Hemocompatibility and Surface Morphology of Vegetable Oil Based Polyurethane Eggshell Powder Nanocomposite

2021 ◽  
Vol 37 (1) ◽  
pp. 229-234
Author(s):  
K. J. Jasmine Jerlite ◽  
N. T. Nevaditha
Keyword(s):  
Weight Loss ◽  
Ir Spectroscopy ◽  
Surface Morphology ◽  
Olive Oil ◽  
Chemical Resistance ◽  
Sem Analysis ◽  
Ft Ir ◽  
Polyurethane Nanocomposites ◽  
Polyurethane Matrix ◽  
Ft Ir Spectroscopy

In the present work, biocompatible polyurethane (PU) and PU – based nanocomposites (PUENs) of different composition have been synthesized from hydroxylated olive oil- based polyurethane and eggshell powder as filler. The synthesized polyurethane nanocomposites are characterized by FT-IR spectroscopy, SEM and XRDanalysis. The chemical resistance and biodegradability of the PUENs have been studied in different chemical environments. SEM analysis confirms the incorporation of eggshell powder into the polyurethane matrix. TheXRD study reveals that the intensity of the peak increases from 90 to 137 cts with the increase in crystallinity. The chemical resistance shows the swelling and degradation of the PUENs at higher concentration of the HCl and NaOH. Insoil burial degradation method 13 %-18% of weight loss is observed in PUEN3 and PUEN4. The hemolytic rate of PUEN4 is <2% at 10 to 40µg/ml showing non-hemolysis, implies better hemocompatibility of the sample.

Detection and quantification of extra virgin olive oil adulteration with edible oils by FT-IR spectroscopy and chemometrics

2015 ◽  
Vol 7 (9) ◽  
pp. 3939-3945 ◽  
Author(s):  
Xiaodan Sun ◽  
Weiqi Lin ◽  
Xinhui Li ◽  
Qi Shen ◽  
Hongyuan Luo
Keyword(s):  
Ir Spectroscopy ◽  
Olive Oil ◽  
Edible Oils ◽  
Virgin Olive Oil ◽  
Extra Virgin Olive Oil ◽  
Ft Ir ◽  
Detection And Quantification ◽  
Ft Ir Spectroscopy

The adulterated oils, including the type of adulterants and levels of adulteration, are identified from extra virgin olive oil using FT-IR spectroscopy coupled with chemometrics.

Preparation and characterization of cross-linked poly (vinyl alcohol)-graphene oxide nanocomposites as an interlayer for Schottky barrier diodes

2018 ◽  
Vol 32 (01) ◽  
pp. 1750276 ◽  
Author(s):  
Lida Badrinezhad ◽  
Çigdem Bilkan ◽  
Yashar Azizian-Kalandaragh ◽  
Ali Nematollahzadeh ◽  
İkram Orak ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Ir Spectroscopy ◽  
Chemical Interaction ◽  
Low Frequency ◽  
Sem Analysis ◽  
Poly Vinyl Alcohol ◽  
X Ray Diffraction ◽  
Voltage Dependent ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Cross-linked polyvinyl alcohol (PVA) graphene oxide (GO) nanocomposites were prepared by simple solution-mixing route and characterized by Raman, UV–visible and fourier transform infrared (FT-IR) spectroscopy analysis, X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The XRD pattern and SEM analysis showed significant changes in the nanocomposite structures, and the FT-IR spectroscopy results confirmed the chemical interaction between the GO filler and the PVA matrix. After these morphological characterizations, PVA-GO-based diodes were fabricated and their electrical properties were characterized using current–voltage (I–V) and impedance-voltage-frequency (Z-V-f) measurements at room temperature. Semilogarithmic I–V characteristics of diode showed a good rectifier behavior. The values of C and G/[Formula: see text] increased with decreasing frequency due to the surface/interface states (N[Formula: see text]) which depend on the relaxation time and the frequency of the signal. The voltage, dependent profiles of N[Formula: see text] and series resistance (R[Formula: see text]) were obtained from the methods of high-low frequency capacitance and Nicollian and Brews, respectively. The obtained values of N[Formula: see text] and R[Formula: see text] were attributed to the use of cross-linked PVA-GO interlayer at the Au/n-Si interface.

Detection of Olive Oil Adulteration Using FT-IR Spectroscopy and PLS with Variable Importance of Projection (VIP) Scores

2012 ◽  
Vol 89 (10) ◽  
pp. 1807-1812 ◽  
Author(s):  
Abdelkhalek Oussama ◽  
Fatiha Elabadi ◽  
Stefan Platikanov ◽  
Fouzia Kzaiber ◽  
Roma Tauler
Keyword(s):  
Ir Spectroscopy ◽  
Olive Oil ◽  
Variable Importance ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Multiscale exploration of hydrocarbons adsorption and hopping through the ZSM-5 channels - from Monte Carlo modelling to experiment

2021 ◽  
Author(s):  
Maciej Strzempek ◽  
Karolina A. Tarach ◽  
Kinga Góra-Marek ◽  
Fernando Rey ◽  
Miguel Palomino ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Ir Spectroscopy ◽  
Aliphatic Hydrocarbons ◽  
Adsorption Studies ◽  
Ft Ir ◽  
Gravimetric Adsorption ◽  
Hydrocarbons Adsorption ◽  
Ft Ir Spectroscopy

Abstract In this article the results of the statistical MC modelling corroborated by the FT-IR spectroscopy and gravimetric adsorption studies of the low aliphatic hydrocarbons in ZSM-5 (Si/Al =28 or...

scholarly journals Vibrational Spectroscopic Investigation of Blood Plasma and Serum by Drop Coating Deposition for Clinical Application

2021 ◽  
Vol 22 (4) ◽  
pp. 2191
Author(s):  
Jing Huang ◽  
Nairveen Ali ◽  
Elsie Quansah ◽  
Shuxia Guo ◽  
Michel Noutsias ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Outer Ring ◽  
Imaging Method ◽  
Fluorescence Lifetime Imaging ◽  
Drying Process ◽  
Vibrational Signal ◽  
Coating Deposition ◽  
Ft Ir ◽  
Sample Droplet ◽  
Ft Ir Spectroscopy

In recent decades, vibrational spectroscopic methods such as Raman and FT-IR spectroscopy are widely applied to investigate plasma and serum samples. These methods are combined with drop coating deposition techniques to pre-concentrate the biomolecules in the dried droplet to improve the detected vibrational signal. However, most often encountered challenge is the inhomogeneous redistribution of biomolecules due to the coffee-ring effect. In this study, the variation in biomolecule distribution within the dried-sample droplet has been investigated using Raman and FT-IR spectroscopy and fluorescence lifetime imaging method. The plasma-sample from healthy donors were investigated to show the spectral differences between the inner and outer-ring region of the dried-sample droplet. Further, the preferred location of deposition of the most abundant protein albumin in the blood during the drying process of the plasma has been illustrated by using deuterated albumin. Subsequently, two patients with different cardiac-related diseases were investigated exemplarily to illustrate the variation in the pattern of plasma and serum biomolecule distribution during the drying process and its impact on patient-stratification. The study shows that a uniform sampling position of the droplet, both at the inner and the outer ring, is necessary for thorough clinical characterization of the patient’s plasma and serum sample using vibrational spectroscopy.

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