Singlewall carbon nanotubes covered with polypyrrole nanoparticles by the miniemulsion polymerization

Ham, Hyeong Taek; Choi, Yeong Suk; Jeong, Namjo; Chung, In Jae

doi:10.1016/j.polymer.2005.05.062

Cited by 112 publications

(63 citation statements)

References 33 publications

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“…Nevertheless, considering the typical aspect ratios of CNTs (length/diameter) encapsulation by miniemulsion polymerization seems to be quite difficult; it would be like trying to introduce a baseball bat into a baseball ball. Reports have shown that in composites obtained via miniemulsion polymerization, the interaction between CNTs and polymer particles has been basically the adhesion of the polymer particles along the surface of the CNTs [Ghaderi et al 2006, Vandesvorst et al 2006, Ham et al 2005. Therefore, miniemulsion polymerization or even conventional emulsion polymerization seems to be not the proper techniques to encapsulate CNTs; thus, some other options should be explored (Xie et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Incorporation of multi-walled carbon nanotubes in microspheres used as anion exchange resin via suspension polymerization

Fathy¹,

Moghny²,

Awadallah³

et al. 2013

Appl Nanosci

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Amination of vinylbenzyl chloride-divinylbenzene (VBC-DVB) copolymers is an effective method for preparation of anion-exchange resins. Conventionally, the starting polymer is produced by chloromethylation of a styrene-divinylbenzene copolymer that utilizes chloromethyl methyl ether, a known carcinogen. An alterative approach is to copolymerize vinylbenzyl chloride with divinylbenzene to generate the necessary VBC-DVB. This method provides precise control over the density of the ionexchange groups. The regiochemistry of the vinylbenzyl chloride methods was realized using solvent-ion exchange groups. These resulting anion-exchange polymers were characterized by a variety of techniques such as analytical titrations, transform infrared spectroscopy and thermal gravimetric analysis. Testing of these copolymers for breakthrough was performed. The results indicate that these anion exchangers have a meaningful increase in thermal stability over commercial anionic exchange beads. Resins containing MWCNTs achieved anion exchange capacity value of 323.6 meq/100 g over than that of copolymer resins and that useful in water desalination or treatment.

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Section: Introductionmentioning

confidence: 99%

Incorporation of multi-walled carbon nanotubes in microspheres used as anion exchange resin via suspension polymerization

Fathy¹,

Moghny²,

Awadallah³

et al. 2013

Appl Nanosci

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“…Thus the conducting polypyrrole interacts with side walls of the CNTs and a coating of conducting polymer on CNTs has been formed. During the last two decades, a significant number of investigations 3 have been made to explore the properties of polypyrrole-MWCNT composites [24][25][26][27][28][29][30][31][32][33][34][35]. But most of them have given stress on different types of preparation technique and characterization of the composites.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, electrical and magnetotransport properties of polypyrrole-MWCNT nanocomposite

Chakraborty

Gupta

Meikap

et al. 2012

Solid State Communications

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The present work describes the preparation of nanocomposites in which the multiwall carbon nanotubes (MWCNT) have been mixed with conducting polypyrrole (PPy) via an in situ chemical oxidative preparation method. To reveal their structural, morphological and thermal properties, the composites have been characterized by x-ray diffraction, field emission scanning electron microscope, Fourier transform infrared, thermogravimetric analysis respectively. Electrical transport and magnetotransport properties have been investigated in the temperature range 77-300K in presence as well as in absence of magnetic field up to 1Tesla. The conductivities of the composites are greater than that of pure polypyrrole. All the investigated samples follow Mott's variable range hopping (VRH) theory whereas the magnetic field dependent conductivity have been explained in terms of two opposite but simultaneously acting hopping effect-wave function shrinkage and forward interference effect.

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“…Nevertheless, considering the typical aspect ratios of CNTs (length/ diameter) encapsulation by miniemulsion polymerization seems to be quite difficult; it would be like trying to introduce a baseball bat into a baseball ball. Reports have shown that in composites obtained via miniemulsion polymerization, the interaction between CNTs and polymer particles has been basically the adhesion of the polymer particles along the surface of the CNTs (Park et al 2005;Vandesvorst et al 2006;Ham et al 2005). Therefore, miniemulsion polymerization or even conventional emulsion polymerization seems to be not the proper techniques to encapsulate CNTs; thus, some other options should be explored (Xie et al 2005).We consider improvements of polystyrene divinylbenzene (PS-DVB) by adding CNTs, which might bring superior thermal stability, high strength, and flexibility.…”

Section: Introductionmentioning

confidence: 99%

Cation exchange resin nanocomposites based on multi-walled carbon nanotubes

et al. 2012

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Carbon nanotubes (CNTs) are of great interest due to their potential applications in different fields such as water treatment and desalination. The increasing exploitation of multi-walled carbon nanotubes (MWCNTs) into many industrial processes has raised considerable concerns for environmental applications. The interactions of soluble salt with MWNCTs influence in the total salt content in saline water. In this work, we synthesized two cation exchange resins nano composites from polystyrene divinylbenzene copolymer (PSDVB) and pristine MWNCTs. The prepared compounds were characterized using infra red spectroscopy, thermal stability, X-ray diffraction, and electro scan microscope. Also, the ion capacities of prepared cation exchange resins were determined by titration. Based on the experimental results, it was found that the thermal stability of prepared nanocomposites in the presence of MWNCTs increased up to 617°C. The X-ray of PSDVB and its sulfonated form exhibits amorphous pattern texture structure, whereas the nano composite exhibits amorphous structure with indication peak at 20°and 26°for the PSDVB and MWCNTs, respectively. The ion-exchange capacity increased from 225.6 meq/100 g to 466 mg/100 g for sulfonated PSDVB and sulfonated PSDVB MWNCTs-pristine, respectively.

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Singlewall carbon nanotubes covered with polypyrrole nanoparticles by the miniemulsion polymerization

Cited by 112 publications

References 33 publications

Incorporation of multi-walled carbon nanotubes in microspheres used as anion exchange resin via suspension polymerization

Incorporation of multi-walled carbon nanotubes in microspheres used as anion exchange resin via suspension polymerization

Synthesis, electrical and magnetotransport properties of polypyrrole-MWCNT nanocomposite

Cation exchange resin nanocomposites based on multi-walled carbon nanotubes

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