scholarly journals Development and Characterization of Fenugreek Protein-Based Edible Film

Foods ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1976
Author(s):  
Neha Kumari ◽  
Sneh Punia Bangar ◽  
Michal Petrů ◽  
R.A. Ilyas ◽  
Ajay Singh ◽  
...  
Keyword(s):  
Edible Film ◽  
Morphological Properties ◽  
Protein Concentrate ◽  
Protein Films ◽  
X Ray Diffraction ◽  
Water Vapor Absorption ◽  
Morphological Attributes ◽  
Good Thermal Stability ◽  
Edible Packaging

The present investigation studied the physicochemical, mechanical, structural, thermal, and morphological attributes of a novel edible film formed from fenugreek protein concentrate. Films were produced at different pH—9, 10, 11, and 12—and the effect of the pH on the films was studied. As the pH increased, tensile strength increased while water vapor absorption decreased, which is interrelated to the surface morphological properties; as the pH increased, the surface became smoother and compact without any cavities. The films produced were darker in color. Fenugreek protein films exhibited good thermal stability. Fourier transform infrared spectroscopy (FTIR) revealed the presence of strong bonding for the films made at alkaline pH. X-ray diffraction analysis (XRD) indicated the major structure of the film was amorphous. The study demonstrated that the fenugreek protein concentrate film has influential characteristics and can be used as an edible packaging film.

scholarly journals An Efficient and Novel Ammonia Sensor Based on Polypyrrole/Tin Oxide/MWCNT Nanocomposite

2020 ◽  
Vol 32 (6) ◽  
pp. 1505-1510
Author(s):  
Ahmad Husain ◽  
Mohd Urooj Shariq ◽  
Anees Ahmad
Keyword(s):  
Electron Microscopy ◽  
Tin Oxide ◽  
Charge Carriers ◽  
Morphological Properties ◽  
X Ray Diffraction ◽  
Ammonia Sensing ◽  
Transmission Electron ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

In present study, the synthesis and characterization of a novel polypyrrole (PPy)/tin oxide (SnO2)/MWCNT nanocomposite along with pristine polypyrrole is reported. These materials have been studied for their structural and morphological properties by FT-IR spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. PPy/SnO2/MWCNT nanocomposite has been converted into a pellet-shaped sensor, and its ammonia sensing studies were carried out by calculating the variation in the DC electrical conductivity at different concentration of ammonia ranging from 10 to 1500 ppm. The sensing response of the sensor was determined at 1500, 1000, 500, 200, 100 and 10 ppm and found to be 70.4, 66.1, 62.2, 55.4, 50.8 and 39.7%, respectively The sensor showed a complete reversibility at lower concentrations along with excellent selectivity and stability. Finally, a sensing mechanism was also proposed involving polarons (charge carriers) of polypyrrole and lone pairs of ammonia molecules

Characterization of Spherical Molybdenum Powders Prepared by RF Plasma Processing

2012 ◽  
Vol 482-484 ◽  
pp. 2563-2567 ◽  
Author(s):  
Yan Wei Sheng ◽  
Zhi Meng Guo ◽  
Jun Jie Hao
Keyword(s):  
Feeding Rate ◽  
Morphological Properties ◽  
Narrow Particle Size Distribution ◽  
Rf Plasma ◽  
X Ray Diffraction ◽  
X Ray ◽  
Plasma Spheroidization ◽  
Powder Characteristics ◽  
Near Net Shape

Spherical molybdenum powders were synthesized by (RF) plasma with irregular molybdenum powders. The powder characteristics and spheroidization efficiency of the feeding rate for obtain the spherical molybdenum powders were studied. The phase composition and morphological properties of the powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM). As a result, the fine spherical powders composed of pure molybdenum with favorable dispersity and its surface became smooth. The spheroidization efficiency of synthesized powders was almost 100 % at feeding rate of 5g/min. LMS analysis indicated that the as-prepared powder had narrow particle size distribution and the spheroidization efficiency of the sample decreases gradually as increasing of the feeding rate. The RF plasma spheroidization of molybdenum powder is an ideal route synthesis of well- spherical molybdenum powders used as near net-shape technology and powder metallurgy.

scholarly journals Synthesis and Characterization of CdS Slim Film Grown by CBD Method

2020 ◽  
Vol 5 (7) ◽  
pp. 170-172
Author(s):  
Vhadgal Gorakh Anna
Keyword(s):  
Living Arrangements ◽  
Uv Spectroscopy ◽  
X Ray Diffraction ◽  
Cadmium Sulfate ◽  
Morphological Attributes ◽  
X Ray ◽  
Hexagonal Shape ◽  
Cbd Method ◽  
The Ideal

Substance shower testimony strategy have been utilized to store Cadmium sulfide dainty film. The affect of the appropriate response temperature and PH is explored on this work. The introduction of CdS dainty film Cadmium Sulfate, Anomia, Thiourea and Double refined water is utilized as wellspring of material . Examining Electron microscopy (SEM ) is utilized for morphological attributes of CdS slender film. UV spectroscopy have been utilized for optical living arrangements of the CdS slender film .The band hole of CdS dainty film by methods for UV spectroscopy changed into 2.42 eV . The X-R diffraction investigation is affirmed that the CdS meager film were polycrystline with hexagonal shape the ideal direction of CdS slender film had been(002) and crystalline size 50nM .It changed into chose from the broadenings of corrousponding X-Ray diffraction tops by means of the utilization of Debye scherrer recipe.

scholarly journals Synthesis and Characterization of Nanocrystalline Aluminophosphate AlPO4-5 Molecular Sieve

2018 ◽  
Vol 24 (3) ◽  
pp. 161
Author(s):  
Asir Alnaama
Keyword(s):  
Molecular Sieves ◽  
Ammonium Hydroxide ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Good Thermal Stability ◽  
Synthesis Parameters ◽  
Bet Analysis ◽  
Xrd Patterns ◽  
Adsorption Desorption

Nanocrystalline aluminophosphate AlPO4-5 molecular sieves were synthesized by hydrothermal method (HTS). Synthesis parameters like time and temperature of crystallization were investigated. Type of template (R) and ratio of R/P2O5 were studied also. Characterization of the synthesized AlPO4-5 were done by powder X-ray diffraction (XRD), scanning electron microscopy (SEM/EDX), Fourier transform infrared (FTIR), differential scanning calorimetry-thermogravimetry analysis (DSC-TGA), and N2 adsorption-desorption BET analysis. XRD patterns results showed excellent crystallinity for two types of templates, di-n-propylamine (DPA) and tetrapropyl ammonium hydroxide (TPAOH) for alumminophosphate five (AFI) structure. Nano-level for particle size of 66 nm was revealed by AFM test. Good thermal stability was obtained in DSC-TGA results. Best time and temperature of crystallization of 24h and 190 O C were got. Optimum R/P2O5 for two kind of template was established.  

Preparation and Characterization of a Novel Flame Retarded MCA-PA6 Resin by In Situ Polymerization

2011 ◽  
Vol 399-401 ◽  
pp. 444-448 ◽  
Author(s):  
Jun Qian Mu ◽  
Yi Yang ◽  
Zhi Han Peng
Keyword(s):  
Loss Rate ◽  
In Situ Polymerization ◽  
Mass Loss Rate ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Good Thermal Stability ◽  
Flame Retarded ◽  
Maximum Mass Loss

In this paper, a novel flame retarded MCA-PA6 (PA6 incorporated with melamine cyanurate) resin was synthesized by in-situ polymerization. The synthetic product was characterized by X-ray diffraction (XRD), scanning electronic microscopy (SEM), Fourier transform infrared spectroscope (FTIR), thermogravimetry analysis (TG), differential scanning calorimetry (DSC) and elemental analysis. The result showed that good dispersability were obtained in MCA-based PA6 prepared successfully. Meanwhile, the maximum mass loss rate appeared at about 450 °C and the residual char increased from 1.2 wt% to 3.2 wt% at 500 °C due to the existence of MCA.This research revealed MCA-PA6 owned a good thermal stability, hence there was potential flame retardance.

scholarly journals Development and Characterization of Poly(1-vinylpyrrolidone-co-vinyl acetate) Copolymer Based Polymer Electrolytes

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Nurul Nadiah Sa’adun ◽  
Ramesh Subramaniam ◽  
Ramesh Kasi
Keyword(s):  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Vinyl Acetate ◽  
Polymer Electrolytes ◽  
Morphological Properties ◽  
X Ray Diffraction ◽  
Casting Technique ◽  
Solution Casting Technique

Gel polymer electrolytes (GPEs) are developed using poly(1-vinylpyrrolidone-co-vinyl acetate) [P(VP-co-VAc)] as the host polymer, lithium bis(trifluoromethane) sulfonimide [LiTFSI] as the lithium salt and ionic liquid, and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide [EMImTFSI] by using solution casting technique. The effect of ionic liquid on ionic conductivity is studied and the optimum ionic conductivity at room temperature is found to be 2.14 × 10−6 S cm−1for sample containing 25 wt% of EMImTFSI. The temperature dependence of ionic conductivity from 303 K to 353 K exhibits Arrhenius plot behaviour. The thermal stability of the polymer electrolyte system is studied by using thermogravimetric analysis (TGA) while the structural and morphological properties of the polymer electrolyte is studied by using Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction analysis (XRD), respectively.

Characterization of two forms of sepiolite and related Mg-rich clay minerals from Yenidoğ an (Sivrihisar, Turkey)

Clay Minerals ◽  
2014 ◽  
Vol 49 (1) ◽  
pp. 91-108 ◽  
Author(s):  
M. Yeniyol
Keyword(s):  
Field Work ◽  
Ion Concentration ◽  
Morphological Properties ◽  
Chemical Analyses ◽  
X Ray Diffraction ◽  
X Ray ◽  
Direct Precipitation ◽  
Extensive Field ◽  
Sedimentary Succession

AbstractAn Early Pliocene sedimentary succession in the Yenidoğan area, Sivrihisar, Turkey, consists of sepiolite, stevensite, kerolite, dolomite and magnesite. The geology, mineralogy and geochemistry of the succession was examined by extensive field work along several trenches and a representative measured section, followed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermal, and chemical analyses.Structurally, two distinct forms of sepiolites were distinguished by XRD: (a) well crystallized sepiolite with a 110 reflection at 12.07–12.3 Å , and (b) poorly crystallized sepiolite in which the 110 reflection occurs at 12.7–13.0 Å (denoted as sepiolite-13Å ). Differences in crystal chemistry, thermal and morphological properties of these forms, the vibrational spectra and XRD characterization of the related phyllosilicates were also documented.Stevensite, kerolite and sepiolite were formed by direct precipitation from alkaline lake water rich in Mg and Si. Sepiolite-13Å was probably formed by transformation from precursor smectite via dissolution-precipitation, more likely during early diagenesis. Environmental conditions such as ion concentration, salinity and variations in pH may have controlled the formation of the phyllosilicates.

scholarly journals PREPARATION AND CHARACTERIZATION OF CDO-NIO NANOCOMPOSITES USING LASER PULSE DEPOSITION APPROACH

2021 ◽  
Vol 03 (03) ◽  
pp. 01-09
Author(s):  
Khamees D. MAHMOOD ◽  
Kadhim A. AADIM ◽  
Mohammed G. HAMMED
Keyword(s):  
Laser Pulse ◽  
Morphological Properties ◽  
X Ray Diffraction ◽  
Energy Band Gap ◽  
X Ray ◽  
Force Microscopy ◽  
Atomic Force ◽  
Pulse Deposition ◽  
Deposited Films

In this manuscript, CdO-NiO nanocomposites (in the form of thin film) with particular concentrations are paper using laser pulse deposition technique under the effect of different laser energies (300, 400, 500, and 600 mJ). Furthermore, the structural, morphological, and optical analyses are thoroughly investigated. In particular, well-oriented deposited films are observed by using X-ray diffraction technique, while the morphological properties are investigated using two different techniques namely field emission scanning electron microscopy and atomic force microscopy which have revealed small nanoparticles with approximate diameter of 50 nm and average surface roughness ranging between 6.5 and 20.3 nm for laser energies of 400 and 600 mJ, respectively. Continuously, the optical technique applied which used UV-Vis analysis has showed cut-off phenomenon at around 339 nm. In the meanwhile, the energy band gap for the deposited films was found to be within the range of 2.2 and 2.4 eV, as a result of different laser energies.

Biofilms of cellulose and hydroxyapatite composites: Alternative synthesis process

2020 ◽  
Vol 35 (6) ◽  
pp. 469-478
Author(s):  
Cari M Pieper ◽  
Wellington LO da Rosa ◽  
Rafael G Lund ◽  
Adriana F da Silva ◽  
Evandro Piva ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Water Solution ◽  
Calcium Nitrate ◽  
Morphological Properties ◽  
Synthesis Process ◽  
Calcium Nitrate Tetrahydrate ◽  
X Ray Diffraction ◽  
Good Thermal Stability ◽  
Microwave Assisted ◽  
Nitrate Tetrahydrate

A new biofilm of cellulose coated with hydroxyapatite particles have been prepared using a simple, fast and low temperature process based on a microwave-assisted hydrothermal synthesis. The cellulose used as matrix of the biocomposite was extracted from banana stems residues. The hydroxyapatite coating was performed using calcium nitrate tetrahydrate, phosphoric acid, and 1,2-ethylenediamine dispersed in a cellulose/water solution, with posterior microwave-assisted hydrothermal synthesis, for 5 min at 140°C. The chemical, structural, thermal, and morphological properties of the composites were investigated by X-ray diffraction, infrared spectroscopy, thermogravimetry and field emission scanning electron microscopy. Results showed that the methodology was effective to produce high quality composites, with good thermal stability. Cell viability tests indicated that the cellulose/Hap films were not cytotoxic.

Preparation and Characterization of Fibrous Hydroxyapatite/Chitosan Nanocomposites with High Hydroxyapatite Dosage

2012 ◽  
Vol 457-458 ◽  
pp. 365-371 ◽  
Author(s):  
Cai Yun Zhang ◽  
Dai Yin Peng ◽  
Chuan Hua Lu ◽  
Xian Ping Wang ◽  
Qian Feng Fang
Keyword(s):  
Morphological Properties ◽  
In Vitro Tests ◽  
X Ray Diffraction ◽  
Permeable Membrane ◽  
X Ray ◽  
Chitosan Matrix ◽  
Transmission Electron

In this paper the hydroxyapatite fibers reinforced chitosan nanocomposites with high hydroxyapatite dosage (70~90 wt%) were synthesized by in-situ hybridization. The semi-permeable membrane was used to control the process of hybridization and morphology of hydroxyapatite. The compositional and morphological properties of nanocomposites were investigated by FTIR spectroscopy, X-ray diffraction, and transmission electron microscopy. The results showed that the hydroxyapatite were carbonated nanometer crystalline fibers with high aspect ratio (about 25) and dispersed uniformly in the nanocomposites. The high-resolution image indicated that the growth of nano-hydroxyapatite crystallites in the chitosan matrix preferred in the c-axis. The mechanical properties of these nanocomposites were enhanced dramatically and the compressive strength increases almost to 170MPa when the hydroxyapatite content is 70 wt%. The in vitro tests indicated that the composites have high bioactivity and degradation. These properties illustrated the potential application of this kind of nanocomposites for bone tissue engineering.

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