Preparation and Characterization of Thermal Conductive Composite Membranes of Aligned Esterified Carbon Nanotubes/Poly(vinylidene fluoride)

Wang, Ziyi; Sun, Linquan; Li, Xin; Li, Bao-An; Wang, Shichang

doi:10.1080/03602559.2014.935403

Cited by 7 publications

(3 citation statements)

References 33 publications

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“…This result can be attributed to the excellent compatibility between the filler and the matrix. Figure e and Table summarize the thermal conductivity and tensile properties of the PVDF composite in this work and other literature. − We divided three regions (low-performance regions, normal performance regions, and high-performance regions) according to the value of thermal conductivity and tensile property for scientific assessment of the performance of composite materials. As shown in Figure e, the data in this work lie in the high-performance region, which is up to 6 times higher in thermal conductivity and 3–5 times higher in tensile strength compared with other composites.…”

Section: Resultsmentioning

confidence: 99%

“…(a) Thermal conductivity of BN–PVDF, unaligned mhBN–PVDF (uAmhBN–PVDF), and aligned mhBN–PVDF (AmhBN–PVDF) composites; (b) tensile strength of BN–PVDF and aligned mhBN–PVDF composites; (c) the comparison of the tensile strength of 15 wt % aligned mhBN–PVDF, BN–PVDF composites, and neat PVDF; (d) impact strength of aligned mhBN–PVDF; (e) data of thermal conductivity and tensile strength in this work and in the literature from refs − ; and (f) impact strength as a function of filler loading compared with the data in the literature from refs − .…”

Section: Resultsmentioning

confidence: 99%

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Mussel-Inspired and Magnetic Co-functionalization of Hexagonal Boron Nitride in Poly(vinylidene fluoride) Composites Toward Enhanced Thermal and Mechanical Performance for Heat Exchangers

Cao

et al. 2018

ACS Appl. Mater. Interfaces

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Thermal-conductive polymer composites have developed to be a hotspot in academic and industrial fields recently. Both efficient heat transport and superior mechanical properties are of critical significance for high-performance thermal-conductive devices. In this paper, magnetic hexagonal boron nitride (mhBN) with excellent interfacial compatibility is successfully synthesized by dopamine and magnetic co-functionalization, and mhBN-poly(vinylidene fluoride) (mhBN-PVDF) composites with a combination of high thermal conductivity and outstanding mechanical property are achieved due to the integration of excellent interfacial interaction and aligned filler architecture into one material's system. The thermal conductivity increases from 0.35 W/(m K) for the 20 wt % pure BN-PVDF to 0.82 W/(m K) after the dopamine modification and further to 1.43 W/(m K) after alignment. The effective medium approximation model demonstrates that the optimization of mhBN orientation and decrease of thermal resistance are two major factors for the enhancement of thermal conductivity. Moreover, the mhBN-PVDF composites also exhibit excellent tensile strength (168.5 MPa at 15 wt % content) and impact strength (20-30 kJ/m). The significantly enhanced thermal and mechanical properties result in the excellent heat exchange ability and durability in the heat exchange test, which is important for potential application in the heat exchange industry.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Mussel-Inspired and Magnetic Co-functionalization of Hexagonal Boron Nitride in Poly(vinylidene fluoride) Composites Toward Enhanced Thermal and Mechanical Performance for Heat Exchangers

Cao

et al. 2018

ACS Appl. Mater. Interfaces

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“…Drugs can be loaded into these carriers both by covalent bonds or non-covalent interactions [60][61][62][63]. CNM functionalization can be achieved with covalent modification via carboxylation and oxidation [64,65], fluorination [66][67][68], amidation [69][70][71], thiolation [72][73][74], and esterification [75,76]. Molecules can be bound by different bond types such as amide [77][78][79][80], disulfide [81][82][83], ester [78,84,85], and carbamate bonds [86,87].…”

Section: Introductionmentioning

confidence: 99%

Molecular Interpretation of Pharmaceuticals’ Adsorption on Carbon Nanomaterials: Theory Meets Experiments

2020

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The ability of carbon-based nanomaterials (CNM) to interact with a variety of pharmaceutical drugs can be exploited in many applications. In particular, they have been studied both as carriers for in vivo drug delivery and as sorbents for the treatment of water polluted by pharmaceuticals. In recent years, the large number of experimental studies was also assisted by computational work as a tool to provide understanding at molecular level of structural and thermodynamic aspects of adsorption processes. Quantum mechanical methods, especially based on density functional theory (DFT) and classical molecular dynamics (MD) simulations were mainly applied to study adsorption/release of various drugs. This review aims to compare results obtained by theory and experiments, focusing on the adsorption of three classes of compounds: (i) simple organic model molecules; (ii) antimicrobials; (iii) cytostatics. Generally, a good agreement between experimental data (e.g. energies of adsorption, spectroscopic properties, adsorption isotherms, type of interactions, emerged from this review) and theoretical results can be reached, provided that a selection of the correct level of theory is performed. Computational studies are shown to be a valuable tool for investigating such systems and ultimately provide useful insights to guide CNMs materials development and design.

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Improving the dispersion of MWCNT and MMT in PVDF melts employing controlled extensional flows

Goes

Woicichowski

Rosa

et al. 2020

J of Applied Polymer Sci

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Poly (vinylidene fluoride) (PVDF) has been widely explored to produce polymer nanocomposites possessing outstanding combinations of properties. In this work, the impact of extensional melt flows on the dispersion, relaxation and crystallinity of PVDF nanocomposites filled with multiwalled carbon nanotubes (MWCNT) and montmorillonites (MMT) was studied. Extrusion was employed to produce nanocomposites containing 3 wt% of fillers, named: (i) PVDF/3 wt% MWCNT, (ii) PVDF/3wt%MMT, and (iii) PVDF/1.5wt%MWCNT/1.5 wt% MMT. The results showed that applying a sequence of extensional flows through the melts improved the dispersion of both fillers in the PVDF matrix. Moreover, extensional flows significantly enhanced the viscosity and relaxation of MWCNT nanocomposite, but had marginal effects on MMT nanocomposite. On the other hand, MMT favored the crystallization of the β piezoelectric phase of PVDF over the α phase and the extensional flow enhanced its crystallinity content. Therefore, these new insights prospect a vast horizon toward the use of extensional flows for tailoring synergic combinations of properties in hybrid PVDF/MWCNT/MMT systems.

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Preparation and Characterization of Thermal Conductive Composite Membranes of Aligned Esterified Carbon Nanotubes/Poly(vinylidene fluoride)

Cited by 7 publications

References 33 publications

Mussel-Inspired and Magnetic Co-functionalization of Hexagonal Boron Nitride in Poly(vinylidene fluoride) Composites Toward Enhanced Thermal and Mechanical Performance for Heat Exchangers

Mussel-Inspired and Magnetic Co-functionalization of Hexagonal Boron Nitride in Poly(vinylidene fluoride) Composites Toward Enhanced Thermal and Mechanical Performance for Heat Exchangers

Molecular Interpretation of Pharmaceuticals’ Adsorption on Carbon Nanomaterials: Theory Meets Experiments

Improving the dispersion of MWCNT and MMT in PVDF melts employing controlled extensional flows

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