scholarly journals Extraction of Dyes from Sunflower Petal and Their Fourier Transform Infrared Characterization

2022 ◽  
Vol 3 (2) ◽  
Author(s):  
Gboyega Oluwaseun Oyeleke ◽  
Ibraheem Abimbade Abdulazeez ◽  
Ajisola Agnes Adebisi ◽  
Kehinde Nasiru Oyekanmi ◽  
Segun Olaitan Akinbode
Keyword(s):  
Fourier Transform ◽  
Helianthus Annuus ◽  
Functional Groups ◽  
Methanolic Extract ◽  
Fourier Transform Infrared ◽  
Infrared Spectrometry ◽  
Fourier Transform Infrared Spectrometry ◽  
Naoh Solution ◽  
Ft Ir ◽  
Ir Analysis

Three solvents of different polarities (water, methanol and 1% NaOHsolution) were used to extract dyes that produced different shades fromdried sunflower (Helianthus annuus) petal. The extraction proceduresusing different solvent types were carried out separately. The dye extractswere thereafter subjected to Fourier Transform Infrared Spectrometry(FT-IR) analysis for characterization in terms of functional groups. Theintensities of the extracted dyes on the shade of colours obtained on piecesof cotton material varied from yellow in methanolic extract to light yellowin aqueous and black in 1% NaOH solution extracts. The results obtainedfrom the FT-IR analysis revealed the presence of several useful functionalgroups such as N-H, C=H, O-H and C=O in the extracts.

scholarly journals Pengaruh Alumina Terhadap Membran Blend Kitosan-Polivinil Alkohol- LitiumSebagai Membran Elektrolit Baterai

2017 ◽  
Vol 6 (2) ◽  
pp. 72
Author(s):  
Eka Putra Mesakh ◽  
Mery Napitupulu ◽  
Siang Tandi Gonggo
Keyword(s):  
Fourier Transform ◽  
Ionic Conductivity ◽  
Impedance Spectroscopy ◽  
Polymer Electrolyte ◽  
Functional Groups ◽  
Fourier Transform Infrared ◽  
Infrared Spectrometry ◽  
Fourier Transform Infrared Spectrometry ◽  
Measurement Results

The research aim was to study the effect of adding % weight alumina on the conductivity of polymer electrolyte chitosan-PVA-lithium. The characterization of functional groups was determined using fourier transform infrared spectrometry (FTIR). The Ionic conductivity of polymer electrolyte chitosan-PVA-lithium-alumina was measured by using impedance spectroscopy. The measurement results show the polymer electrolyte with the addition of 5% alumina provides the highest ionic conductivity of 3.991 x 10-3S/cm. Battery characteristics of electrolyte polymer of chitosan-PVA-lithium with the addition of alumina have a voltage of 1.4 Volts compared to commercial batteries which have a voltage of 1.5 Volts. These results indicate that alumina can be used as a filler to increase the ionic conductivity.

Synthesis of acrylic acid-allylpolyethoxy amino carboxylate copolymer and its application for removing calcium from crude oil

RSC Advances ◽  
2016 ◽  
Vol 6 (29) ◽  
pp. 24786-24791 ◽  
Author(s):  
Shuaishuai Ma ◽  
Zhilan Cai ◽  
Yuming Zhou ◽  
Shiwei Li ◽  
Shuang Liang
Keyword(s):  
Fourier Transform ◽  
Acrylic Acid ◽  
Crude Oil ◽  
Environmentally Friendly ◽  
Fourier Transform Infrared ◽  
Infrared Spectrometry ◽  
Fourier Transform Infrared Spectrometry ◽  
H Nmr ◽  
Ft Ir

A novel environmentally friendly type of decalcifying agent acid, allylpolyethoxy amino carboxylate (AA–APEA), was synthesized and characterized by Fourier transform infrared spectrometry (FT-IR) and 1H-NMR.

Fourier Transform Infrared Spectrometry/Attenuated Total Reflectance Study of the Reaction of Pentanal and Propanal with 2-(Hydroxymethyl)Piperidine

1992 ◽  
Vol 46 (2) ◽  
pp. 266-272 ◽  
Author(s):  
Eugene R. Kennedy ◽  
Kevin Ashley
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Infrared ◽  
Solution Phase ◽  
Attenuated Total Reflectance ◽  
Infrared Spectrometry ◽  
Fourier Transform Infrared Spectrometry ◽  
Total Reflectance ◽  
Solid Interface ◽  
Ft Ir ◽  
Flow Through

The reactions of propanal and pentanal with 2-(hydroxymethyl)piperidine were investigated by Fourier transform infrared spectrometry/attenuated total reflectance in both the solution phase and at the gas/solid interface. The reactions were studied with the use of a flow-through cylindrical internal reflection (“circle”) cell. Reaction intermediates were tentatively identified by their characteristic infrared absorption frequencies. At the gas/solid interface the reaction is thought to yield a hemiaminal intermediate. In the solution phase a hemiaminal intermediate is believed to form initially, followed by loss of water to generate an enamine product. In both gas-phase and solution-phase studies, an oxazolidine product is prepared only after an ultrasound treatment. The FT-IR/ATR technique reveals detailed mechanistic information concerning reactions between aldehydes and ethanol amines.

scholarly journals QUALITATIVE PHYTOCHEMICAL SCREENING AND FTIR SPECTROSCOPIC ANALYSIS OF GREWIA TILIFOLIA (VAHL) LEAF EXTRACTS

2019 ◽  
pp. 100-107
Author(s):  
DHARMASOTH RAMA DEVI ◽  
GANGA RAO BATTU
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Functional Groups ◽  
Fourier Transform Infrared ◽  
Primary Amines ◽  
Phytochemical Analysis ◽  
Leaf Extracts ◽  
Ft Ir ◽  
Ir Analysis

Objective: The present study aim is to analyse the phytochemicals present in Grewia tilifolia (Vahl) leaf extracts by using Qualitative phytochemical analysis, Fourier-transform infrared spectroscopy (FTIR). Methods: The leaf extracts were prepared using eight different solvents. The phytochemical analysis Fourier transform infrared spectroscopy (FT-IR) analysis were performed using standard methods. Results: The FTIR spectroscopic studies revealed different characteristic peak values with various functional groups present in the compounds of respective extracts. The FT-IR analysis shows the presence of different functional groups such as alcohols, phenols, alkanes, carboxylic acids, aldehydes, ketones, alkenes, primary amines, aromatics, esters, ethers, alkyl halides and aliphatic amine compounds, which showed major compounds present in the leaf extracts. The present study generated the FTIR spectrum profile for the medicinally important plant Grewia tilifolia. Conclusion: The present study provides evediences that different extracts of Grewia tilifolia leaf is useful to cure many serious diseases which remained still problematic and for further isolation of bioactive compounds from the plant which could be of interest for the development of the new drug.

The Use of Fourier Transform Infrared Spectrometry for Monitoring the Retention of Polymers in the Vitreous Humour

1995 ◽  
Vol 5 (3) ◽  
pp. 185-193 ◽  
Author(s):  
Paul D. Dalton ◽  
Alan Jefferson ◽  
Ye Hong ◽  
Traian V. Chirila ◽  
Sarojini Vijayasekaran ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Infrared ◽  
Vitreous Humour ◽  
Infrared Spectrometry ◽  
Fourier Transform Infrared Spectrometry
Sign in / Sign up

Export Citation Format

Share Document