Fabrication of multi-walled carbon-nanotube-grafted polyvinyl-chloride composites with high solar-thermal-conversion performance

Shen, Xing; Ji, Minzun; Zhang, Shiming; Qin, Yujun; Zhang, Pu; Wang, Yapei; Guo, Zhi‐Xin; Pan, Mingwang; Zhang, Zuoqi

doi:10.1016/j.compscitech.2018.11.029

Cited by 15 publications

(8 citation statements)

References 43 publications

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“…The MWNTs-g-C 16 was well dispersed with a random three-dimensional network-like arrangement. TEM image of the PVC/MWNTs-g-C 16 composite material shows that MWNTs have the same state of morphology as that of the MWNT-g-PVC, another kind of solar-thermal material prepared by this research group [32]. As Ornatska [33] concluded, the functionalization of CNTs was an important mean to improve the solubility and dispersion of CNTs in solvents and polymer matrix.…”

Section: Electron Microscopymentioning

confidence: 70%

“…The maximum temperature of the samples increased linearly with an increase in the MWNTs-g-C 16 content. The slope of this straight line was far less than that of the MWNT-g-PVC(229.97) line, another kind of solar-thermal material prepared by our research group [32]. Although the solar-thermal conversion efficiency of the PVC/MWNTs-g-C 16 prepared using melt bending was lower than that of the MWNT-g-PVC composites prepared using chemical grafting, this method is simple and feasible.…”

Section: Solar-thermal Conversion Characteristicsmentioning

confidence: 75%

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Fabrication of PVC/MWNTs-g-C16 composites with high solar-thermal conversion performance for anti-icing and deicing

Shen¹,

LiHuan²,

Wei³

et al. 2020

ScienceAsia

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In this study, an easy method is presented to prepare a polymer based multi-walled carbon nanotube (MWNT) composite. First, MWNTs grafted to n-hexadecyl bromide (MWNTs-g-C 16 ) were prepared using an esterification reaction of carboxylate salt on the MWNTs' surface and a bromine group consisting of n-hexadecyl bromide in the presence of a phase-transfer reagent in water. Subsequently, a composite material of PVC/MWNTs-g-C 16 was prepared by melt blending with a series of dissolvable MWNTs-g-C 16 aided by heat stabilizers and lubricants. Thermogravimetric analysis of the MWNTs-g-C 16 showed a weight percentage of attached alkyl chains as high as 35.77 wt%, and a TEM image proved that the soluble MWNTs-g-C 16 were well dispersed randomly in a matrix of polyvinyl chloride (PVC). Solar-thermal conversion performances of the PVC/MWNTs-g-C 16 composites were studied, and the composites exhibited excellent light absorption properties. This property is attributed to the optical absorption characteristics of MWNTs. The PVC/MWNTs-g-C 16 composite material exhibits excellent mechanical properties, and could be used as solar collectors or as solar anti-icing and deicing materials.

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Section: Electron Microscopymentioning

confidence: 70%

Section: Solar-thermal Conversion Characteristicsmentioning

confidence: 75%

Fabrication of PVC/MWNTs-g-C16 composites with high solar-thermal conversion performance for anti-icing and deicing

Shen¹,

LiHuan²,

Wei³

et al. 2020

ScienceAsia

Self Cite

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“…Additionally, as the content of GnF increases, the surface becomes denser, which might suppress the penetration of light and promote direct reflection of the incident light. Many of the prior studies have correlated the reflectance of the composites with their density and indicated that greater density leads to higher reflectance. ,, The anomaly of higher reflectance corresponding to 1 wt % GnF (compared to 2 wt %) can be explained by the sea–island structure of the composites . The PDMS polymer matrix and scarcely distributed GnF are considered the sea and island, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…24,36,37 The anomaly of higher reflectance corresponding to 1 wt % GnF (compared to 2 wt %) can be explained by the sea−island structure of the composites. 30 The PDMS polymer matrix and scarcely distributed GnF are considered the sea and island, respectively. At a lower weight percentage of GnF, the small islands representing GnF separated by PDMS form fewer boundaries and interfaces.…”

Section: Optical and Photothermal Studies Of Gnf/pdms Nanocomposite F...mentioning

confidence: 99%

“…Nanostructure design and exfoliation of natural graphite structures have presented new opportunities to augment its absorption and compatibility with polymer matrixes. Three major categories of PDMS-based nanocomposites have previously been reported in the literature as solar absorbers. ,,,, The first kind is flexible composite films with a thickness in the millimeter range. For example, graphene flakes, graphite powder, and CNTs were embedded into PDMS to investigate their photothermal properties.…”

Section: Introductionmentioning

confidence: 99%

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Flexible Graphite Nanoflake/Polydimethylsiloxane Nanocomposites with Promising Solar–Thermal Conversion Performance

Chhetri

Nguyễn

Song

et al. 2023

ACS Appl. Energy Mater.

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Flexible polymer nanocomposites have emerged as promising photothermal materials for various solar energy applications. However, developing photothermal materials meeting low cost, excellent light absorption capability, and facile fabrication processes has remained challenging. Herein, a set of graphite nanoflake (GnF)/polydimethylsiloxane (PDMS) nanocomposites having different concentrations from 1 to 10 wt % GnF are fabricated to find the optimum amount of GnF in a GnF/PDMS nanocomposite for the maximum absorption of solar energy within the entire solar spectrum. The optical and photothermal properties of GnF/PDMS nanocomposite films were found to be optimum at 3 wt % GnF/PDMS. Specifically, the total solar absorption is 94.8 ± 0.20%, outperforming most of the previous flexible carbon-based polymer nanocomposites. As an example of the potential application of optimized GnF/PDMS nanocomposites, a floatable interfacial water evaporator was developed by dip-coating GnF/PDMS on polyurethane (PU) foam. The coated PU at 1 wt % GnF/PDMS yields an evaporation rate of 1.14 Kg/m2·h and solar–vapor conversion efficiency of 68.2% under 1 sun illumination. The advantages of stable coating of GnF/PDMS nanocomposites and their excellent photothermal effect will benefit various solar-powered applications such as desalination, purification, and steam generation.

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Thermal/Near‐Infrared Light Dual‐Responsive Reconfigurable and Recyclable Polythiourethane/CNT Composite with Simultaneously Enhanced Strength and Toughness

Zhao

Yue

Huang

et al. 2022

Macromol. Rapid Commun.

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Thermoset polymers cross‐linked by dynamic covalent bonds are recyclable and reconfigurable based on solid‐state plasticity, resulting in less waste and environmental pollution. However, most thermoset polymers previously reported show thermal‐responsive solid‐state plasticity, depending much on external conditions and not allowing for local shape modulation. Herein, the isocyanate modified carbon nanotubes (CNTs‐NCO) are introduced into the polythiourethane (PCTU) network with multiple dynamic covalent bonds by in situ polymerization to prepare the composite with thermal/light dual‐responsive solid‐state plasticity, reconfigurability, and recyclability. The introduction of CNTs‐NCO simultaneously strengthens and toughens the PCTU composite. Moreover, based on the photothermal properties and light‐responsive solid‐state plasticity, the PCTU/CNTs composite or bilayer sample can achieve complex permanent shape by locally precise shape regulation without affecting other parts. This work provides a simple and reliable method for preparing high‐performance polymer composite with light‐responsive solid‐state plasticity, which may be applied in the fields of sensing and flexible electronics.

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Fabrication of multi-walled carbon-nanotube-grafted polyvinyl-chloride composites with high solar-thermal-conversion performance

Cited by 15 publications

References 43 publications

Fabrication of PVC/MWNTs-g-C16 composites with high solar-thermal conversion performance for anti-icing and deicing

Fabrication of PVC/MWNTs-g-C16 composites with high solar-thermal conversion performance for anti-icing and deicing

Flexible Graphite Nanoflake/Polydimethylsiloxane Nanocomposites with Promising Solar–Thermal Conversion Performance

Thermal/Near‐Infrared Light Dual‐Responsive Reconfigurable and Recyclable Polythiourethane/CNT Composite with Simultaneously Enhanced Strength and Toughness

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