Synthesis of poly(ethylene glycol) functionalized MWNTs and their inclusion complexes with α-cyclodextrin

Wang, Yexiang; Xiong, Hua; Gao, Yong; Li, Huaming

doi:10.1007/s10853-008-2804-x

Cited by 11 publications

(6 citation statements)

References 39 publications

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“…CNTs can only detect molecules having distinct electron donating or accepting abilities. 14 For the detection of molecules that are weakly adsorbed on CNTs surface, the change in resistance is oen too small, and thus, their covalent 15,16 or non-covalent 10 modication is needed. It has been proved that some macromolecules including biopolymers, proteins, nucleic acids and carbohydrates, can smoothly wrap CNTs, and eventually bring them additional functionalities.…”

Section: Introductionmentioning

confidence: 99%

Decoration of carbon nanotubes by chitosan in a nanohybrid conductive polymer composite for detection of polar vapours

Molla-Abbasi

Ghaffarian

2014

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Decoration of carbon nanotubes by chitosan in a nanohybrid conductive polymer composite for detection of polar vapours

Molla-Abbasi

Ghaffarian

2014

RSC Adv.

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“…As a result, there is the potential for ICs formation between MWNT‐ g ‐PEG and α‐CDs. Very recently, Li32 prepared ICs from MWNT‐ g‐ PEG and α‐CDs, however, only crystals of stoichiometric complexes (EG:α‐CDs = 15:1) were obtained rather than hybrid hydrogels. In this work, we successfully prepare hybrid hydrogels from MWNT‐ g‐ PEG/α‐CDs and the rheological behavior of the resulting product is studied.…”

Section: Introductionmentioning

confidence: 99%

Injectable supramolecular hybrid hydrogels formed by MWNT‐grafted‐poly(ethylene glycol) and α‐cyclodextrin

Sui

Gao

et al. 2010

J. Polym. Sci. A Polym. Chem.

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Poly(ethylene glycol)-grafted-multiwalled carbon nanotube (MWNT-g-PEG) was synthesized by a coupling reaction and formed inclusion complexes (ICs) after selective threading of the PEG segment of the MWNT-g-PEG through the cavities of a-cyclodextrins (a-CDs) units. The polypseudorotaxane structures of the as-obtained hydrogels were confirmed by 1 H NMR, X-ray diffraction and DSC analyses. The complexation of the PEG segments with a-CDs and the hydrophobic interaction between the MWNT resulted in the formation of supramolecular hybrid hydrogels with a strong network. Thermal analysis showed that the thermal stability of the hydrogel was substantially improved by up to 100 C higher than that of native hydrogel. The resultant hybrid hydrogels were found to be thixotropic and reversible, and could be applied as a promising injectable drug delivery system. The mechanical strength of the hybrid hydrogels was greatly improved in comparison with that of the corresponding native hydrogels. V C 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: [3145][3146][3147][3148][3149][3150][3151] 2010

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“…1 [55]. The PEG functionalization is also observed by the appearance of the peak at around 2929 cm −1 , which corresponds to the CH stretching vibrations of the alkyl group of PEG [60]. Moreover, the increase in the intensity of the peak at 3440 cm −1 may show the increase in the amount of hydroxyl groups on the surface after chemical treatment [61].…”

Section: Resultsmentioning

confidence: 99%

Poly(ethylene terephthalate)/carbon nanotube composites prepared with chemically treated carbon nanotubes

Yeşil

Bayram

2011

Polymer Engineering & Sci

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Surfaces of multiwalled carbon nanotubes (CNT) were functionalized by treatment with strong acid mixture (purification) followed by modification with sodium dodecyl sulfate, poly(ethylene glycol) (PEG), and diglycidyl ether of Bisphenol A (DGEBA). Poly(ethylene terephthalate) (PET)-based conductive polymer composites were prepared by using these CNT by means of melt mixing with a twin screw extruder. Amount of carboxylic acid groups on the CNT surface increased after acid treatment but decreased with surface modification due to the consumption of these groups during the chemical reactions between the surface modifiers and CNT surface. Fourier transformed infrared spectroscopy (FTIR) and nuclear magnetic resonance analyses of the composites revealed the increase in the interactions between PET and CNT surface after treatment with PEG and DGEBA. Mechanical strength of the composites prepared with modified CNT were higher than that of the untreated CNT-filled composite owing to the enhanced interactions between PET and CNT.

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Synthesis of poly(ethylene glycol) functionalized MWNTs and their inclusion complexes with α-cyclodextrin

Cited by 11 publications

References 39 publications

Decoration of carbon nanotubes by chitosan in a nanohybrid conductive polymer composite for detection of polar vapours

Decoration of carbon nanotubes by chitosan in a nanohybrid conductive polymer composite for detection of polar vapours

Injectable supramolecular hybrid hydrogels formed by MWNT‐grafted‐poly(ethylene glycol) and α‐cyclodextrin

Poly(ethylene terephthalate)/carbon nanotube composites prepared with chemically treated carbon nanotubes

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