Nondestructive functionalization of carbon nanotubes by combining mussel-inspired chemistry and RAFT polymerization: Towards high dielectric nanocomposites with improved thermal management capability

Xie, Ao; Wang, Yuxin; Jiang, Pingkai; Li, Shengtao; Huang, Xingyi

doi:10.1016/j.compscitech.2017.11.022

Cited by 46 publications

(16 citation statements)

References 49 publications

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“…The existence of large agglomerations may exhibit more significant Maxwell-Wagner interfacial polarization than the nano-sized particles [35], which lead to a larger ε′. It is also worth noticing that the ε′ of the epoxy/EGS nanocomposites, especially for 5 wt% filled at low frequencies, exhibits weaker frequency dependence than the epoxy/OS nanocomposites at the same filler loading, which is coincident with literature work [24]. This weak frequency dependence is suggestive of tighter chemically-bonded interface that can block the motion of epoxy chains and thus suppress the interfacial polarization.…”

Section: Resultssupporting

confidence: 85%

“…It has been well-recognized that the organic-inorganic interface in the nanocomposite plays a prominent role in determining the dielectric properties of polymer composites [9,11,[24][25][26][27][41][42][43][44][45]. Much improved fundamental understandings of the role of the interface are needed in order to design high-performance dielectric materials.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, agglomeration of the fillers is known to lead to much degraded properties of the resultant composites [18]. Thus, to design compatible and intimate inorganic-organic interfaces in polymer nanocomposites, numerous surface modification methods for nanoparticles including hydroxylation, silanization and esterification have been carried out [8,16,[19][20][21][22][23][24][25][26]. For instance, organic chains have been bonded onto the surface of the nanoparticles via a silicon-oxygen-silicon bond with a silane coupling agent [9,11,19,20,27].…”

Section: Introductionmentioning

confidence: 99%

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Synergetic enhancement of mechanical and electrical strength in epoxy/silica nanocomposites via chemically-bonded interface

Liu

Tian

et al. 2018

Composites Science and Technology

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While the incorporation of the inorganic fillers into polymers is envisioned to improve the properties of polymers, the organic-inorganic interface in the nanocomposite plays a prominent role in the modulation of the electrical, mechanical and thermal properties. Here, the epoxy chain-grafted silica nanoparticles were prepared and utilized as the fillers in epoxy matrix. The multiple physical properties such as the tensile strength, the elongation at break, the glass transition temperature, the dielectric strength of the nanocomposites with epoxy chain-grafted silica are simultaneously improved in comparison with those of the neat epoxy and the nanocomposites with unmodified silica. Moreover, substantial reductions in the water absorption ratio, dielectric loss and electric conductivity are obtained in the nanocomposites filled with epoxy-grafted silica even at relatively low filler loadings. These results verify the critical role of the chemically-bonded interface between organic and inorganic phases in determining the mechanical and dielectric strength of the polymer nanocomposites. The interaction zone models for the interface between nanoparticle and polymer matrix have been proposed to rationalize the experimental results.

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Section: Resultssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synergetic enhancement of mechanical and electrical strength in epoxy/silica nanocomposites via chemically-bonded interface

Liu

Tian

et al. 2018

Composites Science and Technology

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“…The resulting P (VDF‐HFP)/PF‐PDA‐RGO nanocomposite exhibited an enhanced dielectric performance with high dielectric constant and low dielectric loss. Additionally, the PDA adhesion layer also serves as a platform for immobilizing initiators to graft polymer from the surface of CNTs . Song et al coated CNTs with a dense and uniform poly(glycidyl methacrylate) (PGMA) brushes by integrating mussel‐inspired chemistry and the surface‐initiated ARGET ATRP method .…”

Section: Introductionmentioning

confidence: 99%

“…The CNTs were first coated with a layer of PDA, and then, the ATRP initiators were immobilized on the PDA shell to initiate the growth of PGMA brushes. Xie et al reported a nondestructive strategy to coat CNTs with PGMA and PMMA shell by combining PDA chemistry and reversible addition‐fragmentation chain transfer (RAFT) polymerization . The influence of the interface between the fillers and the matrix on the dielectric and thermal properties was investigated.…”

Section: Introductionmentioning

confidence: 99%

Integration of PDA Chemistry and Surface‐Initiated ATRP to Prepare Poly(methyl methacrylate)‐Grafted Carbon Nanotubes and Its Effect on Poly(vinylidene fluoride)–Carbon Nanotube Composite Properties

Song

Xia

Wei

et al. 2019

Macro Materials & Eng

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NanocompositesPoly(methyl methacrylate)-grafted carbon nanotubes (PMMA@MWCNTs) are nondestructively prepared via the integration of mussel-inspired polydopamine (PDA) chemistry and the surface-initiated atom transfer radical poly merization (ATRP) method. The structures and properties of the poly(vinylidene fluoride)-based (PVDF-based) nanocomposites filled with pristine MWCNTs and PMMA@MWCNTs are investigated. The results show that the encapsulation of PMMA on the MWCNTs surface not only improves the dispersibility of MWCNTs in the PVDF matrix but also enhances the interfacial interaction between MWCNTs and PVDF. The addition of PMMA@MWCNTs nanofillers to PVDF can effectively induce the crystal structure of PVDF to transform from the α-phase to the β/γ -phase, and nearly 100% β/γ -phase PVDF formed when the nanofiller loading is higher than 5 wt%. Compared with the MWCNTs/PVDF composites, the PMMA@MWCNTs/PVDF composites exhibit obvious improvement in the percolation threshold because the PMMA shells hinder the direct contact of the MWCNTs. Moreover, the loss tangent of the PMMA@MWCNTs/PVDF composites is effectively suppressed due to the reduced leakage current in the composites and the enhanced interfacial strength between the nanofiller and the matrix.

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A Roadmap Review of Thermally Conductive Polymer Composites: Critical Factors, Progress, and Prospects

Wang

Weng

et al. 2023

Adv Funct Materials

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Recently, the need for miniaturization and high integration have steered a strong technical wave in developing (micro‐)electronic devices. However, excessive amounts of heat may be generated during operation/charging, severely affecting device performance and leading to life/property loss. Benefiting from their low density, easy processing and low manufacturing cost, thermally conductive polymer composites have become a research hotspot to mitigate the disadvantage of excessive heat, with potential applications in 5G communication, electronic packaging and energy transmission. By far, the reported thermal conductivity coefficient (λ) of thermally conductive polymer composite is far from expectation. Deeper understanding of heat transfer mechanism is desired for developing next generation thermally conductive composites. This review holistically scopes current advances in this field, while giving special attention to critical factors that affect thermal conductivity in polymer composites as well as the thermal conduction mechanisms on how to enhance the λ value. This review covers critical factors such as interfacial thermal resistance, chain structure of polymer, intrinsic λ value of different thermally conductive fillers, orientation/configuration of nanoparticles, 3D interconnected networks, processing technology, etc. The applications of thermally conductive polymer composites in electronic devices are summarized. The existing problems are also discussed, new challenges and opportunities are prospected.

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Nondestructive functionalization of carbon nanotubes by combining mussel-inspired chemistry and RAFT polymerization: Towards high dielectric nanocomposites with improved thermal management capability

Cited by 46 publications

References 49 publications

Synergetic enhancement of mechanical and electrical strength in epoxy/silica nanocomposites via chemically-bonded interface

Synergetic enhancement of mechanical and electrical strength in epoxy/silica nanocomposites via chemically-bonded interface

Integration of PDA Chemistry and Surface‐Initiated ATRP to Prepare Poly(methyl methacrylate)‐Grafted Carbon Nanotubes and Its Effect on Poly(vinylidene fluoride)–Carbon Nanotube Composite Properties

A Roadmap Review of Thermally Conductive Polymer Composites: Critical Factors, Progress, and Prospects

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