Microwave-induced high surface functionalization of multi-walled carbon nanotubes for long-term dispersion in water

Davarpanah, Morteza; Maghrebi, Morteza; Hosseinipour, Ebrahim

doi:10.1007/s00339-013-7897-7

Cited by 7 publications

(3 citation statements)

References 31 publications

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“…The bands at 1630, 1104 and 1044 cm À1 are well linked to N-H bending, n C-N and n C-O, respectively [22,23]. The peaks at 2922, 1507 and 1460 cm À1 are also assigned to stretching vibrations of C-H, C5 5C and asymmetric vibration of -CH 2 bonds in the polymeric backbone, respectively [22][23][24]. The spectrum of Cl-PS shows a peak at 813 cm À1 assigned to stretching vibration of C-Cl [25].…”

Section: Infrared Spectroscopy Analysismentioning

confidence: 98%

Synthesis and application of diethanolamine-functionalized polystyrene as a new sorbent for the removal of p-toluenesulfonic acid from aqueous solution

Davarpanah

Ahmadpour

Rohani-Bastami

et al. 2015

Journal of Industrial and Engineering Chemistry

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Section: Infrared Spectroscopy Analysismentioning

confidence: 98%

Synthesis and application of diethanolamine-functionalized polystyrene as a new sorbent for the removal of p-toluenesulfonic acid from aqueous solution

Davarpanah

Ahmadpour

Rohani-Bastami

et al. 2015

Journal of Industrial and Engineering Chemistry

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“…The intensity ratio (I D /I G ) of the CNTs is 0.544, which increases to 0.632 in the microwave‐assisted synthesized nanocomposites. This increase might indicate the conversion of some sp 2 carbons on the CNT wall to sp 3 hybridization 50,51 . Since the CNTs were in the radical polymerization medium, some free radicals could be absorbed by the sp 2 carbons and converted to sp 3 , resulting in a grafted polymer chain on the CNTs.…”

Section: Resultsmentioning

confidence: 99%

Facile synthesis of polystyrene‐coated carbon nanotubes via microwave‐assisted in‐situ polymerization and tuning of the DC electrical conductivity and impedance characteristics

2023

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An attempt has been made to tune the DC electrical conductivity and impedance characteristics of the nanocomposites by coating carbon nanotubes (CNTs). A microwave‐assisted in‐situ polymerization approach is utilized to coat the CNTs with polystyrene and no initiators are used. The nanocomposites are characterized by FE‐SEM, TEM, FT‐IR, Raman and TGA. Based on the morphological studies, a polystyrene layer is detected on the CNTs. According to the TGA results, the weight loss in the temperature range of polystyrene decomposition increases with increasing microwave irradiation time, suggesting a higher polystyrene content. Moreover, the DC electrical conductivity of the nanocomposites, as well as the real and imaginary impedance and dielectric permittivity are explored. It is shown that increasing the irradiation time decreases the DC electrical conductivity and dielectric permittivity but increases the real and imaginary impedance. Since the thickness of the polystyrene layer depends on the duration of microwave irradiation, our method can be used to tune the electrical conductivity and impedance characteristics. This can be applied to practical situations where a particular resistance is required.

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“…Furthermore, the dispersibility of MWCNTs in an aqueous medium improved after functionalization of indene with MWCNTs. Davarpanah et al [ 88 ] developed esterified and aminated MWCNTs using a microwave-assisted process with monoethanolamine ( Figure 15 c), diethanolamine ( Figure 15 d), and triethanolamine ( Figure 15 e). First, pristine MWCNTs were oxidized in the presence of sulfuric and nitric acid, with continuous stirring, for 12 h at room temperature.…”

Section: Microwave Irradiation-based Development Of Mwcntsmentioning

confidence: 99%

Microwave-Assisted Functionalization of Multi-Walled Carbon Nanotubes for Biosensor and Drug Delivery Applications

et al. 2023

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Microwave-assisted synthetic methods have emerged as a popular technique for surface modification and the functionalization of multi-walled carbon nanotubes (MWCNTs) for diverse drug delivery applications. Microwave-induced functionalization of MWCNTs provides a high functionalization and requires less time than conventional techniques. Microwave methods are simple, fast, and effective for the covalent and noncovalent conjugation of MWCNTs with various biomolecules and polymers. The present review focuses on the synthetic and drug delivery applications of microwave irradiation techniques (MITs) for the functionalization of MWCNTs, using amino acids and other molecular frameworks containing amino groups, vitamins, proteins, epoxy moieties, metal nanoparticles, and polymers.

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Microwave-induced high surface functionalization of multi-walled carbon nanotubes for long-term dispersion in water

Cited by 7 publications

References 31 publications

Synthesis and application of diethanolamine-functionalized polystyrene as a new sorbent for the removal of p-toluenesulfonic acid from aqueous solution

Synthesis and application of diethanolamine-functionalized polystyrene as a new sorbent for the removal of p-toluenesulfonic acid from aqueous solution

Facile synthesis of polystyrene‐coated carbon nanotubes via microwave‐assisted in‐situ polymerization and tuning of the DC electrical conductivity and impedance characteristics

Microwave-Assisted Functionalization of Multi-Walled Carbon Nanotubes for Biosensor and Drug Delivery Applications

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