Enhancement of Electrical and Optical Properties of Sodium Bromide Doped Carboxymethyl Cellulose Biopolymer Electrolyte Films

Shetty, Supriya K.; ISMAYIL, -; Shetty, Gowtham

doi:10.1080/00222348.2020.1711585

Cited by 31 publications

(13 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increases in the localized levels of forbidden energy band gap lead to an increase in the cases of overlaps between these levels, resulting in a decrease in the energy band gap value. The value of energy gap for CMC polymer is 5.69 eV that was matched with researches [16]. Figures (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15) to (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) show the relation between the extinction coefficient (K), refractive index (n), imaginary (ε i ) and real (ε r ) dielectric constants, respectively, of pure polymer and blend polymer films that calculated from eqs.…”

Section: Optical Propertiessupporting

confidence: 86%

“…The value of energy gap for CMC polymer is 5.69 eV that was matched with researches [16]. Figures (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15) to (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) show the relation between the extinction coefficient (K), refractive index (n), imaginary (ε i ) and real (ε r ) dielectric constants, respectively, of pure polymer and blend polymer films that calculated from eqs. (3)(4)(5)(6), respectively [39,40].…”

Section: Optical Propertiessupporting

confidence: 86%

“…The experimental results showed that the nanocomposites had good activity for antibacterial. S. K. Shetty et al 2020 [16], used different experimental techniques, the structural, optical and electrical properties of CMC/Sodium Bromide (NaBr) films were analyzed to understand the effect of sodium metal salt on the properties of the biopolymer CMC. A major difference in the metal salt concentration was seen in the optical bandgap energy and refractive index.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Structural and Optical Characteristics of Carboxymethylcellulose / Polyacrylic Acid Polymer Blend

Jawad¹,

Kadhemy

2021

JK-Physics

View full text Add to dashboard Cite

The blending technology makes it possible to rebuild high molecular weights of partial polymers, thus to improve the product performance together with improvement of specific properties. Pure Carboxymethylcellulose (CMC) film and CMC (80%) doped Polyacrylic Acid (PAA) (20%) films were prepared by using a solution casting method. The influence of PAA polymer addition on the structural and optical properties of CMC polymer was investigated systematically. From X-ray diffraction patterns, adding a polymer PAA to a polymer CMC can lead to the appearance of peaks in polymer blend. FESEM image for CMC/ PAA film showed the formation of small spherical grains for PAA into CMC that insured the existence of some peaks in XRD pattern of PAA in CMC film which means the improvement of the microstructure of the polymer matrix. No chemical interactions were observed between CMC and PAA polymers from results of FTIR spectrum, so that incorporation of PAA into CMC polymer will results physical reaction only. The results of the UV spectrum have shown that the absorbance, absorption coefficient, extinction coefficient, refractive index, real and imaginary dielectric constants were increased in blend polymer compared with the pure polymer. The energy gap and transmittance of blend polymer compared with the pure polymer were reduced.

show abstract

Section: Optical Propertiessupporting

confidence: 86%

Section: Optical Propertiessupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structural and Optical Characteristics of Carboxymethylcellulose / Polyacrylic Acid Polymer Blend

Jawad¹,

Kadhemy

2021

JK-Physics

View full text Add to dashboard Cite

show abstract

“…49 To understand the factors that influence the crystallinity of the polymer electrolyte, the degree of crystallinity (χ c ) was evaluated, as reported in our earlier work. 50 In the case of the NaAlg− NaClO 4 system, the peak intensity at 2θ = 13°(corresponding to the crystalline characteristic) is observed to decrease significantly with increasing salt concentration due to the interaction of the ClO 4…”

Section: X-ray Diffractionmentioning

confidence: 95%

Deciphering the Effect of Microstructural Modification in Sodium Alginate-Based Solid Polymer Electrolyte by Unlike Anions

Shetty,

Ismayil,

Mohd Noor

et al. 2023

ACS Omega

View full text Add to dashboard Cite

Microstructure modification in sodium alginate (NaAlg)based solid polymer electrolytes by the perchlorate (ClO 4 − ) and acetate (CH 3 COO − ) anions of sodium salts has been reported. ClO 4 − participates in the structure-breaking effect via inter/intramolecular hydrogen bond breaking, while CH 3 COO − changes the amorphous phase, as evident from X-ray diffraction studies. The larger size and negative charge delocalization of ClO 4− have a plasticizing effect, resulting in a lower glass transition temperature (T g ) compared to CH 3 COO − . Decomposition temperature is strongly dependent on the type of anion. Scanning electron microscopy images showed divergent modifications in the surface morphology in both electrolyte systems, with variations in salt content. The mechanical properties of the NaAlg−NaClO 4 electrolyte systems are better than those of the NaAlg−CH 3 COONa system, indicating weak interactions in the latter. Although most of the studies focus on the cation influence on conductivity, the interaction of the anion and its size certainly have an influence on the properties of solid polymer electrolytes, which will be of interest in the near future for sodium ionbased electrolytes in energy storage devices.

show abstract

“…Salehan et al [ 14 ] reported that the loading of 2 wt.% aluminium oxide (Al 2 O 3 ) into a corn starch (CS):lithium iodide (LiI) provided a conductivity of (6.73 ± 0.78) × 10 –4 S/cm. Shetty et al [ 15 ] documented that the loading of 20 wt.% sodium bromide (NaBr) into carboxymethyl cellulose (CMC) provided a conductivity of ~5.15 × 10 –4 S/cm.…”

Section: Introductionmentioning

confidence: 99%

Impedance, Electrical Equivalent Circuit (EEC) Modeling, Structural (FTIR and XRD), Dielectric, and Electric Modulus Study of MC-Based Ion-Conducting Solid Polymer Electrolytes

et al. 2021

View full text Add to dashboard Cite

The polymer electrolyte system of methylcellulose (MC) doped with various sodium bromide (NaBr) salt concentrations is prepared in this study using the solution cast technique. FTIR and XRD were used to identify the structural changes in solid films. Sharp crystalline peaks appeared at the XRD pattern at 40 and 50 wt.% of NaBr salt. The electrical impedance spectroscopy (EIS) study illustrates that the loading of NaBr increases the electrolyte conductivity at room temperature. The DC conductivity of 6.71 × 10−6 S/cm is obtained for the highest conducting electrolyte. The EIS data are fitted with the electrical equivalent circuit (EEC) to determine the impedance parameters of each film. The EEC modeling helps determine the circuit elements, which is decisive from the engineering perspective. The DC conductivity tendency is further established by dielectric analysis. The EIS spectra analysis shows a decrease in bulk resistance, demonstrating free ion carriers and conductivity boost. The dielectric property and relaxation time confirmed the non-Debye behavior of the electrolyte system. An incomplete semicircle further confirms this behavior model in the Argand plot. The distribution of relaxation times is related to the presence of conducting ions in an amorphous structure. Dielectric properties are improved with the addition of NaBr salt. A high value of a dielectric constant is seen at the low frequency region.

show abstract

Enhancement of Electrical and Optical Properties of Sodium Bromide Doped Carboxymethyl Cellulose Biopolymer Electrolyte Films

Cited by 31 publications

References 18 publications

Structural and Optical Characteristics of Carboxymethylcellulose / Polyacrylic Acid Polymer Blend

Structural and Optical Characteristics of Carboxymethylcellulose / Polyacrylic Acid Polymer Blend

Deciphering the Effect of Microstructural Modification in Sodium Alginate-Based Solid Polymer Electrolyte by Unlike Anions

Impedance, Electrical Equivalent Circuit (EEC) Modeling, Structural (FTIR and XRD), Dielectric, and Electric Modulus Study of MC-Based Ion-Conducting Solid Polymer Electrolytes

Contact Info

Product

Resources

About