Ionic Liquid of Ultralong Carbon Nanotubes

Lei, Yuchen; Xiong, Chuanxi; Dong, Lijie; Guo, Hong; Su, Xiaohong; Yao, Junlong; You, Yang; Tian, Demei; Shang, Xuemei

doi:10.1002/smll.200700250

Cited by 52 publications

(26 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 6A,B shows TEM images of CaCO3 NFs. The figure shows that the CaCO3 NF's surface was wrapped in a shell structure formed by organic matter, and the thickness of the shell was about 5.6 nm, which was close to the theoretically calculated thickness of organic matter layer 5.9 ± 0.4 nm [39]. It was reported that this organic matter layer provided CaCO3 NPs with cohesive and slip-like properties that acted as a "solvent phase" in the system, giving the system a certain viscosity and Figure 5A, the CaCO 3 NPs' shape was cubic, and the particle size was about 50 nm.…”

Section: Low-temperature Creep Propertiessupporting

confidence: 85%

Preparation and the Effect of Surface-Functionalized Calcium Carbonate Nanoparticles on Asphalt Binder

Shen

Pei

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

To solve the nanoparticles (NPs) agglomeration phenomena of nanometer calcium carbonate (nano-CaCO3) modified asphalt binder, in this paper, solvent-free CaCO3 nanofluids (NFs) were prepared based on surface-functionalized CaCO3 NPs to study the effect on asphalt. Microscopic structures, compositions, and thermal stability were characterized by Fourier transform infrared spectrometer (FTIR), X-ray diffractometer (XRD), transmission electron microscope (TEM), and thermogravimetric analyzer (TGA), respectively. Results showed that perfect CaCO3 NFs were successfully prepared, and were good enough for asphalt mixing due to their excellent thermal stability. Scanning electron microscopy (SEM), conventional tests, dynamic shear rheometry (DSR), and bending beam rheometry (BBR) were conducted to investigate the modifying effect. The SEM results indicated that CaCO3 NFs had better compatibility with asphalt binder than original CaCO3 NPs. Conventional and DSR test results demonstrated that CaCO3 NFs had slight negative effects on high-temperature performance while improving the low-temperature performance of the asphalt binder. The BBR test results confirmed that the modifier addition effectively enhanced asphalt binders’ low-temperature crack resistance performance.

show abstract

Section: Low-temperature Creep Propertiessupporting

confidence: 85%

Preparation and the Effect of Surface-Functionalized Calcium Carbonate Nanoparticles on Asphalt Binder

Shen

Pei

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…In sharp contrast, the previous hybrid self-suspended NPs that flow exhibit liquid-like rheological behavior. [1][2][3][4][5][6][7][8][9][10] Both G' and G'' decrease with increasing temperature.…”

mentioning

confidence: 99%

“…Various hybrid self-suspended NPs have been synthesized from surface modification of the nanostructures, for example, SiO 2 , g-Fe 2 O 3 , [1,2] TiO 2 , [3] ZnO, [4] quantum dots, [5] gold, platinum, palladium, [6] CaCO 3 , [7] and carbon nanotubes. [8][9][10] The intrinsic electronic, magnetic, and luminescent properties of various nanostructures have made the self-suspended NPs a promising alternative to conducting lubricants, heat-transfer fluids, batteries, and printing electronics. [2,4,11] Aside from the above mentioned self-suspended NPs and their corresponding liquid-like [1,2] behavior, herein we report a self-suspended polyaniline (PANI) that exhibits a unique thermoreversible gel-like rheological response.…”

mentioning

confidence: 99%

Self‐Suspended Polyaniline Doped with a Protonic Acid Containing a Polyethylene Glycol Segment

Huang

Wang

et al. 2011

Chemistry An Asian Journal

Self Cite

View full text Add to dashboard Cite

Self-suspended nanoparticles (NPs) are flowable at or near room temperature without the presence of any solvent. The zero vapor pressure of self-suspended NPs eliminates the environmental concerns associated with using various solvents, and has attracted extensive research interests recently. Various hybrid self-suspended NPs have been synthesized from surface modification of the nanostructures, for example, SiO 2 , g-Fe 2 O 3 , [1,2] TiO 2 , [3] ZnO, [4] quantum dots, [5] gold, platinum, palladium, [6] CaCO 3 , [7] and carbon nanotubes. [8][9][10] The intrinsic electronic, magnetic, and luminescent properties of various nanostructures have made the self-suspended NPs a promising alternative to conducting lubricants, heat-transfer fluids, batteries, and printing electronics. [2,4,11] Aside from the above mentioned self-suspended NPs and their corresponding liquid-like [1,2] behavior, herein we report a self-suspended polyaniline (PANI) that exhibits a unique thermoreversible gel-like rheological response. Owing to the intrinsic electrical properties of PANI, the self-suspended PANI might exhibit high electroconductivity, excellent electroluminescence, unique electrochromism, and outstanding processability, which could have widespread application in electrochromic devices, medical diagnostic transducers, lightweight batteries, electroluminescent devices, fuel cells, sensors, and actuators. [12][13][14][15][16][17][18] We anticipate that the technique reported here is also applicable to other polymers for exhibiting this unique structure and properties.The self-suspended PANI was prepared using a long-chain protonic acid containing a polyethylene glycol segment (CH 3 H) (NPES) as the dopant during the polymerization of the aniline monomers, and then removed the excess of NPES in the polymer solution through extensive dialysis. A dialysis experiment was carried out to investigate the removal of NPES, and the result indicates that all the unreacted NPES molecules can be extracted out of the dialysis bag (see the Supporting Information, Figure S1), which resulted in a solvent-free system. The doped PANI derivatives can self-assemble into nanofibrils. [19] By controlling the average doping ratio of the PANI molecule chain within a system, the PANI nanofibrils can further organize into micelles and exhibit unique thermoreversible gel-like rheology behavior. [20][21][22][23][24] Although such thermoreversible rheology behavior resembles those of previously reported thermoreversible gels, [25][26][27][28] the two categories are essentially different in that a real thermoreversible gel possesses a fibrillar network morphology. [27] The micelle morphology may originate from the nature of NPES which is quite different from those used in previously reported work involving sulfonic acid doped PANI; [25][26][27][28] for example, NPES contains a long flexible chain segment of polyethylene glycol. These NPES molecules with high flexibility significantly alter the assembly behavior of doped PANI and thus results in PANI derivative...

show abstract

“…Recently, Giannelis and co‐workers4 pioneered a new class of hybrids, termed nanoparticle ionic materials (NIMs), which comprise a nanoparticle core functionalized with a covalently tethered ionic corona. Solvent‐free CaCO 3 ,5 protein,6 and carbon nanotube7 liquids adopting this approach have been reported. In these sorts of NIMs, a cationic oligomeric corona is grafted onto the nanoparticle cores, and anionic surfactants act as a counterion to produce solvent‐free nanoparticle ionic liquids 8.…”

Section: Methodsmentioning

confidence: 99%