Synthesis and properties of nanocomposite materials based on ultra-high-molecular-weight polyethylene and graphite nanoplates

Бревнов, П. Н.; Kirsankina, G. R.; Zabolotnov, A. S.; Крашенинников, В. Г.; Гринев, В. Г.; Berezkina, N. G.; Sinevich, E. A.; Щербина, М. А.; Новокшонова, Л. А.

doi:10.1134/s1811238216010021

Cited by 16 publications

(4 citation statements)

References 38 publications

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“…We associate the appearance of a texture in samples with a polyethylene content of 20−80% with the peculiarity of their growth mentioned above. Indeed, as shown in Figure S1, the intensity ratio for the peaks of UHMWPE grown on the surface of nanographite particles 52 corresponds to the tabulated data and equals I(001 mo )/I(110 or ) = 1/5. In our case, the I(001 mo )/I(110 or ) value is 1/2 for the rGO/UHMWPE 50% composite and 1 for rGO/UHMWPE 20%.…”

Section: ■ Results and Discussionmentioning

confidence: 71%

“…The choice of parameters was based on the data from (JCPDS-International Center for Diffraction Data (http:// www.icdd.com) Powder Diffraction File ICCD PDF-2 release), since they are in good agreement with our experimental data, as can be seen from Figures S1−3. This method of quantitative analysis of the UHMWPE structure was successfully tested previously 52 where all the phases found were considered as crystalline (with narrow 2θ reflections) and nanocrystalline (with broad amorphous reflections).…”

Section: = × × [ ] Mmentioning

confidence: 99%

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Template-Directed Polymerization Strategy for Producing rGO/UHMWPE Composite Aerogels with Tunable Properties

Gudkov

Бревнов

Rabchinskii

et al. 2023

ACS Appl. Mater. Interfaces

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In this paper, we suggest a previously unknown templatedirected polymerization strategy for producing graphene/polymer aerogels with elevated mechanical properties, preservation of the nanoscale pore structure, an extraordinary crystallite structure, as well as tunable electrical and hydrophobic properties. The suggested approach is studied using the reduced graphene oxide (rGO)/ultrahigh molecular weight polyethylene (UHMWPE) system as an example. We also develop a novel method of ethylene polymerization with formation of UHMWPE directly on the surface of rGO sheets prestructured as the aerogel template. At a UHMWPE content smaller than 20 wt %, composite materials demonstrate completely reversible deformation and good conductivity. An ultrahigh polymer content (more than 80 wt %) results in materials with pronounced plasticity, improved hydrophobic properties, and a Young's modulus that is more than 200 times larger than that of pure rGO aerogel. Variation of the polymer content makes it possible to tune the electro-conductive properties of the aerogel in the range from 4.8 × 10 −6 to 4.9 × 10 −1 S/m and adjust its hydrophobic properties. The developed approach would make it possible to create composite materials with highly developed nanostructural morphology and advanced properties controlled by the thickness of the polymer layer on the surface of graphene sheets.

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Section: ■ Results and Discussionmentioning

confidence: 71%

Section: = × × [ ] Mmentioning

confidence: 99%

Template-Directed Polymerization Strategy for Producing rGO/UHMWPE Composite Aerogels with Tunable Properties

Gudkov

Бревнов

Rabchinskii

et al. 2023

ACS Appl. Mater. Interfaces

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“…greater elasticity, reduced flammability, improved barrier properties, e.g. less vapour and gas permeability, better thermal stability, and flexibility and resistance to fatigue [5][6][7][8][9][10][11][12][13][14][15][16][17]. The possibility of obtaining products with desired properties of the band opens up new prospects for application.…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Gnatowski,

Gołębski,

Stachowiak

2020

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The aim of this study was to present the results of the examinations of the structure and thermomechanical properties of PA6/ NanoBent composite. NanoBent composites composed of minerals from the smectite group (mainly montmorillonite) were used for modification of polyamide 6. PA6 composite with content of 1, 3, 5% of NanoBent was prepared in a Theysohn Tsk 75-N twin screw extruder. The samples were prepared using the injection technology by means of a krauss-Maffei kM65-160 C1 injection molding machine. The samples of composites obtained at different injection temperatures and injection mold temperatures were used for the examinations. Degree of crystallinity was examined using the DsC method whereas the material structure was examined with an optical microscope. DsC studies showed a reduction in the value of the degree of crystallinity with the increasing content of nanofiller in the polymer material. The narrowing of the peak was recorded in the DsC thermograms for nanocomposites with greater percentage of the nanofiller. Dynamical properties of polyamide 6 nanocomposite were also determined in relation to temperature and frequency. The samples were bended at frequencies of 1 hz and 10 hz over the temperature range from -100°C to 180°C and the heating rate of 2k/min. A significant increase in storage modulus was observed for PA6 samples with the content of 5% of NanoBent obtained at the injection temperature of 270°C and mold temperature of 70°C. smaller size of spherulites and arrangement of structural elements in clusters along the line of polymeric material flow in the mold cavity at higher contents of NanoBent were observed during structural examinations of the composites.

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“…Two main methodologies have been commonly adopted in the preparation of polyethylene/graphite nanocomposites such as the melting compounding, and intercalation in solution . Recently, considerable attention has been paid to the polymerization‐filling technique (PFT) namely also as “ in situ polymerization process.” According to this methodology, the nanocomposite material is produced via polymerization of the ethylene in the presence of graphite. This approach provides a uniform distribution of filler particles in the polymer matrix, and a considerably enhanced interfacial adhesion, as a result of the extended deagglomeration of the filler particles and their intimate coating by the polymer .…”

Section: Introductionmentioning

confidence: 99%

High‐density polyethylene/expanded graphite nanocomposites produced by polymerization‐filling technique using an industrial heterogeneous catalyst

Cruz¹,

Casagrande

2017

J. Polym. Sci. Part A: Polym. Chem.

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High-density polyethylene nanocomposites with different expanded graphite (EG) contents (0.34-1.80 wt %) were prepared by polymerization-filling technique using an industrial heterogeneous catalyst (cat K), and characterized using a range techniques: melting flow index (MFI), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and transmission electron microscopy (TEM). The MFI data showed that EG acts as a plasticizer decreasing melt viscosity in comparison to neat HDPE produced exclusively by cat K. DSC results showed that EG nucleated the HDPE crystallization as established by the increased crystallization temperature, and the degree of crystallinity. HDPE/EG nanocomposites displayed a significant improvement in the flexural (increased from 1458 to 1831 MPa), and storage modulus (increased from 122 to 1627 MPa) at only 1.80 wt % EG content. TEM images confirmed a homogeneous distribution of EG into the polymer matrix with the presence of dispersed, intercalated and aggregated EG nanofillers.

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Synthesis and properties of nanocomposite materials based on ultra-high-molecular-weight polyethylene and graphite nanoplates

Cited by 16 publications

References 38 publications

Template-Directed Polymerization Strategy for Producing rGO/UHMWPE Composite Aerogels with Tunable Properties

Template-Directed Polymerization Strategy for Producing rGO/UHMWPE Composite Aerogels with Tunable Properties

Archives of Metallurgy and Materials

High‐density polyethylene/expanded graphite nanocomposites produced by polymerization‐filling technique using an industrial heterogeneous catalyst

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