Freestanding electrically conducting flexible membranes based on novel chitosan/PANI/rGO nanocomposites

Aswathy, N. R.; Palai, Akshaya K.; Mohanty, Smita; Nayak, Sagar Kumar

doi:10.1016/j.matlet.2019.126777

Cited by 21 publications

(4 citation statements)

References 14 publications

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“…In this wavenumber region, the peak at 1582 cm -1 is attributed to the N-H stretching vibrations for CNDs powder, confirming the presence of nitrogen-containing functional groups on the CNDs. 5,39,40 With the formation of CNDs thin film, the FTIR of DF-CNDs shows a band around 1541 cm -1 which is ascribed to the N-H in-plane bending of amide II. 41 The band around 1606 cm -1 is attributed to the C=O stretching vibrations (carbonyl group).…”

Section: Resultsmentioning

confidence: 99%

Crosslinked Carbon Nano Dots Membranes for Organic Solvent Nanofiltration

Abbaszadeh¹,

Atkinson²,

Trinh³

et al. 2021

Preprint

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We report a facile synthesis strategy of a membrane active layer consisting of crosslinked carbon nano dots through a layer-by-layer process and the application of these membranes in organic solvent nanofiltration. The synthesized membrane is stable in organic solvents for a long duration, displays tight molecular weight cut off, and fluoresces under UV light, allowing one to capture mechanical failure.

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Section: Resultsmentioning

confidence: 99%

Crosslinked Carbon Nano Dots Membranes for Organic Solvent Nanofiltration

Abbaszadeh¹,

Atkinson²,

Trinh³

et al. 2021

Preprint

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show abstract

“…On the log-log scale, the curve at the low voltage region of the HRS showed a linear relationship, signifying Ohmic conduction, whereas the slope of the I-V curve increased to 2 or exceeded 2 at the high voltage region, which revealed trap-free or trap-limited SCLC [24,41]. Because CCS behaved like an insulator [42][43][44][45], the fitting curves on experimental data further confirmed that the conduction mechanisms might be attributed to charge trapping-detrapping in the CCS:GQDs nanocomposite film. At a lower voltage, charge transport was limited on account of the insulating barrier provided by the CCS matrix, and GQDs captured the injected charge from the electrode.…”

Section: N-h (Amine Ii) C-o-c νN-h (Amine Ii) (Cm −1 )mentioning

confidence: 98%

Biomemristic Behavior for Water-Soluble Chitosan Blended with Graphene Quantum Dot Nanocomposite

2020

Nanomaterials

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Bionanocomposite has promising biomemristic behaviors for data storage inspired by a natural biomaterial matrix. Carboxylated chitosan (CCS), a water-soluble derivative of chitosan avoiding the acidic salt removal, has better biodegradability and bioactivity, and is able to absorb graphene quantum dots (GQDs) employed as charge-trapping centers. In this investigation, biomemristic devices based on water-soluble CCS:GQDs nanocomposites were successfully achieved with the aid of the spin-casting method. The promotion of binary biomemristic behaviors for Ni/CCS:GQDs/indium-tin-oxide (ITO) was evaluated for distinct weight ratios of the chemical components. Fourier transform infrared spectroscopy, Raman spectroscopy (temperature dependence), thermogravimetric analyses and scanning electron microscopy were performed to assess the nature of the CCS:GQDs nanocomposites. The fitting curves on the experimental data further confirmed that the conduction mechanism might be attributed to charge trapping–detrapping in the CCS:GQDs nanocomposite film. Advances in water-soluble CCS-based electronic devices would open new avenues in the biocompatibility and integration of high-performance biointegrated electronics.

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“…This biopolymer presents different degrees of deacetylation, which allow it to be soluble in an aqueous acidic solution. [1][2][3][4][5] It is a non-polluting and nontoxic polysaccharide with antibacterial, biodegradable, and filmogenic properties. [6][7][8][9] These properties lead it to a wide range of applications in diverse areas, such as an encapsulating agent for controlled release systems, an antimicrobial agent, a chelating agent in water treatment, a treatment of wound healing, and a drug delivery system.…”

Section: Introductionmentioning

confidence: 99%

“…When Cs and PANI are mixed, this advantage is incorporated into the blends: The rapid PANI electrical response. 24 Previous studies 1,19 tried unsuccessfully to obtain Cs/PANI flexible films. Plasticizers are widely used as polymeric additives, which improve flexibility, permeability, and mechanical properties such as tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Effect of glycerol on electrical conducting of chitosan/polyaniline blends

Oliveira

Santos

Ugucioni

et al. 2021

J of Applied Polymer Sci

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Chitosan (Cs) and polyaniline (PANI) were studied in this article for possible application as conductive and flexible films. Cs is a biodegradable polymer, that presents interesting properties as film applications. Otherwise, PANI is a semiconductor polymer with a wide range of applications. The films were produced by casting adding 30% glycerol and glutaraldehyde. The morphology, thermally, chemical structure, and electrical properties of films were obtained.Results showed the casting technique becomes possible to obtain self-standing films, with a chemical structure identical to precursor materials. Glutaraldehyde reacted to amine groups of terminal PANI chains, acting in the increase of electric conductivity and decrease of sheet resistance. The plasticizing effect of glycerol increased the spacing between Cs chains and facilitated the PANI dispersion. Therefore, glycerol and glutaraldehyde proved to be extremely efficient in increasing the electrical conductivity of blends.

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Freestanding electrically conducting flexible membranes based on novel chitosan/PANI/rGO nanocomposites

Cited by 21 publications

References 14 publications

Crosslinked Carbon Nano Dots Membranes for Organic Solvent Nanofiltration

Crosslinked Carbon Nano Dots Membranes for Organic Solvent Nanofiltration

Biomemristic Behavior for Water-Soluble Chitosan Blended with Graphene Quantum Dot Nanocomposite

Effect of glycerol on electrical conducting of chitosan/polyaniline blends

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