scholarly journals Interaction between Gelatin and Nano-Silver Particle: Foundation for Nano-Silver in Antibacterial Leather

2021 ◽  
Vol 21 (1) ◽  
pp. 35-46
Author(s):  
Jinwei ZHANG ◽  
Weite YANG ◽  
Yonghan WEN ◽  
Hongbin SUN ◽  
Guojun ZHU ◽  
...  
Keyword(s):  
Particle Size ◽  
Light Scattering ◽  
Silver Particle ◽  
Main Type ◽  
Interaction Process ◽  
Gelatin Solution ◽  
Silver Particles ◽  
Nano Silver ◽  
Ft Ir ◽  
Dynamic Fluorescence

In order to explain the interaction between collagen and nano-silver, gelatin solution was blended with nano-silver particles (AgNPs) with particle size 26 mm, and then the mixture was interacted under different time, pH and temperature. The changes in the process were measured by UV-Vis, fluorescence spectroscopy, dynamic light scattering and FT-IR. The results showed that the main type of reaction between gelatin and AgNPs was electrostatic interaction and the interaction was diffusive encounters. The particle size and distribution of nano-silver would not be affected by gelatin, however, there was dynamic fluorescence quenching of gelatin after nano-silver particle induced. The longer time and lower pH were beneficial for the interaction process while the interaction balanced after 60 min and pH 3.0 resulted in the most drastic interaction. Moreover, nano-silver would not impair gelatin structure during the interaction process. In short, the results in this work might be a foundation and reference for applying nano-silver in antibacterial leather producing.

Influence of Concentration Modes on Morphology of Nano-Silver

2011 ◽  
Vol 694 ◽  
pp. 284-287 ◽  
Author(s):  
Wei Wei Li ◽  
Lu Hai Li ◽  
Xu Wei Hu ◽  
Hua Fang ◽  
Xian Leng ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Silver Particle ◽  
Particle Sizes ◽  
Silver Particles ◽  
Nano Silver ◽  
Silver Solution ◽  
Particle Size And Morphology ◽  
Size And Morphology ◽  
Sem Test

In order to compare different concentration modes' influence on the nano-silver particle size and morphology,we use three methods to refine nano-silver solution prepared in the lab as:1 centrifugal the solution directly,2 deposit the solution with acetone,3 centrifugal the solution with acetone added.Then test the solution processed with particle size distribution,UV-vis and SEM.The result shows that:the particle sizes of the nano-silver solutions enriched with the three methods are 162.5nm,163.5nm,164nm;the peak of the UV-vis absorption curve are 425nm, 426.5nm,427nm,we can see that different methods of enrichment have less influence on the nano-silver particles' size and morphology. Also the same conclusion can be drawn from SEM test.

Application of Nano Drug Carrier in the Detection of Human Hemoglobin Content

2020 ◽  
Vol 12 (2) ◽  
pp. 125-131
Author(s):  
Jixing Yang
Keyword(s):  
Modified Electrode ◽  
Silver Particle ◽  
Drug Carrier ◽  
Silver Electrode ◽  
Reduction Peak ◽  
Human Hemoglobin ◽  
Silver Particles ◽  
Hemoglobin Content ◽  
Peak Current ◽  
Nano Silver

This paper studies the application of nano drug carrier in the detection of human hemoglobin content. Taking nano modified electrode as nano drug carrier, the application of nano silver particle modified silver electrode and nano poly thionine modified electrode in the detection of human hemoglobin content is studied. Atomic force microscope, UV-Vis and FT-IR are used to characterize the nano poly(thionine), and the electrochemical properties of nano poly(thionine) modified electrode. The silver electrode decorated with nano silver particles is made. The electrochemical behavior of hemoglobin on the modified electrode is studied. The experimental results show that a pair of redox peaks appear in the silver electrode modified by nano silver particles. With the increase of Hb concentration, the redox peak current in the cyclic voltammogram of the silver electrode modified by nano silver particles increases correspondingly, and the hemoglobin has a good current response on the silver electrode modified by nano silver particles, which is a kind of adsorption current. The electrochemical activity of nano poly thionine shows a decreasing tendency with pH value. After adding hemoglobin, there is a significant reduction peak near –0.4 V. With the increase of hemoglobin concentration, the reduction peak current increases accordingly. The nano poly thionine modified electrode has a catalytic effect on the reduction of hemoglobin. The results show that the two nano drug carriers, nano poly thionine modified electrode and nano silver particle modified silver electrode, can effectively analyze and determine human hemoglobin.

The Structure and Properties of Nano Silver Antibacterial Polyester Fabrics

2011 ◽  
Vol 332-334 ◽  
pp. 860-864 ◽  
Author(s):  
Ting Ting Zhou ◽  
Hong Lin ◽  
Yu Yue Chen
Keyword(s):  
Hyperbranched Polymer ◽  
Antibacterial Activities ◽  
Structure And Properties ◽  
Silver Particles ◽  
Polyester Fabrics ◽  
Nano Silver ◽  
Eds Analysis ◽  
Washing Durability ◽  
Finishing Process ◽  
Ft Ir

The homemade amino-terminated hyperbranched polymer (HBP-NH2) was applied as a reducing agent to prepare nano silver. A suitable finishing process was proposed to treat polyester fabrics with nano silver solutions. The distribution and morphology of nano silver on the surface of polyester fiber were observed by SEM. EDS analysis was carried out to investigate element contents of the treated polyester fabrics. The FT-IR spectra, physical mechanical properties and antibacterial activities of nano silver antibacterial polyester fabrics had been tested and compared with common polyester fabrics. The results showed that nano silver particles dispersed uniformly on the surface of the fiber. The treated polyester fabrics attained excellent antibacterial activity and washing durability. The nano silver antibacterial polyester fabrics had an expansive application prospect.

Isolasi Dan Karakterisasi Bentonit Alam Menjadi Nanopartikel Monmorillonit

2018 ◽  
Vol 3 (1) ◽  
pp. 12 ◽  
Author(s):  
Zaimahwati Zaimahwati ◽  
Yuniati Yuniati ◽  
Ramzi Jalal ◽  
Syahman Zhafiri ◽  
Yuli Yetri
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Particle Size ◽  
Surface Morphology ◽  
Average Diameter ◽  
Particle Size Analyzer ◽  
Ft Ir ◽  
Scanning Electron ◽  
Sedimentation Processes

<p>Pada penelitian ini telah dilakukan isolasi dan karakterisasi bentonit alam menjadi nanopartikel montmorillonit. Bentonit alam yang digunakan diambil dari desa Blangdalam, Kecamatan Nisam Kabupaten Aceh Utara.  Proses isolasi meliputi proses pelarutan dengan aquades, ultrasonic dan proses sedimentasi. Untuk mengetahui karakterisasi montmorillonit dilakukan uji FT-IR, X-RD dan uji morfologi permukaan dengan Scanning Electron Microscopy (SEM). Partikel size analyzer untuk menganalisis dan menentukan ukuran nanopartikel dari isolasi bentonit alam. Dari hasil penelitian didapat ukuran nanopartikel montmorillonit hasil isolasi dari bentonit alam diperoleh berdiameter rata-rata 82,15 nm.</p><p><em>In this research we have isolated and characterized natural bentonite into montmorillonite nanoparticles. Natural bentonite used was taken from Blangdalam village, Nisam sub-district, North Aceh district. The isolation process includes dissolving process with aquades, ultrasonic and sedimentation processes.  The characterization of montmorillonite, FT-IR, X-RD and surface morphology test by Scanning Electron Microscopy (SEM). Particle size analyzer to analyze and determine the size of nanoparticles from natural bentonite insulation. From the research results obtained the size of montmorillonite nanoparticles isolated from natural bentonite obtained an average diameter of 82.15 nm.</em></p>

Insecticidal, antibacterial and dye adsorbent properties of Sargassum muticum decorated nano-silver particles

2021 ◽  
Vol 139 ◽  
pp. 432-441
Author(s):  
Subrata Trivedi ◽  
Mohammed Ali Alshehri ◽  
Al Thabiani Aziz ◽  
Chellasamy Panneerselvam ◽  
Hatem. A. Al-Aoh ◽  
...  
Keyword(s):  
Sargassum Muticum ◽  
Silver Particles ◽  
Nano Silver

scholarly journals Functional Properties and Molecular Degradation of Schizostachyum Brachycladum Bamboo Cellulose Nanofibre in PLA-Chitosan Bionanocomposites

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 2008
Author(s):  
Samsul Rizal ◽  
N. I. Saharudin ◽  
N. G. Olaiya ◽  
H. P. S. Abdul Khalil ◽  
M. K. Mohamad Haafiz ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Moisture Content ◽  
Polymeric Materials ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Thickness Swelling ◽  
Compression Moulding ◽  
Ft Ir ◽  
Degradation Properties

The degradation and mechanical properties of potential polymeric materials used for green manufacturing are significant determinants. In this study, cellulose nanofibre was prepared from Schizostachyum brachycladum bamboo and used as reinforcement in the PLA/chitosan matrix using melt extrusion and compression moulding method. The cellulose nanofibre(CNF) was isolated using supercritical carbon dioxide and high-pressure homogenisation. The isolated CNF was characterised with transmission electron microscopy (TEM), FT-IR, zeta potential and particle size analysis. The mechanical, physical, and degradation properties of the resulting biocomposite were studied with moisture content, density, thickness swelling, tensile, flexural, scanning electron microscopy, thermogravimetry, and biodegradability analysis. The TEM, FT-IR, and particle size results showed successful isolation of cellulose nanofibre using this method. The result showed that the physical, mechanical, and degradation properties of PLA/chitosan/CNF biocomposite were significantly enhanced with cellulose nanofibre. The density, thickness swelling, and moisture content increased with the addition of CNF. Also, tensile strength and modulus; flexural strength and modulus increased; while the elongation reduced. The carbon residue from the thermal degradation and the glass transition temperature of the PLA/chitosan/CNF biocomposite was observed to increase with the addition of CNF. The result showed that the biocomposite has potential for green and sustainable industrial application.

scholarly journals Influence of size polydispersity on magnetic field tunable structures in magnetic nanofluids containing superparamagnetic nanoparticles.

2021 ◽  
Author(s):  
Dillip Kumar Mohapatra ◽  
Philip James Camp ◽  
John Philip
Keyword(s):  
Magnetic Field ◽  
Particle Size ◽  
Light Scattering ◽  
Optical Microscopy ◽  
Brownian Dynamics ◽  
Phase Contrast ◽  
Superparamagnetic Nanoparticles ◽  
Magnetic Nanofluids ◽  
Dynamics Simulations ◽  
Brownian Dynamics Simulations

We probe the influence of particle size polydispersity on field-induced structures and structural transitions in magnetic fluids (ferrofluids) using phase contrast optical microscopy, light scattering and Brownian dynamics simulations. Three...

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