nanoparticle precursor.…”

Section: Introductionmentioning

confidence: 99%

Single‐Step 3D Printing of Silver‐Patterned Polymeric Devices for Bacteria Proliferation Control

Flores

Bertana

Chiappone

et al. 2021

Macro Materials & Eng

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This work describes the fabrication of silver-patterned polymeric devices via light-based 3D printing methods from a tailored resin. An acrylate resin containing silver nitrate (AgNO 3 ) as a silver precursor is employed to generate silver nanoparticles (AgNPs) through the in situ reduction of the metallic salt. The silver-based resin is processed through a customized stereolithography SL-3D printing to fabricate structures with silver-patterned surfaces. This customized SL-printer (emitting at 405 nm) offers the possibility of adjusting the machine settings during the printing process allowing for AgNPs to be selectively generated by modifying the laser settings during the 3D printing step. Thus, the resin photopolymerization and the photoinduced formation of AgNPs-based strands can be sequentially achieved during the same printing process with the same light source and using the same printable resin. The fabricated silver-patterned devices exhibit different surface features that might be exploited in systems working in a marine environment to control biofilm proliferation. As a proof-of-concept, the antimicrobial behavior of the silver-based 3D printed device is tested against environmental bacterial mixed communities via UV-vis spectroscopy and evaluating the absorbance change. Further tests, however, would be needed to reinforce the evidence of the bacteria behavior on the silver-patterned 3D printed devices.

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Synthesis and characterization of silver nanoparticle nanocomposite thin films with thermally induced surface morphology changes

Cited by 6 publications

References 20 publications

Influence of in situ photo-induced silver nanoparticles on the ageing of acrylate materials

Influence of in situ photo-induced silver nanoparticles on the ageing of acrylate materials

Current and emerging trends in polymeric 3D printed microfluidic devices

Single‐Step 3D Printing of Silver‐Patterned Polymeric Devices for Bacteria Proliferation Control

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