Facile preparation, characterization and performance of noncovalently functionalized graphene/epoxy nanocomposites with poly(sodium 4-styrenesulfonate)

Li, Yuchao; Tang, Jianguo; Huang, Linjun; Wang, Yao; Liu, Jixian; Ge, Xinlei; Tjong, S.C.; Li, Robert K.Y.; Belfiore, Laurence A.

doi:10.1016/j.compositesa.2014.09.016

Cited by 66 publications

(35 citation statements)

References 52 publications

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“…The XPS spectrum of rGO (Fig. 3b2) also exhibited the same oxygen functionalities, but their C-O peak intensity was smaller than those in GO, indicating deoxygenation occurs 9 during the hydrazine hydrate reducing reduction [26]. In addition, a weak component at 285.9 eV corresponding to C bound to nitrogen (C-N) can be discriminated as a characteristic peak of rGO reduced by hydrazine hydrate [27].…”

Section: Resultsmentioning

confidence: 92%

Effect of polymer modifier chain length on thermal conductive property of polyamide 6/graphene nanocomposites

Song

Yang

Ding

et al. 2015

Composites Part A: Applied Science and Manufacturing

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Section: Resultsmentioning

confidence: 92%

Effect of polymer modifier chain length on thermal conductive property of polyamide 6/graphene nanocomposites

Song

Yang

Ding

et al. 2015

Composites Part A: Applied Science and Manufacturing

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“…24 Therefore, the PSS-decorated nanographene (PSSG) has attracted more and more attention recently. [25][26][27] However, almost all of those works concentrated on the capacitance performance, the electrochemical, and dielectric properties of PSS-functionalized rGO, 28 but less attention has been paid to the biological applications of PSSG, especially in the field of drug carrier development. The only reported work is that the PSS-modified graphene was conjugated with quantum dots for cell imaging, 29 while the antitumor efficacy as a drug carrier and biobehavioral study of PSSG in tumor cells were neglected.…”

Section: Introductionmentioning

confidence: 99%

“…27,36 The reduction degree of the PSS-functionalized GO was investigated using UV-vis ( Figure 3A) and FTIR spectroscopy ( Figure 3B). In Figure 3A, a strong absorption peak at 231 nm was observed in GO (curve c), which was attributed to π-π* transitions of C=C in aromatic ring.…”

mentioning

confidence: 99%

Preparation and tumor cell model based biobehavioral evaluation of the nanocarrier system using partially reduced graphene oxide functionalized by surfactant

Wang

Liu²,

Luo

2015

IJN

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Background Currently, surfactant-functionalized nanomaterials are tending toward development of novel tumor-targeted drug carriers to overcome multidrug resistance in cancer therapy. Now, investigating the biocompatibility and uptake mechanism of specific drug delivery systems is a growing trend, but usually a troublesome issue, in simple pharmaceutical research. Methods We first reported the partially reduced graphene oxide modified with poly(sodium 4-styrenesulfonate) (PSS) as a nanocarrier system. Then, the nanocarrier was characterized by atomic force microscope, scanning electron microscope, high-resolution transmission electron microscope, ultraviolet–visible (UV-vis) spectroscopy, Fourier transform infrared spectroscopy, X-Ray powder diffraction, and Raman spectroscopy. Epirubicin (EPI) was attached to PSSG via π–π stacking, hydrogen bonding, and physical absorption to form conjugates of PSSG–EPI. The adsorption and desorption profiles, cytotoxicity coupled with drug accumulation, and uptake of PSSG and PSSG–EPI were evaluated. Finally, the subcellular behaviors, distribution, and biological fate of the drug delivery system were explored by confocal laser scanning microscope using direct fluorescence colocalization imaging and transmission electron microscopy. Results The partially reduced graphene oxide sheets functionalized by surfactant exhibit good dispersibility. Moreover, due to much less carboxyl groups retained on the edge of PSSG sheets, the nanocarriers exhibit biocompatibility in vitro. The obtained PSSG shows a high drug-loading capacity of 2.22 mg/mg. The complexes of PSSG–EPI can be transferred to lysosomes in 2 hours through endocytosis, then the drug is released in the cytoplasm in 8 hours, and ultimately EPI is delivered into cell nucleus to exhibit medicinal effects in 1 day. Conclusion The comprehensive exploration of the biological uptake mechanism of functional graphene-mediated tumor cell targeting model provides a typical protocol for evaluation of drug delivery system and will benefit the discovery of new surfactant-modified nanocarriers in nanomedicine.

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“…Polymer nanocomposites have been extensively studied due to the premise of better mechanical, electrical and thermal properties compared to pure polymer or "traditional composites" [5,6]. In general, the key factors for obtaining advanced performance polymer nanocomposites are homogeneous distribution of nanofiller within the polymer matrix, and a strong interfacial adhesion between matrix and nanofiller [7].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of ionic liquid onto halloysite nanotubes: Thermal and mechanical properties of heterophasic PE-PP copolymer nanocomposites

Bischoff¹,

Simon²,

Liberman³

et al. 2016

AIP Conference Proceedings

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Abstract. The surface adsorption of inorganic clays with ionic liquids has attracted much attention due to improve the interaction of hydrophilic clay with the hydrophobic polymers. However, successful organic adsorption strongly depends on the characteristics of ionic liquid (anion, chain size and concentration), and the reaction conditions (as polarity of solvent). In this study, such factors were analyzed and correlated with morphology, thermal and mechanical properties of the nanocomposites. The heterophasic ethylene-propylene copolymer nanocomposites were prepared by melt intercalation method in a twin screw co-rotating extruder. The halloysite nanotubes (HNT) was used as filler -natural and modified with different ionic liquids. The results showed that a better distribution and dispersion of the nanoparticles was achieved in the samples with modified HNT (m-HNT) and was more significant when the ionic liquid adsorption was conducted in a less polar solvent. The thermal stability of the nanocomposites with m-HNT was higher compared to the neat CP. Additionally, the better balance in the mechanical properties was obtained by the use of the more hydrophobic ionic liquid and higher concentration with improve of 27% in the Young Modulus without loss in the impact properties at room temperature. These superior behaviors of ionic liquid adsorption products exhibit properties suitable for many industrial applications.

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Facile preparation, characterization and performance of noncovalently functionalized graphene/epoxy nanocomposites with poly(sodium 4-styrenesulfonate)

Cited by 66 publications

References 52 publications

Effect of polymer modifier chain length on thermal conductive property of polyamide 6/graphene nanocomposites

Effect of polymer modifier chain length on thermal conductive property of polyamide 6/graphene nanocomposites

Preparation and tumor cell model based biobehavioral evaluation of the nanocarrier system using partially reduced graphene oxide functionalized by surfactant

Adsorption of ionic liquid onto halloysite nanotubes: Thermal and mechanical properties of heterophasic PE-PP copolymer nanocomposites

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