Structural and Ionic Transport Study on CMC Doped NH4Br: A New Types of Biopolymer Electrolytes

Samsudin, A. S.; Isa, M. I. N.

doi:10.3923/jas.2012.174.179

Cited by 67 publications

(23 citation statements)

References 6 publications

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“…The increased dielectric value trend was also observed at higher frequencies (10 KHz and 100 KHz). Similar behaviors were also reported previously [ 47 ]. The dielectric value variation with changes in electric field frequency is shown in Figure 6 b.…”

Section: Resultssupporting

confidence: 91%

Proton-Conducting Biopolymer Electrolytes Based on Carboxymethyl Cellulose Doped with Ammonium Formate

Sohaimy

Isa

2022

Polymers

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In this work, CMC-AFT biopolymer electrolytes system was developed using Carboxymethyl cellulose (CMC) doped with varied amount (10–50 wt.%) of ammonium formate (AFT) in order to study the effect of AFT on the biopolymer-salt system. The chemical structure of the biopolymer was studied using Fourier-Transform infrared (FTIR) and X-ray diffraction (XRD). The interaction between the COO− of CMC and the weakly-bound H+ of NH4+ AFT occurred at 1573 cm−1 as seen in FTIR analysis and the amorphous phase was found to increase with the addition of AFT as seen from XRD pattern. Both FTIR and XRD testing indicates that the AFT had disrupted the CMC crystalline structure. The ionic conductivity of the CMC-AFT biopolymer electrolytes increases and achieved the highest value of 1.47 × 10−4 S·cm−1 with the addition of AFT. The impedance measurement showed that the capacitive and resistive behavior inside the biopolymer diminished when 50 wt.% of AFT was added. Dielectric analysis confirmed the increased number of charge carriers is due to the increase in AFT composition. Further dielectric analysis showed the occurrence of conductivity relaxation peak thus affirmed the charge carriers’ ability to travel further to a longer distances when AFT composition increases from 10 to 50 wt.%. The dielectric properties confirmed the non-Debye behavior of the CMC-AFT biopolymer electrolytes.

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Section: Resultssupporting

confidence: 91%

Proton-Conducting Biopolymer Electrolytes Based on Carboxymethyl Cellulose Doped with Ammonium Formate

Sohaimy

Isa

2022

Polymers

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“…5 Shows the experimental and theoretical fitting of the Nyquist plot for various samples of the CMCePVAeNH 4 NO 3-eEC. The Nyquist plots were represented by an inclined spike which indicated the presence of electrode polarization that are attributed to the diffusion process [56,57]. Furthermore, the disappearance of the semicircle may be due to the ruling effect of the resistive element of the polymer blend itself [58].…”

Section: Impedance Analysismentioning

confidence: 99%

Enhancement on protonation (H+) with incorporation of flexible ethylene carbonate in CMC–PVA–30 wt % NH4NO3 film

Saadiah

Nagao

Samsudin

2021

International Journal of Hydrogen Energy

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“…The peaks at 1060, 1320, 1420 and 1600 cm −1 were characteristic of CMC, and corresponded to C–O–C bending, –OH bending, –CH2– scissoring and asymmetric –COO– vibrations, respectively. Samsudin et al [ 38 ] reported similar CMC signature bands at 1056, 1334, 1421 and 1581 cm −1 , which were carbohydrate signature peaks, confirming the presence of carboxymethyl substituents on the CMC backbone [ 19 ]. For the PVA/CMC/ZnO NPs film, the intensities of the above FTIR peaks exceeded those observed for the pure PVA/CMC film.…”

Section: Resultsmentioning

confidence: 94%

Effects of Ultrasonication Time on the Properties of Polyvinyl Alcohol/Sodium Carboxymethyl Cellulose/Nano-ZnO/Multilayer Graphene Nanoplatelet Composite Films

Zhang

Dong

et al. 2020

Nanomaterials

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Ultrasonication-assisted solution casting was used to prepare polyvinyl alcohol (PVA)/sodium carboxymethyl cellulose (CMC)/nano-ZnO/multilayer graphene nanoplatelet (xGnP) composite films; the performances (mechanical properties, water vapor permeability (WVP), biodegradability and antibacterial activity) of these films were investigated as a function of the ZnO NPs:xGnP mass ratio and ultrasonication time. Intermolecular interactions among ZnO NPs, xGnP and the PVA/CMC matrix were shown to improve WVP, while X-ray diffraction and scanning electron microscopy analyses revealed that the internal reticular structure of ultrasound-treated PVA/CMC/ZnO NPs/xGnP composite films was in a fluffier state than that of the untreated composite films and the PVA/CMC film. The incorporation of ZnO NPs and xGnP into the composite film reduced its tensile strength and elongation at break, and increased antibacterial activity and biodegradability. In addition, we carried out the experiment of strawberry preservation and measured weight loss ratio, firmness, content of total soluble solids and titration acid. Finally, the composite film of 7:3 had the best preservation effect on strawberries. Thus, the obtained results paved the way to develop novel biodegradable composite films with antimicrobial activity for a wide range of applications.

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Structural and Ionic Transport Study on CMC Doped NH4Br: A New Types of Biopolymer Electrolytes

Cited by 67 publications

References 6 publications

Proton-Conducting Biopolymer Electrolytes Based on Carboxymethyl Cellulose Doped with Ammonium Formate

Proton-Conducting Biopolymer Electrolytes Based on Carboxymethyl Cellulose Doped with Ammonium Formate

Enhancement on protonation (H+) with incorporation of flexible ethylene carbonate in CMC–PVA–30 wt % NH4NO3 film

Effects of Ultrasonication Time on the Properties of Polyvinyl Alcohol/Sodium Carboxymethyl Cellulose/Nano-ZnO/Multilayer Graphene Nanoplatelet Composite Films

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