Cellulose-based films and membranes: A comprehensive review on preparation and applications

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153500 - 153500

Published: June 29, 2024

Cellulose is the most abundant biopolymer in nature and its application for preparation of numerous materials great interest. Among various properties cellulose described literature, their barrier transport are among prominent ones. Therefore, this paper presents an overview flat such as membranes films well a description structure, methods application. The novel approach article statistical evaluation membrane efficiency based on multiplication flux retention factor to other membranes. first part work involves structure physico-chemical properties. In next section, with focus dissolution-regeneration method bacterial synthesis analysed. Furthermore, basic mechanisms molecule transportation through polymeric materials, describing were introduced assessed. main regarding highlights gas permeation, vapours separation, dyes, ions macromolecular compounds separation two-phases mixtures separation.

Language: Английский

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Plasticized ecofriendly chitosan-potato starch biopolymer electrolyte with enhanced dielectric constant for EDLC application

Emergent Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Language: Английский

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Glycerol-induced enhancement of ionic transport and dielectric properties in LiNO3-doped methylcellulose polymer electrolytes

Ionics, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 7, 2025

Language: Английский

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Development of Flexible Plasticized Ion Conducting Polymer Blend Electrolytes Based on Polyvinyl Alcohol (PVA): Chitosan (CS) with High Ion Transport Parameters Close to Gel Based Electrolytes

Gels, Journal Year: 2022, Volume and Issue: 8(3), P. 153 - 153

Published: March 2, 2022

In the current study, flexible films of polyvinyl alcohol (PVA): chitosan (CS) solid polymer blend electrolytes (PBEs) with high ion transport property close enough to gel based were prepared aid casting methodology. Glycerol (GL) as a plasticizer and sodium bromide (NaBr) an ionic source provider are added PBEs. The have been examined for their structural electrical properties. GL content changed brittle behavior soft manner. X-ray diffraction (XRD) Fourier transform infrared (FTIR) methods used examine electrolyte films. investigation revealed that crystalline character PVA:CS:NaBr declined increasing concentration. FTIR hypothesized interaction between mix salt systems plasticizer. Infrared band shifts fluctuations in intensity found. characteristics such mobility, carrier density, diffusion successfully calculated using experimental impedance data had fitted EEC components dielectric parameters. CS:PVA at ambient temperature has highest conductivity 3.8 × 10 S/cm 35 wt.% NaBr loaded 55 GL. improved properties suitableness energy storage device applications. constant loss higher lower frequencies. relaxation nature samples was investigated tangent electric modulus plots. peak detected spectra tanδ M" plots distribution points asymmetric besides positions. movements ions not free from chain dynamics due viscoelastic being dominant. distorted arcs Argand plot confirmed all

Language: Английский

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Glycerol as an efficient plasticizer to increase the DC conductivity and improve the ion transport parameters in biopolymer based electrolytes: XRD, FTIR and EIS studies

Arabian Journal of Chemistry, Journal Year: 2022, Volume and Issue: 15(6), P. 103791 - 103791

Published: Feb. 14, 2022

In the current work Plasticized sodium ion conducting solid polymer electrolytes (SPEs) based on polyvinyl alcohol: methylcellulose (PVA: MC) and iodide (NaI) as electrolytic salt are fabricated. The SPE films created using a renowned solution casting procedure, results of experiments provided. development polymers-salt complexes is supported by Fourier-transform infrared transform (FTIR) analysis. degrees crystallinity polymers noticeably decreased result glycerol plasticizer, according to X-ray diffraction test. sample inserted with 40 wt% has maximum ionic conductivity, electrical impedance spectroscopy (EIS). Electrical equivalence circuits (EEC) used explore circuit components. For highest electrolyte, number density (n), mobility (µ), diffusion coefficient (D) ions found be 2 × 1021, 1.79 10−6, 4.59 10−8, respectively. A high dispersion real component dielectric permittivity at lower frequency infer space charge influence induced stainless-still (SS) electrodes. tangent loss spectra show that bouncing chance per unit time decreases concentration rises.

Language: Английский

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Progress in green hydrogen production and innovative materials for fuel cells: A pathway towards sustainable energy solutions

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

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Characteristics of a Plasticized PVA-Based Polymer Electrolyte Membrane and H+ Conductor for an Electrical Double-Layer Capacitor: Structural, Morphological, and Ion Transport Properties

Membranes, Journal Year: 2021, Volume and Issue: 11(4), P. 296 - 296

Published: April 20, 2021

Poly (vinyl alcohol) (PVA)-based solid polymer electrolytes doped with ammonium thiocyanate (NH4SCN) and glycerol were fabricated using a solution casting method. Lithium-based energy storage devices are not environmentally friendly materials, they toxic. Thus, proton-conducting materials used in this work as harmless smaller than lithium. The interaction between PVA the electrolyte elements was shown by FTIR analysis. highest conductivity of 1.82 × 10-5 S cm-1 obtained highest-conducting plasticized system (PSP_2) at room temperature. mobility, diffusion coefficient, number density anions cations found to increase increasing glycerol. FESEM investigate influence on film morphology. TNM showed that main charge carriers. LSV electrochemical stability window PSP_2 1.99 V. applied preparation an electrical double layer capacitor device. shape cyclic voltammetry (CV) curve nearly rectangular no Faradaic peaks. From galvanostatic charge-discharge analysis, power density, specific capacitance values constant beyond first cycle 318.73 W/Kg, 2.06 Wh/Kg, 18.30 F g-1, respectively, for 450 cycles.

Language: Английский

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Design of potassium ion conducting PVA based polymer electrolyte with improved ion transport properties for EDLC device application

Journal of Materials Research and Technology, Journal Year: 2021, Volume and Issue: 13, P. 933 - 946

Published: May 24, 2021

This work presents a report on the preparation of plasticized polyvinyl alcohol PVA-based polymer electrolytes using solution cast technique and their characteristics number electrochemical techniques. Electrical impedance spectroscopy (EIS), linear sweep voltammetry (LSV), transfer measurement (TNM) techniques were examined prepared films to determine conductivity, decomposition voltage ion transference number, respectively. The cyclic (CV) charge-discharging measurements implemented an assembled EDLC device estimate charge storage process evaluate performance, EIS was employed for measuring direct current (DC) electrical conductivity calculating transport parameters. CV responses used capacitance stability, influence plasticization investigated in terms properties. TNM te tion obtained ionic incorporated with 40 wt.% 50 glycerol content found be 0.969 0.944, LSV study identify sample. absence redox peaks proved via technique, indicating mechanism storing that comprised accumulation at interfacial region. initial specific (Cs) fabricated displayed value 152.4 F/g.

Language: Английский

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A Study of Methylcellulose Based Polymer Electrolyte Impregnated with Potassium Ion Conducting Carrier: Impedance, EEC Modeling, FTIR, Dielectric, and Device Characteristics

Materials, Journal Year: 2021, Volume and Issue: 14(17), P. 4859 - 4859

Published: Aug. 26, 2021

In this research, a biopolymer-based electrolyte system involving methylcellulose (MC) as host polymeric material and potassium iodide (KI) salt the ionic source was prepared by solution cast technique. The with highest conductivity used for device application of electrochemical double-layer capacitor (EDLC) high specific capacitance. electrical, structural, characteristics systems were investigated using various techniques. According to impedance spectroscopy (EIS), bulk resistance (Rb) decreased from 3.3 × 105 8 102 Ω increase concentration 10 wt % 40 found be 1.93 ×10−5 S/cm. dielectric analysis further verified trends. Low-frequency regions showed constant, ε′ loss, ε″ values. polymer-salt complexation between shown through Fourier transformed infrared (FTIR) studies. transference number measurement (TNM) supported ions predominantly responsible transport process in MC-KI electrolyte. conducting sample observed electrochemically constant potential swept linearly up 1.8 V linear sweep voltammetry (LSV). cyclic (CV) profile reveals absence redox peak, indicating presence charge surface activated carbon electrodes electrolytes. maximum capacitance, Cs value obtained 118.4 F/g at rate mV/s.

Language: Английский

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The study of ion transport parameters associated with dissociated cation using EIS model in solid polymer electrolytes (SPEs) based on PVA host polymer: XRD, FTIR, and dielectric properties

Arabian Journal of Chemistry, Journal Year: 2022, Volume and Issue: 15(11), P. 104196 - 104196

Published: Aug. 13, 2022

Electrical impedance spectroscopy (EIS) model is used to determine ion transport parameters. The parameters such as mobility, carrier density and diffusion coefficient of ions are the subject great interest. solution cast method fabricate SPEs using polyvinyl alcohol (PVA) loaded with different amounts sodium iodide (NaI). XRD deconvolution separate crystalline phase from amorphous phase. degree crystallinity reduced an increased amount NaI. FTIR investigate polymer/salt interactions. To find out circuit element, Nyquist plots results fitted EEC modeling. bulk resistance obtained modeling DC conductivity. At room temperature maximum conductivity 2.41×10-4S/cm measured. regions belong electrode polarization (EP) effect distinguished form spectra dielectric constant loss. Due buildup charge carriers, loss observed be high at low-frequency region. Obvious peaks appeared in tanδ M" salt concentrations. Shifting frequency region detected. incomplete circular arc argand plot shown non-Debye relaxation. It found that increasing frequency, AC increased. EP contributions differentiated spectra.

Language: Английский

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