Facile synthesis of copper phthalocyanine supported on MWCNTs to improve their dispersibility and compatibility in PEN matrix

Pu, Zejun; Chen, Lan; Tong, Lifen; Long, Ya; Huang, Xu; Liu, Xiaobo

doi:10.1016/j.matlet.2013.07.055

Cited by 15 publications

(11 citation statements)

References 17 publications

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“…However, the diameter of MWCNTs used in our laboratory is less than 50 nm as shown in Fig. 6d [22]. Namely, MWCNTs played a very important effect on crystalline of BP-PEN.…”

Section: Micromorphology Of the Nanocomposite Filmsmentioning

confidence: 84%

“…Typical synthesis of acidulated MWCNTs was described as follows [22]: 5.0 g MWCNTs was added into 225 mL concentrated sulfuric acid, followed by addition of 75 mL concentrated nitric acid to form a black solution with the help of ultrasonic bath at 60°C for 2 h. Then, the final products were obtained by centrifuging and rinsed in three cycles of centrifuging/washing/redispersion in deionized water and anhydrous ethanol, respectively. Finally, the MWCNTs bonded to -COOH groups and -OH is obtained after drying under vacuum at 80°C for 12 h.…”

Section: Purification Of Mwcntsmentioning

confidence: 99%

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Effect of multiwalled carbon nanotubes on the crystallization and dielectric properties of BP-PEN nanocomposites

Zheng

Yang

et al. 2014

J Mater Sci: Mater Electron

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In this work, polymer-based nanocomposite films formed from biphenol poly(arylene ether nitrile) (BP-PEN) and multiwalled carbon nanotubes (MWCNTs) were successfully prepared by the solution casting method combined with continuous ultrasonic dispersion technology. The micromorphology, thermal, mechanical and dielectric properties of the nanocomposite films were investigated in detail. Non-isothermal crystallization behavior studies indicate that the presence of MWCNTs enhances the crystallization of BP-PEN in the nanocomposites, which is consistent with the XRD analysis. Most importantly, it could be observed that the film containing 0.8 wt% MWCNTs reached the maximum crystallinity. Although, incorporation of MWCNTs did not obviously increase the mechanical of the films, all the nanocomposite films still exhibited excellent mechanical strength. The SEM micrographs of the nanocomposite films showed that the MWCNTs were uniformly coated by BP-PEN crystals, and indicating significantly improved nucleation ability of MWCNTs for polymer crystallization.

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“…However, the diameter of MWCNTs used in our laboratory is less than 50 nm as shown in Fig. 6d [22]. Namely, MWCNTs played a very important effect on crystalline of BP-PEN.…”

Section: Micromorphology Of the Nanocomposite Filmsmentioning

confidence: 84%

Section: Purification Of Mwcntsmentioning

confidence: 99%

Effect of multiwalled carbon nanotubes on the crystallization and dielectric properties of BP-PEN nanocomposites

Zheng

Yang

et al. 2014

J Mater Sci: Mater Electron

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“…As shown in Fig. 3b, the strong band at 1570-1700 cm 21 is a wide peak for CNTs, and the characteristic absorption peak of the C@O of -COOH at 1724 cm 21 is attributed to mixed acid treatment [17]. The peak at 1712 cm 21 in the FTIR spectra of pure CPEN corresponds to the C@O absorption of the free carboxyl groups on the phenolphthalein units, and the absorption band at 2231 cm 21 belonging to the symmetrical stretching vibration of nitrile groups (-CN) was clearly observed in pure CPEN and CPEN-f-CNTs [18].…”

Section: Characterization Of Surface Functionalized Cntsmentioning

confidence: 89%

Effect of surface functionalization on the properties (rheological, mechanical, and dielectric) and microtopography of PEN/CPEN-f-CNTs nanocomposites

Zheng

Jia

et al. 2015

Polym. Compos.

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Novel carboxylic poly(arylene ether nitrile)s (CPEN) functionalized carbon nanotubes (CPEN-f-CNTs) were successfully prepared by a simple and effective solvent-thermal route. The CPEN-f-CNTs were subsequently used as the novel filler for preparation of high performance poly(arylene ether nitrile)s (PEN) nanocomposites. The SEM characterization of the PEN nanocomposites revealed that the CPEN-f-CNTs present better dispersion and interfacial compatibility in the PEN matrix, which was confirmed by the linear rheological analysis (Cole-Cole plots) as well. Consequently, the improved thermal stability (increased initial and maximum decomposition temperature) and enhanced mechanical properties (tensile strength and modulus) were obtained from nanocomposites using CPEN-f-CNTs. More importantly, the PEN/CPEN-f-CNTs nanocomposites not only show a high dielectric constant but also have low dielectric loss. For example, a dielectric constant of 39.7 and a dielectric loss of 0.076 were observed in the PEN composite with 5 wt%

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“…It can be seen that the absorption bands of a-CNTs at around 3420 and 1731 cm -1 are ascribed to the hydroxyl and carboxyl group, respectively [20]. After CNTs were grafted by 4-APN, the bands at 1731 cm -1 disappear, followed by the appearance of new bands at 1697 cm -1 , which is attributed to the carbonyl (C=O) stretching vibration [21].…”

Section: Characterization Of Hbcupc-g-cnts Nanohybridsmentioning

confidence: 96%

Covalent grafting of a-CNTs on copper phthalocyanine for the preparation of PEN nanocomposites with high dielectric constant and high thermal stability

Jia

Liu

2015

J Mater Sci: Mater Electron

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Functionalization of carbon nanotubes (CNTs)is considered as an essential step to enable their manipulation and application in potential end-use products. In this paper, novel ternary dielectric polymer-based nanocomposite films, consisting of hyperbranched copper phthalocyanine grafted carbon nanotubes and polyarylene ether nitriles (PEN/HBCuPc-g-CNTs), were prepared via solution-casting method. The CNTs are enwrapped by a functional intermediate HBCuPc thick layer and formed rough shell on the surface of CNTs to ensure a good dispersion of CNTs in PEN matrix and suppress the mobility of free charge carriers effectively, resulting in significant improvement of the dielectric properties of PEN/HBCuPc-g-CNTs nanocomposite films in contrast to PEN/CNTs. Furthermore, around 38 wt% of phthalocyanine oligomer based on the total weight of the CNTs can be covalently grafted to the surface of the CNTs. Compared with raw CNTs, grafted CNTs showed better dispersion and stronger interfacial adhesion to PEN matrix. SEM images showed that HBCuPc-CNT was perfectly embedded in the matrix and no pullout phenomenon could be observed, thus resulting in significant improvement of the mechanical and thermal properties of PEN/HBCuPcg-CNTs nanocomposite films compared to pure PEN films. For 2.0 wt% HBCuPc-g-CNTs reinforced PEN nanocomposite films, the tensile strength and T g were increased by 24.5 % and 5°C, respectively, in comparison with those of pure PEN.

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Facile synthesis of copper phthalocyanine supported on MWCNTs to improve their dispersibility and compatibility in PEN matrix

Cited by 15 publications

References 17 publications

Effect of multiwalled carbon nanotubes on the crystallization and dielectric properties of BP-PEN nanocomposites

Effect of multiwalled carbon nanotubes on the crystallization and dielectric properties of BP-PEN nanocomposites

Effect of surface functionalization on the properties (rheological, mechanical, and dielectric) and microtopography of PEN/CPEN-f-CNTs nanocomposites

Covalent grafting of a-CNTs on copper phthalocyanine for the preparation of PEN nanocomposites with high dielectric constant and high thermal stability

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