Recent progress in conductive polymeric materials for biomedical applications

Nair, Sarita S.; Mishra, Subhajit; Kumar, Devendra

doi:10.1002/pat.4725

Cited by 40 publications

(39 citation statements)

References 103 publications

(111 reference statements)

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“…CNTs are grown on an alumina plate using nickel catalyst inside a chemical vapor deposition (CVD) reactor (Technos Instruments, India) as per the growth protocol described in Supporting Information Figure S1 . The CVD grown CNTs are called as‐grown CNTs.…”

Section: Methodsmentioning

confidence: 99%

Quantification of carbon nanotube dispersion and its correlation with mechanical and thermal properties of epoxy nanocomposites

Tiwari

Billing

Bedi

et al. 2019

J of Applied Polymer Sci

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An experimental study is carried out to quantitatively assess the dispersion quality of carbon nanotubes (CNTs) in epoxy matrix as a function of CNT variant and weight fraction. To this end, two weight fractions (0.05% and 0.25%) of as-grown, oxidized, and functionalized CNTs are used to process CNT/epoxy nanocomposites. Scanning electron microscopy, X-ray diffraction, and Fourier transform infrared analysis of different variants of CNTs are used to establish the efficiency of purification route. While the relative change in mechanical properties is investigated through tensile and micro-hardness testing, thermal conductivity of different nanocomposites is measured to characterize the effect of CNT addition on the average thermal properties of epoxy. Later on, a quantitative analysis is carried out to establish the relationship between the observed improvements in average composite properties with the dispersion quality of CNTs in epoxy. It is shown that carboxylic (-COOH) functionalization reduces the average CNT agglomerate size and thus ensures better dispersion of CNTs in epoxy even at higher CNT weight fraction. The improved dispersion leads to enhanced interfacial interaction at the CNT/epoxy interface and hence provides higher relative improvement in nanocomposite properties compared to the samples prepared using as-grown and oxidized CNTs.

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Section: Methodsmentioning

confidence: 99%

Quantification of carbon nanotube dispersion and its correlation with mechanical and thermal properties of epoxy nanocomposites

Tiwari

Billing

Bedi

et al. 2019

J of Applied Polymer Sci

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“…Nevertheless, the emergence of conducting polymers (CPs) in 1976 has developed enormous opportunities for the development of polymers with unique properties 1,2 . CPs are organic materials that exhibit mechanical and physical properties related to conventional polymers and the unique electrical properties of metals 3‐5 . CPs belong to a class of polymers that can inherently conduct electricity attributed to conjugation structures (ie, having π‐electron delocalization) in their polymeric backbone 6‐9 …”

Section: Introductionmentioning

confidence: 99%

Synthesis and factor affecting on the conductivity of polypyrrole: a short review

Pang

Arsad

Ahmadipour

2020

Polymers for Advanced Techs

166

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Polypyrrole (PPy) has unique features such as easy synthesis, environmental stability, and high electrical conductivity (approximately 105 S/cm and even >380 S/cm) for bulk and thin‐film materials. Thus, PPy is applied in numerous well‐established applications, such as in sensors, supercapacitors, and resonators. These applications take advantage of the unique properties achieved through the structure and properties of PPy. This article comprehensively elaborates the methods used to synthesize conductive PPy, along with the important factors affecting its conductivity. Emphasis is given to versatile and basic approaches that enable control of the microstructural features that eventually determine PPy conductivity. Despite the intensive research in this area, no previous study has presented all possible relevant information about PPy fabrication and the important factors influencing its electrical conductivity.

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“…Conducting polymers (CPs) continue to be the center of intensive scientific research due to their unique properties (tunable band gap, redox properties, protection against corrosion and low cost) [1,2]. These characteristics have allowed the development of many technological applications [3], from organic and molecular electronic [4,5] to sensors [6][7][8] or smart surfaces [9][10][11][12][13]. Among many types of CPs, poly(thienyl-pyrrole-thienyl) derivatives have received great interest [14][15][16][17][18] especially for their electrochromic properties [19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Dithienylpyrrole Electrografting on a Surface through the Electroreduction of Diazonium Salts

et al. 2020

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The control of the interface and the adhesion process are key issues for the development of new application based on electrochromic materials. In this work the functionalization of an electrode’s surface through electroreduction of diazonium generated in situ from 4-(2,5-di-thiophen-2-yl-pyrrol-1-yl)-phenylamine (SNS-An) has been proposed. The synthesis of the aniline derivative SNS-An was performed and the electrografting was investigated by cyclic voltammetry on various electrodes. Then the organic thin film was fully characterized by several techniques and XPS analysis confirms the presence of an organic film based on the chemical composition of the starting monomer and allows an estimation of its thickness confirmed by AFM scratching measurements. Depending on the number of electrodeposition cycles, the thickness varies from 2 nm to 10 nm, which corresponds to a few grafted oligomers. In addition, the grafted film showed a good electrochemical stability depending on the scan rates up to 400 V/s and the electrochemical response of the modified electrode towards several redox probes showed that the attached layer acts as a conductive switch. Therefore, the electrode behaves as a barrier to electron transfer when the standard redox potential of the probe is below the layer switching potential, whereas the layer can be considered as transparent towards the electron transfer for redox probes with a redox potential above it.

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Recent progress in conductive polymeric materials for biomedical applications

Cited by 40 publications

References 103 publications

Quantification of carbon nanotube dispersion and its correlation with mechanical and thermal properties of epoxy nanocomposites

Quantification of carbon nanotube dispersion and its correlation with mechanical and thermal properties of epoxy nanocomposites

Synthesis and factor affecting on the conductivity of polypyrrole: a short review

Dithienylpyrrole Electrografting on a Surface through the Electroreduction of Diazonium Salts

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