Vapor phase polymerization of polyaniline nanotubes using Mn 3 O 4 nanofibers as an oxidant

Jun, Tae-Sun; Kim, Chi-Kwan; Kim, Yong Shin

doi:10.1016/j.matlet.2014.06.154

Cited by 10 publications

(4 citation statements)

References 17 publications

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“…Vapor-phase polymerization is one of the self-assembling techniques that do not require a host polymer. It utilizes the organic arrangement of macro molecules to fabricate nanolayered aggregates and thin films [80,81]. There are also reports on the preparation of nanostructured PANI through polymerization in the presence of functionalized protonic acid, which acts as both surfactant (and emulsifier) and protonating agent.…”

Section: Pani Nanostructuresmentioning

confidence: 99%

A Review of Electrospun Conductive Polyaniline Based Nanofiber Composites and Blends: Processing Features, Applications, and Future Directions

Razak

Wahab

Fadil

et al. 2015

Advances in Materials Science and Engineering

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Electrospun polymer nanofibers with high surface area to volume ratio and tunable characteristic are formed through the application of strong electrostatic field. Electrospinning has been identified as a straight forward and viable technique to produce nanofibers from polymer solution as their initial precursor. These nanofiber materials have attracted attention of researchers due to their enhanced and exceptional nanostructural characteristics. Electrospun polyaniline (PANI) based nanofiber is one of the important new materials for the rapidly growing technology development such as nanofiber based sensor devices, conductive tissue engineering scaffold materials, supercapacitors, and flexible solar cells applications. PANI however is relatively hard to process compared to that of other conventional polymers and plastics. The processing of PANI is daunting, mainly due to its rigid backbone which is related to its high level of conjugation. The challenges faced in the electrospinning processing of neat PANI have alternatively led to the development of the electrospun PANI based composites and blends. A review on the research activities of the electrospinning processing of the PANI based nanofibers, the potential prospect in various fields, and their future direction are presented.

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Section: Pani Nanostructuresmentioning

confidence: 99%

A Review of Electrospun Conductive Polyaniline Based Nanofiber Composites and Blends: Processing Features, Applications, and Future Directions

Razak

Wahab

Fadil

et al. 2015

Advances in Materials Science and Engineering

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“…Nanofibers are at the forefront of fibrous materials, given their high aspect ratio, superfine diameter, high strength and high absorption, , which allows for their assembly into three-dimensional (3D) nanofiber aerogels (NFAs). Several methods have been developed for the preparation of nanofibers, including electrospinning, − melt blowing, , polymerization, , phase separation, , and melt blending extrusion. , Thermoplastic polymer nanofibers–poly(vinyl alcohol- co -ethylene) (EVOH) nanofibers, prepared by melt extrusion, were selected as the building blocks because of their abrasion resistance, biodegradability, biocompatibility, good processability, low cost, and nontoxicity to humans. , To the best of our knowledge, the thermoplastic polymer NFAs have not been previously reported in the literature. The EVOH NFAs were produced from the precursor EVOH nanofibers suspension using a gelation-free and facile freeze-drying process.…”

Section: Introductionmentioning

confidence: 99%

Superoleophilic and Flexible Thermoplastic Polymer Nanofiber Aerogels for Removal of Oils and Organic Solvents

Wei

et al. 2017

ACS Appl. Mater. Interfaces

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Chemical cross-linked poly(vinyl alcohol-co-ethylene) (EVOH) nanofiber aerogels (NFAs) were fabricated employing an economical and facile freeze-drying process. The manufactured chemical cross-linking nanofiber aerogel was successfully confirmed by scanning electron microscopy, attenuated total reflection-Fourier transform infrared spectrometer, and X-ray diffraction. The resulting aerogels showed high porosity (>99%), superior elasticity, elastic durability, high hydrophobicity, and superoleophilicity without any other hydrophobic modification. The cross-linked EVOH NFAs exhibited excellent absorption capacity (ranging from 45 to 102 times their own weight) when exposed to various oils and organic solvents, which was observed to be higher than that for most sorbents reported in the literature. Consequently, it is envisaged that the cross-linked EVOH NFA would play an important role in many fields of pollution removal.

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“…Subsequently, vapor-phase polymerization (VPP) (Figure d) was conducted using the oxidant containing PVDF NFs mat as substrate. It is noteworthy that the VPP is a simple and effective method that allows polymerization from the conversion of aniline monomer, avoiding other cumbersome techniques. , Briefly, in the VPP process, any type of substrate is first absorbed with an oxidant (as described above). Then the oxidant-coated substrate (here, the as-prepared oxidant containing yellowish PVDF NFs mat) is exposed to the monomer (aniline in this case) vapor inside a tightly closed container kept upon a hot plate (Figure d).…”

Section: Resultsmentioning

confidence: 99%

Self-Powered Human-Health Monitoring through Aligned PVDF Nanofibers Interfaced Skin-Interactive Piezoelectric Sensor

Maity

Garain

Henkel

et al. 2020

ACS Appl. Polym. Mater.

172

117

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Flexible and wearable e-skin sensors are attracting a great interest for their smart sensing applications in next-generation electronics. However, implant ability, sensitivity, and biosignal detection capability in a self-powered manner are the prime concerns in embedded devices. In particular, electrode compatibility and imperishability have become challenging issues in wearable sensors due to the poor compatibility and fragileness of metal electrodes. In this context, we report on a skin-interactive metal-free spongy electrode in a piezoelectric sensor where highly aligned poly(vinylidene fluoride) (PVDF) nanofibers (NFs) arrays are introduced as the piezoelectric active component and conducting polyaniline- (PANI-) coated PVDF (PANI–PVDF) NFs mats served as flexible electrodes. Notably, a 99% yield of piezoelectric phases of the aligned PVDF arrays is the key factor to exhibit promising mechano-sensitivity (0.8 V/kPa) performance that in turn helps in human-health monitoring. The sensor shows excellent mechanical to electrical energy conversion that enable to sense human finger touch (10 V under 10 kPa) with energy conversion efficiency of 53%. Most importantly, due to the compatible electrodes excellent mechanical stability has been found showing negligible degradation over 12,000 periodic cycles. Furthermore, under mechanical stimuli, it is also possible to charge up a capacitor (1 μF) to 4 V within 60 s confirming the possibility to use the device as a self-powered piezo-organic-e-skin sensor (POESS). This type of structural design enables to trace elusive movement of muscles and the operation in several conditions such as bending, compression and stretching. We demonstrated various human gestures monitoring, such as wrist bending, neck stretching, and arm compressions, throat movements during drinking water, coughing actions, and swallowing. In addition, diverse specific phonation recognition, heart-pulse measurement and its respective short-time Fourier transform (STFT) analysis indicate an efficient and convenient way of monitoring human-health status particularly in hospital-free mode.

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Vapor phase polymerization of polyaniline nanotubes using Mn 3 O 4 nanofibers as an oxidant

Cited by 10 publications

References 17 publications

A Review of Electrospun Conductive Polyaniline Based Nanofiber Composites and Blends: Processing Features, Applications, and Future Directions

A Review of Electrospun Conductive Polyaniline Based Nanofiber Composites and Blends: Processing Features, Applications, and Future Directions

Superoleophilic and Flexible Thermoplastic Polymer Nanofiber Aerogels for Removal of Oils and Organic Solvents

Self-Powered Human-Health Monitoring through Aligned PVDF Nanofibers Interfaced Skin-Interactive Piezoelectric Sensor

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