The effects of surface modifications of multiwalled carbon nanotubes on their dispersibility in different solvents and poly(ether ether ketone)

Cao, Zhen; Qiu, Li; Yang, Yongzhen; Chen, Yongkang; Liu, Xuguang

doi:10.1557/jmr.2014.284

Cited by 12 publications

(7 citation statements)

References 31 publications

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“…Rong 80 and Cheng et al 81 followed such dispersingmixing-drying-extruding procedure to prepare CNT/ PEEK composites containing acid-functionalized (up to 5 wt%) and polyethersulfone (PES)-functionalized CNTs (1 wt%), respectively. Cao et al 82 also mixed various surface-modified CNTs and PEEK directly in solution to evaluate the effect of surface modification. Using this dispersion-based compounding method, other functional particles can be incorporated into CNT/PEEK nanocomposites.…”

Section: Preparation Methodsmentioning

confidence: 99%

Carbon nanotube/polyetheretherketone nanocomposites: mechanical, thermal, and electrical properties

Zhang

2020

Journal of Composite Materials

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High-temperature engineering thermoplastics are gaining growing interests as they not only provide a lightweight solution but also affect the manufacturing processes and efficiencies. Polyetheretherketone (PEEK) is a semi-crystalline one to meet such requirement, and has been widely used as the matrix for fiber-reinforced plastics and nanocomposites. Owing to their superior physical properties, carbon nanotubes (CNTs) can be introduced into PEEK matrix in order to further improve the performances. This article reviews the state of the art of CNT/PEEK nanocomposites, by focussing on the preparation method and their mechanical, thermal, and electrical properties. The enhanced stiffness, thermal stability, and conductive properties provide PEEK and its family members richer opportunities toward high-performance applications.

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Section: Preparation Methodsmentioning

confidence: 99%

Carbon nanotube/polyetheretherketone nanocomposites: mechanical, thermal, and electrical properties

Zhang

2020

Journal of Composite Materials

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“…As can be seen from Figure characteristic peaks obviously increased after the chemical treatment. It showed that CNTs were tightly packed with each other after modification, and the number of carbon tubes in unit volume increased [31,32]. Figure 8 represents the FT-IR spectrum of (a) vibration peak of methylene (-CH 2 -), which indicated that the structure of methylene was not changed by oxidation.…”

Section: Xpsmentioning

confidence: 99%

Tip and inner walls modification of single-walled carbon nanotubes (3.5 nm diameter) and preparation of polyamide/modified CNT nanocomposite reverse osmosis membrane

Wang

Yang

Gao

et al. 2017

Journal of Experimental Nanoscience

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(2018) Tip and inner walls modification of single-walled carbon nanotubes (3.5 nm diameter) and preparation of polyamide/modified CNT nanocomposite reverse osmosis membrane, Journal of Experimental Nanoscience, 13:1, 11-26, DOI: 10.1080/17458080.2017 ABSTRACTTo enhance the water flux and salt rejection of reverse osmosis membranes, thin film nanocomposite reverse osmosis membranes were prepared by incorporating functionalised single-walled carbon nanotubes (SWNTs). The functionalised SWNTs were obtained by chemical process such as mixed acid oxidation and substitution reaction. The SWNTs were characterised by HRTEM, FTIR, TGA, Raman spectra, UV-Vis and XPS, etc. The surface morphology and structure of membrane were characterised by SEM and contact angle measurement, respectively. The results showed that carboxyl, acyl, amide and amine were successfully grafted on the tip and inner wall of the single-walled carbon nanotubes. The dispersity of the functionalised SWNTs in water was tested, indicating a good hydrophilic property. The polyamide/modified CNT nanocomposite reverse osmosis membrane was prepared. Compared with the bare polyamide membrane, the SWNT-polyamide thin film nanocomposite membranes showed higher property in hydrophilic surface and its water flux, as along with salt rejection, improved dramatically. The experimental results revealed that the modified SWNTs (especially those containing hydrophilic groups such as carboxyl groups and amino groups) well dispersed in the polyamide thin film layer, and hence improved the water permeation, and the salt rejection. KEYWORDSSingle-walled carbon nanotubes; inner/surface modification; SWNTpolyamide nanocomposite membranes; water flux and salt rejection ABBREVIATION CNTs: carbon nanotubes

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“…The supernatant was removed and the sediment was washed by deionized water until neutral. The product was dried in a vacuum oven at 80°C for 24 hours and marked as a-MWCNTs in which hydroxyl and carboxyl groups were grafted on the surfaces of MWCNTs [19], as shown in Fig. 1(a).…”

Section: Preparation Of Acid-functionalized Mwcntsmentioning

confidence: 99%

“…Then, the solution and a-MWCNTs dispersion were mixed in a flask and the reaction was allowed to proceed under magnetic stirring at 50°C for 10 hours. Finally, the reaction mixture was washed with ethanol and water respectively and dried under vacuum at 80°C for 24 hours to obtain the product marked as e-MWCNTs, and amino groups were grafted on the surfaces of MWCNTs [19], as shown in Fig. 1(b).…”

Section: Grafting Of Ethanolamine To Mwcntsmentioning

confidence: 99%

The surface modifications of multi-walled carbon nanotubes for multi-walled carbon nanotube/poly(ether ether ketone) composites

Cao

Qiu

Yang

et al. 2015

Applied Surface Science

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Please cite this article as: Z. Cao, L. Qiu, Y. Yang, Y. Chen, X. Liu, The surface modifications of multi-walled carbon nanotubes for multi-walled carbon nanotube/poly (ether ether ketone) composites, Applied Surface Science (2015), http://dx.Abstract The effects of surface modifications of multi-walled carbon nanotubes (MWCNTs) on the morphology, dynamic mechanical and tribological properties of multi-walled carbon nanotube/poly (ether ether ketone) (MWCNT/PEEK) composites have been investigated. MWCNTs were treated with mixed acids to obtain acid-functionalized MWCNTs. Then the acid-functionalized MWCNTs were modified with ethanolamine (named e-MWCNTs). The MWCNT/PEEK composites were prepared by a solution-blending method. A more homogeneous distribution of e-MWCNTs within the composites was found with scanning electron microscopy. Dynamic mechanical analysis demonstrated a clear increase in the storage modulus of e-MWCNT/PEEK composites because of the improved interfacial adhesion strength between e-MWCNTs and PEEK. Furthermore, the presence of e-MWCNTs caused an A c c e p t e d M a n u s c r i p t 2 enhancement in the glass transition temperature of the composites. Wear tests have shown that the friction coefficient of e-MWCNT/PEEK composites decreased significantly during the test after the running-in period. This suggests that there is an obvious improvement in tribological properties of e-MWCNT/PEEK composites. Overall, the e-MWCNT/PEEK composites have exhibited improved properties and are promising for their applications in industry.

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The effects of surface modifications of multiwalled carbon nanotubes on their dispersibility in different solvents and poly(ether ether ketone)

Cited by 12 publications

References 31 publications

Carbon nanotube/polyetheretherketone nanocomposites: mechanical, thermal, and electrical properties

Carbon nanotube/polyetheretherketone nanocomposites: mechanical, thermal, and electrical properties

Tip and inner walls modification of single-walled carbon nanotubes (3.5 nm diameter) and preparation of polyamide/modified CNT nanocomposite reverse osmosis membrane

The surface modifications of multi-walled carbon nanotubes for multi-walled carbon nanotube/poly(ether ether ketone) composites

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