Incorporation of multiwalled carbon nanotubes on the surface of polystyrene microspheres via In Situ suspension polymerization

Bak, Hyeonseong; Yun, Young Soo; Cho, Se Youn; Kang, Min Ki; Jin, Hyoung‐Joon

doi:10.1007/s13233-011-0310-5

Cited by 9 publications

(6 citation statements)

References 28 publications

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“…The polymerization products were rinsed with ethanol and centrifuged repeatedly to remove any non-reacted styrene and HB. The PS microspheres were then dried in a vacuum oven at room temperature for 48 h (Bak et al 2011;Al-Sabti et al 2007). …”

Section: Synthesis Of Polystyrene (Ps)mentioning

confidence: 99%

“…Then the beads were extracted with toluene for 48 hours. After washing and drying, the resulting particle size of the stationary phase was about 20 Mm (Ali Ghaderi et al 2006;Sherrington 1998;López-Martinez et al 2007;Bak et al 2011). …”

Section: Synthesis Of Ps-dvb and Ps-dvb-cnt Beadsmentioning

confidence: 99%

“…Approaches to addressing these challenges include chemical modification and functionalization of the CNTs (Sasthar and Cheung 1991), surfactant treatment (Guo et al 1989), and polymer wrapping (Candau 1987;Morse et al 1970). The integration of CNT/polymer composites has been focused on the improvement of mechanical and electrical properties of the matrix [Zhu et al 1997;Bak et al 2011]; however, in order to take advantages of such properties CNTs have to be both compatible and intimately dispersed within the polymer host. Nevertheless, due to strong Van der Waals forces, CNTs have a great tendency to self-aggregate (Matheel et al 2007) and (Ghaderi et al 2006).…”

Section: Introductionmentioning

confidence: 99%

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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: Synthesis Of Polystyrene (Ps)mentioning

confidence: 99%

Section: Synthesis Of Ps-dvb and Ps-dvb-cnt Beadsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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show abstract

Section: Synthesis Of Polystyrene (Ps)mentioning

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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“…7 Solution mixing, melt mixing, sol-gel, and in situ polymerization are the various methods to prepare polymer-clay nanocomposites. [10][11][12][13][14][15][16] The in situ polymerization method was conducted via swelling organoclay by monomers, followed by a reaction step. Chain growth within the clay galleries increases clay exfoliation and forms nanocomposite.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of poly(trimethylene terephthalate)/organoclay nanocomposite via in situ polymerization

Sheikholeslami

Rafizadeh

Taromi

et al. 2013

Journal of Thermoplastic Composite Materials

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Neat poly(trimethylene terephthalate) (PTT) and PTT/modified organoclay nanocomposite with various amounts of clay were synthesized by a two-step procedure. Terephthalic acid (TPA) was reacted with 1,3-propanediol (1,3-PDO) in the esterification step. Then, polycondensation reaction resulted in the formation of PTT in the presence of tetra buthyl titanate (Ti(OC 4 H 9 ) 4 ) as a catalyst. Commercially available organoclay (Cloisite 30B) was modified using 3-aminopropyltriethoxysilane via a silylation reaction. Thermal stability of modified clay was studied by means of thermal gravimetric analysis (TGA) that showed 10% less weight loss than Cloisite 30B. PTT/organoclay nanocomposites with 0.5, 1 and 2 wt% of modified organoclay were prepared by in situ polymerization. Synthesized polyesters were characterized by Fourier-transform infrared spectroscopy and protonnuclear magnetic resonance spectroscopy ( 1 H-NMR). Number average molecular weights were determined by 1 H-NMR and a new Mark-Houwink equation is reported for highly pure dichloroacetic acid as solvent at 25 C. Polymer's morphology was examined with xray diffraction and transmission electron microscopy. It was observed that clay layers were

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Incorporation of multiwalled carbon nanotubes on the surface of polystyrene microspheres via In Situ suspension polymerization

Cited by 9 publications

References 28 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

Cation exchange resin nanocomposites based on multi-walled carbon nanotubes

Synthesis and characterization of poly(trimethylene terephthalate)/organoclay nanocomposite via in situ polymerization

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