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.

scholarly journals Pengaruh Konsentrasi Getah Pohon Kayu Jawa (Lannea Coromandelica) Terhadap Konduktivitas Membran Blend Kitosan-Polivinil Alkohol-Litium Sebagai Membran Elektrolit

2018 ◽  
Vol 6 (3) ◽  
pp. 154
Author(s):  
Masriana Masriana ◽  
Mery Napitupulu ◽  
Siang Tandi Gonggo
Keyword(s):  
Ionic Conductivity ◽  
Impedance Spectroscopy ◽  
Polymer Electrolyte ◽  
Concentration Effect ◽  
Lannea Coromandelica ◽  
Measurement Results ◽  
Percentage Weight

This research aims to study the concentration effect percentage weight of kayu jawa latex on the conductivity of membranes made from chitosan-PVA-lithium. The ionic conductivity of the membrane chitosan-PVA-lithium-latex kayu jawa was measured by impedance spectroscopy. The measurement results showed that membrane with the addition of 15% latex kayu jawa provided the highest conductivity values of 10.99353 x 10-4 S/cm. Characterization of the polymer electrolyte batteries that made from chitosan-PVA-lithium with the addition of latex kayu jawa have voltage of 1.5 Volts compared to commercial batteries that have tension was 1.5 Volts. These results indicated that latex kayu can be used as a filler to increase the ionic conductivity.

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.

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