Study of the absorption coefficient of graphene-polymer composites

Żerańska-Chudek, Klaudia; Łapińska, Anna; Wróblewska, Anna; Judek, Jarosław; Dużyńska, Anna; Pawłowski, M.; Witowski, A. M.; Zdrojek, Mariusz

doi:10.1038/s41598-018-27317-0

Cited by 67 publications

(48 citation statements)

References 62 publications

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“…The IR absorption properties of graphene materials were used mostly for biomedical applications, such as photothermal therapy [24,25]. Adding graphene to polymers can enhance their electrical, mechanical and optical properties [26][27][28][29]. Combining rGO possessing high IR absorption properties with PVA can result in a material with good infrared radiation shielding.…”

Section: Introductionmentioning

confidence: 99%

Graphene Oxide with Controlled Content of Oxygen Groups as a Filler for Polymer Composites Used for Infrared Radiation Shielding

Mazurkiewicz-Pawlicka

Nowak

Małolepszy

et al. 2019

Nanomaterials

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Infrared (IR) shielding materials are commonly used for different applications, such as smart windows or optical filters. Infrared radiation is responsible for about 50% of the energy coming from the sun. During a hot summer or cold winter a lot of energy is needed to keep the optimal temperature inside buildings and means of transport. To reduce the heat transmission and save energy IR shielding materials can be used as coatings made of polymer composites. Graphene oxide (GO) and its reduced forms have interesting IR absorption properties and might be used as a filler in a polymer matrix for IR shielding applications. Graphene oxide can be reduced by different methods. Depending on the reduction method reduced graphene oxide (rGO) with a different content of oxygen can be obtained exhibiting different properties. In this work we propose new polymer nanocomposites with poly(vinyl alcohol) as the matrix and 0.1 wt.% addition of graphene materials with different oxygen content to be used for IR shielding applications. The results show that the properties of the graphene filler strongly influence the infrared shielding properties of the obtained nanocomposites. The best IR shielding properties were obtained for the composites where rGO with the lowest oxygen content was used.

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Section: Introductionmentioning

confidence: 99%

Graphene Oxide with Controlled Content of Oxygen Groups as a Filler for Polymer Composites Used for Infrared Radiation Shielding

Mazurkiewicz-Pawlicka

Nowak

Małolepszy

et al. 2019

Nanomaterials

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“…With the addition of PDMS in VACNT array, the absorption is enhanced to more than 98% for UV–Vis wavelength and more than 94% in the NIR wavelength range, as observed from Figure . Even with an absorption capacity of 94% at higher wavelengths, the fabricated PDMS‐VACNT composite absorption is found to be higher than many optical absorbers fabricated recently . Ultra‐high absorption observed in PDMS‐VACNT composite originates from the impedance matching provided by the VACNTs ( n = 1.17) when infiltrated in PDMS ( n = 1.6).…”

Section: Resultsmentioning

confidence: 86%

“…However, due to their limitations such as narrow bandwidth, complex structure, and costly fabrication routes, these absorbers find limited application. To overcome these issues, efforts have been made to fabricate near perfect optical absorber coating using nanomaterials . Among these, carbon‐based nanomaterials finds huge potential in the fabrication of ultra‐black absorbers due to their exciting combination of properties .…”

Section: Introductionmentioning

confidence: 99%

“…For real life applications, absorber needs to be flexible in nature so that it can be mounted on any surface having different curvatures without any damage or creasing failure. However, fabrication of flexible absorber having a high absorption capacity (more than 99%) is still a challenging task . To overcome these challenges, VACNT array is used for the fabrication of flexible absorber in the present work.…”

Section: Introductionmentioning

confidence: 99%

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Near perfect thin film flexible broadband optical absorber with high thermal/electrical conductivity

Ghai

Singh

Agnihotri

2019

J of Applied Polymer Sci

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Flexible ultra-black absorber with high thermal/electrical conductivity finds huge applications in the field of stray light attenuation, solar collectors, flexible electronics, and electronic thermal management systems. In this work, we report the fabrication of ultrablack absorber consists of vertically aligned carbon nanotubes (VACNT) in Polydimethylsiloxane (PDMS) having an absorption capacity of more than 98% in UV-Vis wavelength and more than 94% in NIR wavelength range. It is observed that the PDMS-VACNT composite shows ultra-high absorption capacity due to enhanced impedance matching and multiple scattering. In addition to this, the PDMS-VACNT composite shows an emissivity of 0.94 along with a 118% increase in thermal conductivity. Moreover, with the infiltration of VACNT in PDMS, the sheet resistance decrease drastically to 0.08 KΩ/sq, which signify the possible use of ultrablack absorber in electronic skin and flexible sensors etc.

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“…Development of the principles of obtaining polymer nanocomposites is actual [2], the creation of which is based on fundamental research of physico-chemical processes of formation of materials and their structure at the atomic level, which ensures the possibility of obtaining nanocomposites with predefined functional properties. A number of papers shows the effectiveness of using compounds of different chemical nature, having a uniform size as modifiers of polymer matrices [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Quantumchemical study on the interaction of carbon nanotube with polyethylene and polypropylene oligomers

Terets¹,

Demianenko²,

Zhuravsky³

et al. 2019

Him. Fiz. Tehnol. Poverhni

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The results of the study on the properties of carbon nanotubes-polymer nanocomposites have shown that the use of nanotubes (CNT) to fill the polymer matrices of different species significantly alter their physical properties compared to the original polymers. However, the influence of CNT on the properties of nanocomposites obtained at the molecular level has not been completely ascertained yet. Therefore, the purpose of this work was to examine the interaction of CNT with fragments of polymers with the same nature, but the different structure, for example, polyethylene and polypropylene using quantum chemistry.By method of density functional theory with the exchange-correlation functional B3LYP, the basis set 6-31G(d,p) and the Grimme dispersion correction, the energy values have been calculated of interaction between carbon nanotube fragments and oligomers of polyethylene and polypropylene, the most probable structures of their intermolecular complexes being optimized.A graphene-like plane of 40 carbon atoms and 16 atoms of hydrogen was chosen as a model for the outer surface of the multi-walled nanotubes (MWNT). In addition to the above described, two larger models were used, with the general formula C 54 H 18 and C 96 H 24 in order to take into account the dimensional effect of the surface of the nanotube fragment model on the interaction energy.It has been found that the interaction energy of a carbon nanotube fragment with an oligomer of polypropylene is greater, compared with polyethylene, which is consistent with the experimental data on melting temperatures of pure polymers and nanotube-polymer composites.The polymer with an outer surface of a carbon nanotube forms an intermolecular complex do not bound covalently and retained by intermolecular dispersion forces. Oligomers of polymeric matters and nanotube surfaces in nanocomposites formed are located closer to each other than separate polymeric links between them.

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Study of the absorption coefficient of graphene-polymer composites

Cited by 67 publications

References 62 publications

Graphene Oxide with Controlled Content of Oxygen Groups as a Filler for Polymer Composites Used for Infrared Radiation Shielding

Graphene Oxide with Controlled Content of Oxygen Groups as a Filler for Polymer Composites Used for Infrared Radiation Shielding

Near perfect thin film flexible broadband optical absorber with high thermal/electrical conductivity

Quantumchemical study on the interaction of carbon nanotube with polyethylene and polypropylene oligomers

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