Evaluation of conductivity of nanostructured polyaniline/cellulose nanocrystals (PANI/CNC) obtained via in situ polymerization

Nepomuceno, Neymara C.; Seixas, Ana Amélia Aragão; Medeiros, Eliton S.; Mélo, Tomás Jefférson Alves de

doi:10.1016/j.jssc.2021.122372

Cited by 35 publications

(28 citation statements)

References 53 publications

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“…The (104) characteristic peak of Ti 3 AlC 2 at ∼39° disappears and the (002) peak shifts from 9.46 to 7.2°, indicating the successful etching of the Al layer and the increase in interlayer spacing (Figure S1c). The PANI nanowires are synthesized by a rapidly mixed reaction of the aniline monomer and the APS initiator as previously reported . The PANI nanowires are ∼1 μm in length and their diameters are in the range of 50–100 nm (Figure b,c ).…”

Section: Resultsmentioning

confidence: 99%

Functional Polyaniline/MXene/Cotton Fabrics with Acid/Alkali-Responsive and Tunable Electromagnetic Interference Shielding Performances

Liu

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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Although two-dimensional transition-metal carbides (MXenes) and intrinsic conductive polymers have been combined to produce functional electromagnetic interference (EMI) shielding composites, acid/alkali-responsive EMI shielding textiles have not been reported. Herein, electrically conductive polyaniline (PANI)/MXene/cotton fabrics (PMCFs) are fabricated by an efficient vacuum filtration-assisted spray-coating method for acid/alkali-responsive and tunable EMI shielding applications on the basis of the high electrical conductivity of MXene sheets and the acid/alkali doping/de-doping feature of PANI nanowires. The as-prepared PMCF exhibits a sensitive ammonia response of 19.6% at an ammonia concentration of 200 ppm. The high EMI shielding efficiency of ∼54 dB is achieved by optimizing the decorated structure of the PANI/MXene coating on the cotton fabrics. More importantly, the PMCF can act adaptively as a “switch” for EMI shielding between the efficient strong shielding of 24 dB and the inefficient weak shielding of 15 dB driven by the stimulation of hydrogen chloride and ammonia vapors. This multifunctional fabric would possess promising applications for intelligent garments, flexible electronic sensors, and smart electromagnetic wave response in special environments.

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Section: Resultsmentioning

confidence: 99%

Functional Polyaniline/MXene/Cotton Fabrics with Acid/Alkali-Responsive and Tunable Electromagnetic Interference Shielding Performances

Liu

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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“…These results are in keeping with literature data where the conductivity of deposited polyaniline lms have been found in the range from 10 −1 to 21 S cm −1 . 42,43 Moreover, the long-term stability is proved by the fact that the value of conductivity observed aer one year from its preparation is still consistent with that required for applications such as material for electromagnetic interference shielding, sensors and catalysis. 43 Indeed, the reduction of conductivity aer one year is imputable to the loss of the dopants used for doping PANI.…”

Section: Electrical Measurementsmentioning

confidence: 75%

A resistive sensor for humidity detection based on cellulose/polyaniline

et al. 2022

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“…PANI/RS-MC, in particular, has less prominent benzenoid and quinoid ring stretching vibrations and C-N bond stretching vibrations as compared to PANI/CLS-MC and PANI/STD-MC. This decrease in peak intensity can be attributed to the strong interfacial interaction of PANI and RS-MC [55][56][57].…”

Section: Resultsmentioning

confidence: 95%

Polyaniline/agricultural waste microcellulose composites as electrode materials for supercapacitors

Ramirez-Peñafiel¹,

Guzman²,

Perez³

et al. 2022

actamanil

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Supercapacitors are energy storage devices that employ carbon, metal oxides, and conducting polymers as electrode materials. Polyaniline (PANI) was polymerized onto microcellulose (MC) to produce an electroactive material suitable for supercapacitor electrode applications. Microcellulose was prepared from cellulose extracted from Cocos nucifera L. (coconut, CLS) leaf sheaths and Oryza sativa straw (rice, RS). Delignification and bleaching procedures yielded 45% and 28% cellulose from CLS and RS, respectively, followed by acid hydrolysis to produce MC. Acid hydrolysis of the extracted cellulose produced MC. PANI was chemically polymerized onto MC using a 50:50, 70:30, and 90:10 aniline:MC ratios. PANI/MC composites were then characterized by SEM, TGA, FTIR, four-point probe conductivity testing and cyclic voltammetry. SEM micrographs indicated the composite was composed of thin ribbonlike strands with a rough surface coating. TGA revealed that extracted cellulose (CLS -312.55 °C; RS -331.50 °C) had lower purity compared to standard cellulose (335.28 °C). FTIR spectra of the composites showed characteristic peaks of both pure PANI and MC. PANI/MC composites with 90:10 ratio gave the highest conductivity values, ranging from 36.4 µScm -1 to 39.0 µScm -1 ; and specific capacitance values of 51.2 F g -1 to 109 F g -1 at 50 mV s -1 . The results showed effective utilization of waste residues capable of increasing the potential of PANI as an electrode material for supercapacitors.

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Evaluation of conductivity of nanostructured polyaniline/cellulose nanocrystals (PANI/CNC) obtained via in situ polymerization

Cited by 35 publications

References 53 publications

Functional Polyaniline/MXene/Cotton Fabrics with Acid/Alkali-Responsive and Tunable Electromagnetic Interference Shielding Performances

Functional Polyaniline/MXene/Cotton Fabrics with Acid/Alkali-Responsive and Tunable Electromagnetic Interference Shielding Performances

A resistive sensor for humidity detection based on cellulose/polyaniline

Polyaniline/agricultural waste microcellulose composites as electrode materials for supercapacitors

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