Thermal conductivity enhancement of poly(3-hydroxylbutyrate) composites by constructing segregated structure with the aid of poly(ethylene oxide)

Li, Zonglin; Kong, Junjun; Ju, Dandan; Cao, Zengwen; Han, Lijing; Dong, Lisong

doi:10.1016/j.compscitech.2017.06.028

Cited by 33 publications

(8 citation statements)

References 41 publications

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“…It is found that the BN-PEO-PVDF electrolyte has considerably higher 𝛼 and 𝜅 values than the PEO-PVDF one, which is attributed to the high thermal conductive nature of BN. [36] The thermal and electrical parameters of the electrolytes and BN are shown in Table S2 in the Supporting Information. We carried out thermal testing on PEO-PVDF and BN-PEO-PVDF films and their temperature changes were recorded by infrared (IR) images in Figure 3b Electrochemical behaviors of Li anode with PEO-PVDF and BN-PEO-PVDF electrolytes are characterized in Li-Cu asymmetric cells in Figure 3d.…”

Section: Doi: 101002/advs202001303mentioning

confidence: 99%

Thermal Conductive 2D Boron Nitride for High‐Performance All‐Solid‐State Lithium–Sulfur Batteries

et al. 2020

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Polymer-based solid-state electrolytes are shown to be highly promising for realizing low-cost, high-capacity, and safe Li batteries. One major challenge for polymer solid-state batteries is the relatively high operating temperature (60-80°C), which means operating such batteries will require significant ramp up time due to heating. On the other hand, as polymer electrolytes are poor thermal conductors, thermal variation across the polymer electrolyte can lead to nonuniformity in ionic conductivity. This can be highly detrimental to lithium deposition and may result in dendrite formation. Here, a polyethylene oxide-based electrolyte with improved thermal responses is developed by incorporating 2D boron nitride (BN) nanoflakes. The results show that the BN additive also enhances ionic and mechanical properties of the electrolyte. More uniform Li stripping/deposition and reversible cathode reactions are achieved, which in turn enable all-solid-state lithium-sulfur cells with superior performances.

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Section: Doi: 101002/advs202001303mentioning

confidence: 99%

Thermal Conductive 2D Boron Nitride for High‐Performance All‐Solid‐State Lithium–Sulfur Batteries

et al. 2020

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“…Recently, boron nitride nanosheets (BNNSs) have attracted extensive interest in the preparation of high-performance polymer composites with desirable electrical insulation and high thermal conductivity (TC) because of their high theoretical thermal conductivity (600 W m –1 K –1 ) and band gap (∼5.5 eV). − In order to achieve a significant TC enhancement, building a continuous segregated 3D-BNNS network in a polymer matrix is very necessary. − While for the composites prepared by the conventional blending methods, due to the inevitable agglomeration of BNNSs, a large amount of filler (above 30 vol %) is always needed to form a continuous BNNS network in the polymer matrix, thereby leading to the considerable polymer/filler interfacial thermal resistance and low TC enhancement efficiency. − Although surface modification can observably improve the dispersion of BNNSs as well as reduce the thermal resistance cross the polymer/filler interface, the composite’s TC enhancement efficiency is still not desirable enough. − …”

Section: Introductionmentioning

confidence: 99%

3D Vertically Aligned BNNS Network with Long-Range Continuous Channels for Achieving a Highly Thermally Conductive Composite

Wang

2019

ACS Appl. Mater. Interfaces

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Construction of a three-dimensional (3D) vertically aligned filler network in a polymer matrix has been believed to be an effective method to attain a large through-plane thermal conductivity enhancement at relatively low filler loading. However, it is still a challenge to construct a vertically aligned filler network composed of many long-range continuous pore channels in a polymer matrix for the high-flux heat-conduction. To address this problem, herein, nanofibrillated cellulose (NFCs) assisted unidirectional freeze-drying of a boron nitride nanosheets (BNNSs) slurry was used to prepare a novel epoxy composite containing a 3D vertically aligned BNNS network with long-range continuous pore channels. The vertically aligned and nacre-mimetic channels make the composite possess a high through-plane thermal conductivity of 1.56 W m −1 K −1 at an extremely low BNNSs loading of 4.4 vol %, and a significant thermal conductivity enhancement efficiency of 167.3 per 1 vol % filler. Therefore, we think this work is expected to give a significant insight into the preparation of polymer composite with high heat-conduction efficiency to address the heat dissipation of modern electronics.

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“…Comparison of in-plane TC vs hBN loading between our sample and literature that was reinforced by hBN ,,− and other conductive fillers. − …”

Section: Resultsmentioning

confidence: 79%

“…In order to directly estimate the effect of PiF-SS on TC enhancement, we collected several recently reported segregated structured polymeric thermal conductors ,,− for comparison. In Figure , we showed the in-plane TC value versus filler loading of each sample for comparison.…”

Section: Resultsmentioning

confidence: 99%

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From Waste to Wealth: Upcycling Waste Polypropylene/Polyethylene for Thermal Management via Pressure-Induced, Flow-Enhanced Segregated Structurizing with Hexagonal Boron Nitride

Huang

Liu²,

Huang

et al. 2023

Ind. Eng. Chem. Res.

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The low value of recycled products is the main roadblock for sustainable development of polymers. In this work, waste polypropylene and waste polyethylene were chosen to be recycled for value-added thermal management with the addition of hexagonal boron nitride (hBN). Through specific design of melt flow indexes (MFIs), we proposed a novel pressure-induced, flow-enhanced segregated structurization (PiF-SS) process. The segregated structures were visually confirmed by various microscopies at different scales. The highest in-plane thermal conductivities of ∼7.48 W/mk was obtained for the sample with a low hBN loading of 20 wt %. Ultimately, we evaluated the thermal management performance of all samples with various compositions. In this work, we believe that the concept of combinational utilization of a high-MFI polymer and a low-MFI polymer to perform PiF-SS can not only work for the sustainable reuse of waste polymers but also be used for manufacturing advanced functional materials.

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Thermal conductivity enhancement of poly(3-hydroxylbutyrate) composites by constructing segregated structure with the aid of poly(ethylene oxide)

Cited by 33 publications

References 41 publications

Thermal Conductive 2D Boron Nitride for High‐Performance All‐Solid‐State Lithium–Sulfur Batteries

Thermal Conductive 2D Boron Nitride for High‐Performance All‐Solid‐State Lithium–Sulfur Batteries

3D Vertically Aligned BNNS Network with Long-Range Continuous Channels for Achieving a Highly Thermally Conductive Composite

From Waste to Wealth: Upcycling Waste Polypropylene/Polyethylene for Thermal Management via Pressure-Induced, Flow-Enhanced Segregated Structurizing with Hexagonal Boron Nitride

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