Fabrication of MWNTs/nylon conductive composite nanofibers by electrospinning

Jeong, Jaemin; Jeon, Seong-Jae; Lee, T.Y.; Park, J.H.; Shin, Jungyeop; Alegaonkar, P.S.; Berdinsky, A.S.; Yoo, Ji‐Beom

doi:10.1016/j.diamond.2006.08.026

Cited by 82 publications

(48 citation statements)

References 18 publications

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“…[39][40][41] However, after reaction with the polyamines, the obtained MWNTs-PA (Figure 3a(3-8)) were not dispersible in any of the tested solvents after 30 min sonication, namely, deionized water, acid water (0.5 M HCl), DMF, THF, toluene, and CHCl 3 , while the pure polyamines are readily soluble in acidic water and the organic solvents mentioned here. Thus, the decrease in dispersibility after reaction clearly supports the fact that the polyamines were responsible for the cross-linking within or between the bundles of MWNTs.…”

Section: Resultsmentioning

confidence: 99%

Cross-Linking of Multiwalled Carbon Nanotubes with Polymeric Amines

et al. 2008

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Functionalization of carbon nanotubes is considered as an essential step to enable their manipulation and application in potential end-use products. In this paper we introduce a new approach to functionalize multiwalled carbon nanotubes (MWNTs) by applying an amidation-type grafting reaction with amino-functionalized alternating polyketones. The functionalized MWNTs were characterized by using thermogravimetric analysis (TGA), X-ray photoemission spectroscopy (XPS), element analysis, Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Around 40 wt % polyamines based on the total weight of the MWNTs can be covalently attached to the surface of the MWNTs. It is found that polyamines act as crosslinking agents to interconnect or cross-link the MWNTs within and between bundles, as demonstrated by SEM and TEM analysis. After cross-linking, the functionalized MWNTs are insoluble in any solvent. The cross-linked MWNTs can be melt-blended into polyethylene, and the resulting composites show comparable mechanical properties to those obtained by simple blending of "un-cross-linked" nanotubes with polyethylene.

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Section: Resultsmentioning

confidence: 99%

Cross-Linking of Multiwalled Carbon Nanotubes with Polymeric Amines

et al. 2008

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“…Chronakis et al [58] fabricated the conductive polypyrrole nanofiber with diameters in the range of 70-300 nm. Jeong et al [109] fabricated MWCNT/nylon composite nanofibers and tested their I-V performance. Zhang et al [43] also spinned nanofibres with diameter with ~100 nm and aligned across the gap between the parallel electrodes.…”

Section: Figure 21mentioning

confidence: 99%

Inkjet printing for flexible electronics: Materials, processes and equipments

et al. 2010

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Inkjet printing, known as digital writing technique, can directly deposit functional materials to form pattern onto substrate. This paper provides an overview of inkjet printing technologies for flexible electronics. Firstly, we highlight materials challenges in implementing flexible devices into practical application, especially for inkjet printing process. Then the micro/nano-patterning technologies of inkjet printing are discussed, including conventional inkjet printing techniques and electrohydrodynamic printing techniques. Thirdly, the related equipments on inkjet printing are shown. Finally, challenges for its future development are also discussed. The main purpose of the work is to condense the basic knowledge and highlight the challenges associated with the burgeoning and exciting field of inkjet printing for flexible electronics.flexible electronics, nanomanufacturing, organic thin film transistor, micro/nano-patterning, inkjet printing, electrohydynamics, roll-to-roll Citation: Overview of flexible electronics technologyFlexible electronics, also known as printable/organic electronics, represent a technology for building electronic circuits by depositing electronic devices onto flexible substrates. Realization of flexible electronics with performance equal to conventional microelectronics built on brittle semiconductor wafers, but in high mobilities, optical transparency, light-weight, stretchable/bendable formats and easy to print rapidly over large areas would enable many new applications [1-4] not satisfied by a traditional rigid electronics. The applications vary from medicine and biology to energy technology and space science [1,2], such as flexible display [4,5], thin film solar cell [6,7], large area sensors and actuators [8,9], shown in Figure 1. These applications are based on thin film transistors (TFTs) which have strong materials and processes contents. Flexible electronics *Corresponding authors (have open boundaries that move with its development and applications and is a highly interdisciplinary field. As a result, there are considerable opportunities for innovation and basic scientific research into new types of electronic materials, processes and equipments.The flexibility, a critical issue in flexible electronics, is one of the most important differences from traditional microelectronics. Polymer organics and inorganic materials are the two kind of materials adopted in flexible electronics. The polymer organics are generally believed to be well suited for these applications and naturally compatible with polymeric substrates. However, the electrical properties is not ideal when devices are fabricated with polymer organics. This leads to interest in the possibility of inorganic based flexible electronics [10]. It is a challenge to design a bendable and stretchable electronics based on inorganic materials due to their small fracture strain. The most basic realization is thin films of the inorganics are adopted as semiconductors, conductors and/or insulators on substrates to mini-

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“…Another simple possibility to obtain conductive nanofibers is to electrospin a polymer solution containing conductive additives (metallic nanoparticles, carbon nanotubes, etc. ); [18][19][20] here the conductivity is a function of the Conductive Polyamide 6 (PA-6) nanofibers were prepared by making a conductive polypyrrole coating obtained by a polymerization of pyrrole molecules directly on the fiber surface. A solution of PA-6 added with ferric chloride in formic acid has been electrospun and the fibers obtained showed an average diameter of 260 nm with a smooth surface.…”

Section: Introductionmentioning

confidence: 99%

Composite Polyamide 6/Polypyrrole Conductive Nanofibers

Granato

Bianco

Bertarelli

et al. 2009

Macromol. Rapid Commun.

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Conductive Polyamide 6 (PA-6) nanofibers were prepared by making a conductive polypyrrole coating obtained by a polymerization of pyrrole molecules directly on the fiber surface. A solution of PA-6 added with ferric chloride in formic acid has been electrospun and the fibers obtained showed an average diameter of 260 nm with a smooth surface. The fibers have been then exposed to pyrrole vapours and a compact coating of polypyrrole was formed on the fiber surface. The growth of the coating was monitored by measuring the increment of the fiber diameter and by FT-IR spectroscopy. The same technique was used to study the interaction between the ferric chloride and the polyamide chains. The polypyrrole coating on the fibers turned out to be conductive with a pure resistive characteristic and the stability of the conductivity was evaluated in air at room temperature.

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Fabrication of MWNTs/nylon conductive composite nanofibers by electrospinning

Cited by 82 publications

References 18 publications

Cross-Linking of Multiwalled Carbon Nanotubes with Polymeric Amines

Cross-Linking of Multiwalled Carbon Nanotubes with Polymeric Amines

Inkjet printing for flexible electronics: Materials, processes and equipments

Composite Polyamide 6/Polypyrrole Conductive Nanofibers

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