New Epoxy Poly(dimethyl acrylamide) Polymer for the Dispersion of ZnO Nanoparticles

2020 ◽  
Vol 12 (10) ◽  
pp. 1231-1235
Author(s):  
V. Sorna Gowri ◽  
Raj Kumar Sen ◽  
Sunil Kumar Sanghi ◽  
Avanish Kumar Srivastava
Keyword(s):  
Zinc Oxide ◽  
Polymer Matrix ◽  
Zinc Oxide Nanoparticles ◽  
Thermo Gravimetric Analysis ◽  
Oxide Particle ◽  
Zinc Nitrate ◽  
Oxide Nanoparticles ◽  
Gravimetric Analysis ◽  
Good Thermal Stability ◽  
Copolymer Composites

A series of novel Zinc Oxide (ZnO) copolymer composites films with different Zinc Oxide concentration were prepared through incorporation of pre-made Zinc Oxide particle in to copolymer epoxy poly(dimethyl acrylamide). The copolymer epoxy poly(dimethyl acrylamide) was synthesized by free radical polymerization to disperse the Zinc Oxide nanoparticles. The Zinc Oxide nanoparticles with the diameter of 19 nm–35 nm were synthesized from zinc nitrate via a wet chemical method. The aim of the work is to develop a new method/process/material for the dispersion of Zinc Oxide nanoparticles and testing the performance of these composites films. Thermo gravimetric analysis show that Zinc Oxide nanoparticles were successfully incorporated into the polymer matrix and the Zinc Oxide copolymer composites have a good thermal stability. The micro structural analysis also show newly synthesized polymer disperse the nanoparticles well as evidenced by Scanning Electron Microscopy (SEM) analysis. The uniformly dispersed Zinc Oxide nanoparticle in the polymer matrix and the particles almost remained in their original shape and size even after incorporation in the polymer matrix. Fourier transform infrared spectroscopy (FT-IR) shift of the copolymer adsorbed Zinc Oxide nanoparticles confirmed that polymer molecules chain was anchored on the surface of the nanoparticles.

scholarly journals Matéria Evaluation of zinc oxide nanoparticles influence on hydrophilic polymer matrix systems

2018 ◽  
Vol 23 (4) ◽  
Author(s):  
Jacqueline Silva Cardoso Lunz ◽  
Paulo Sérgio Rangel Cruz da Silva ◽  
Maria Inês Bruno Tavares
Keyword(s):  
Zinc Oxide ◽  
Polymer Matrix ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Hydrophilic Polymer

scholarly journals Precipitation of Zinc Oxide Nanoparticles in Bicontinuous Microemulsions

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Liliana E. Romo ◽  
Hened Saade ◽  
Bertha Puente ◽  
Ma. Luisa López ◽  
Rebeca Betancourt ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Zinc Oxide ◽  
Sodium Hydroxide ◽  
Zinc Oxide Nanoparticles ◽  
Sodium Dodecyl ◽  
Particle Diameter ◽  
Average Diameter ◽  
Zinc Nitrate ◽  
Oxide Nanoparticles ◽  
Sulfosuccinate Sodium

Zinc oxide nanoparticles were obtained directly, avoiding the calcination step, by precipitation at 70°C in bicontinuous microemulsions stabilized with a mixture of surfactants sodium bis (2-ethylhexyl) sulfosuccinate/sodium dodecyl sulfate (2/1, wt./wt.) containing 0.7 M zinc nitrate aqueous solution. Two concentrations of aqueous solution of precipitating agent sodium hydroxide were used under different dosing times on microemulsion. Characterization by X-ray diffraction and electron microscopy allowed us to identify particles with an acicular rod-like morphology and a hexagonalwurtzitecrystal structure as small as 8.5 and 30 nm in average diameter and length, respectively. Productivities much higher than those typical in the preparation of zinc oxide nanoparticles via reverse microemulsions were obtained. Particle size was the same at the two studied sodium hydroxide concentrations, while it increases as dosing time of the precipitant agent increases. It is believed that the surfactant film on the microemulsion channels restricts the particle diameter growth.

The Influence of Annealing Temperature on Structural Properties of Zinc Oxide Nanoparticles Synthesized by Precipitation Method

2017 ◽  
Vol 728 ◽  
pp. 215-220 ◽  
Author(s):  
Natpasit Chaithanatkun ◽  
Korakot Onlaor ◽  
Benchapol Tunhoo
Keyword(s):  
Zinc Oxide ◽  
Crystallite Size ◽  
Zinc Oxide Nanoparticles ◽  
Annealing Temperature ◽  
Average Crystallite Size ◽  
Zinc Nitrate ◽  
Precipitation Method ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Hexagonal Wurtzite Crystal Structure

In the present work, the precipitation method was applied to prepare zinc oxide nanoparticles in the presence of zinc nitrate and potassium hydroxide as precursor solutions. The influence of annealing temperature on the properties such as structural and morphological of zinc oxide nanoparticles were performed by X-ray diffraction technique, field-emission scanning electron microscopy, Fourier-transform infrared spectroscopy, and Raman spectroscopy. The effects of annealing temperature on the crystallite size of zinc oxide nanoparticles have investigated. The XRD results represented that the zinc oxide nanoparticles exhibits high crystallinity of hexagonal wurtzite crystal structure. The average crystallite size of nanoparticles increased from 18 to 31 nm when the annealing temperature had increased. The morphology images show that the nanoparticles in this work were spherical in shape. Raman and FT-IR spectra confirm that the quality of Zn-O vibrational mode is stronger at higher annealing temperature.

scholarly journals Green approach in fabrication of photocatalytic, antimicrobial, and antioxidant zinc oxide nanoparticles – hydrothermal synthesis using clove hydroalcoholic extract and optimization of the process

2020 ◽  
Vol 9 (1) ◽  
pp. 375-385 ◽  
Author(s):  
Mahvash Anvarinezhad ◽  
Afshin Javadi ◽  
Hoda Jafarizadeh-Malmiri
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Bioactive Compound ◽  
Bactericidal Effect ◽  
Zinc Nitrate ◽  
Sem Analysis ◽  
Zinc Salt ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Clove Extract

AbstractZinc oxide nanoparticles (ZnO NPs) were hydrothermally fabricated, using hydroalcoholic clove extract. GC-MS analysis demonstrated that Eugenol is the main bioactive compound of the prepared extract. Experiments were designed, based on the central composite design. The effects of different amounts of zinc nitrate (2–6 g) and clove extract (10–30 mL) were evaluated for antioxidant and bactericidal properties of the formed ZnO NPs using the response surface methodology. The attained results demonstrated that more desirable NPs with maximum antioxidant activity (85.23%) and bactericidal effect, against Escherichia coli and Staphylococcus aureus, as manifested in the diameter of formed clear zones of 11.12 and 12.11 mm, respectively, were resulted using 3.98 g of the zinc salt and 20.30 mL of the clove extract. Furthermore, XRD and SEM analysis results revealed that the fabricated ZnO NPs had a hexagonal shape with a particle size of 50 nm and could degrade 70% of methylene blue during UV radiation.

scholarly journals Antimicrobial Activity of Nypa Fruticans (Nipa) Palm Starch and Zinc Oxide Nanoparticles (ZnONps) in Textile: Solving the Scarcity Using Local Resources

2021 ◽  
pp. 84-89
Author(s):  
Karina Milagros R. Cui- Lim ◽  
Flyndon Mark S. Dagalea ◽  
Nelia M. Adora ◽  
Cherry I. Ultra
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Antimicrobial Property ◽  
Recent Decade ◽  
Zinc Nitrate ◽  
Oxide Nanoparticles ◽  
E Coli ◽  
Nypa Fruticans ◽  
Local Resources ◽  
Nipa Palm

Nanotechnology is an emerging interdisciplinary technology that has been booming in many areas during the recent decade. The application of nanoscale materials and structures, usually ranging from 1 to 100 nanometers (nm), is an emerging area of nanoscience and nanotechnology. In this work, Zinc Oxide Nanoparticles were prepared by wet chemical method using zinc nitrate and sodium hydroxide as precursors and Nypa fruticans (Nipa) starch as stabilizing agent. The antimicrobial property was found effective against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) bacteria. It has a clear zone of inhibition against S. aureus and   E. coli.  The scanning electron micrograph exhibited that after several washings the cloth facemask coated with nipa starch and zinc oxide still adheres to the cloth.

scholarly journals Green Synthesis, Characterization and Antimicrobial Activity of Zinc Oxide Nanoparticles Using Root Extract of Viola canescens Wall. ex. Roxb.

2019 ◽  
Vol 31 (3) ◽  
pp. 551-554 ◽  
Author(s):  
Arun Kumar Khajuria ◽  
Abha Negi ◽  
N.S. Bisht ◽  
V. Maurya ◽  
Anuj Kandwal
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Cost Effective ◽  
Zinc Nitrate ◽  
Oxide Nanoparticles ◽  
Root Extract ◽  
Green Approach ◽  
Uv Visible ◽  
Average Size ◽  
Nano Size

Stable zinc oxide nanoparticles were synthesized by using green approach of nanotechnology. The present investigation aimed to synthesize, stable, cost effective, rapid, eco-friendly approach for the bio-reduction of zinc nitrate hexahydarate to their nano size using phytochemicals present in the root extract of Viola canescens. The synthesized nanoparticles were further characterized by UV-visible, XRD, FTIR, SEM techniques and tested against the Gram-negative and Gram-positive pathogenic cultures of bacteria. The average size of synthesized nanoparticles was less than 11 nm with hexagonal morphology. The clear zone of inhibition against tested bacteria showed their capability as antimicrobial agent.

scholarly journals Illicium Verum Mediated Preparation of Zinc Oxide Nanoparticles: XRD, Spectral and Microscopic Analysis

2021 ◽  
Vol 37 (4) ◽  
pp. 905-910
Author(s):  
M. Kalaiamthi ◽  
A. Maheshwaran ◽  
K. Hariharan ◽  
B. Poovarasan ◽  
P. Chandru
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Microscopic Analysis ◽  
Zinc Nitrate ◽  
Sem Analysis ◽  
Oxide Nanoparticles ◽  
Spectroscopic Techniques ◽  
Ft Ir ◽  
Illicium Verum ◽  
Xrd Techniques

The Zinc oxide nanoparticles were successfully synthesized using Zinc nitrate as the precursor and extract of Illicium verum was used as the reducing and stabilizing agent. Synthesized Zinc oxide particles in nano size were characterizedby FT-IR, Ultraviolet-visible SEM & XRD techniques. The formed nanoparticles were confirmed as zinc oxide nanoparticles by UV- Visible, FT-IR spectroscopic techniques. XRD data gave the results regarding structure and size of the prepared nano-sized particles. According to the results of XRD, the size was calculated as 27.01 nm. SEM analysis results sphere and flake like shape and morphology of Zinc oxide nanoparticles.

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