Reactive Spark Plasma Synthesis of Porous Bioceramic Wollastonite

Папынов, Е. К.; Shichalin, O.O.; Buravlev, I. Yu.; Белов, А.А.; Maiorov, V. Yu.; Skurikhina, Yu. E.; Merkulov, E. B.; Glavinskaya, V. O.; Nomerovskii, Alexey D.; Golub, A. V.; Шапкин, Н. П.

doi:10.1134/s0036023620020138

Cited by 30 publications

(9 citation statements)

References 27 publications

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“…The most important property in determining the practical application of composite materials in medicine is wettability, which is related to roughness, adhesion, and surface chemistry [ 17 ]. Plasma treatment is an effective method for surface modification of polymer and composite materials in terms of surface activation and improved biocompatibility [ 18 , 19 , 20 ]. Low-temperature plasma treatment of polymers leads to breaking of the polymer chain, accompanied by oxidation of the surface and the formation of new functional groups, which increase the hydrophilicity of the material [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Nitrogen Plasma Treatment of Composite Materials Based on Polylactic Acid and Hydroxyapatite

Khomutova,

Korzhova,

Bryuzgina

et al. 2024

Polymers

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The effect of surface modification by an arc discharge plasma in a nitrogen flow with treatment durations of 5 and 10 min on the physicochemical properties and biocompatibility of the surface of composites based on polylactic acid and hydroxyapatite (PLA/HA) with different mass ratios (80/20, 70/30, 60/40) has been investigated. The aim of this work was to show the correlation between the changes of the physicochemical characteristics (chemical compound, morphology, wettability) of the surface layer of the PLA/HA composites and the cell viability (macrophages) in the presence of the plasma-modified materials. The dependence of alterations of the functional properties (wettability, biocompatibility) on the change in the chemical composition under the plasma exposure has been established. The chemical composition was studied using X-ray photoelectron spectroscopy (XPS), the surface morphology was researched with scanning electron microscopy (SEM), and the wettability of the composite’s surface was analyzed by measuring the contact angle and surface energy calculation. In addition, the viability of macrophages was investigated when the macrophages from three donors interacted with a modified PLA/HA surface. It was found that the formation of the new functional groups, –C-N and N-C=O/C=O, improves the wettability of the surface of the composites and promotes the viability of macrophages in the presence of the composite materials. The fundamental principles for obtaining promising materials with the required properties for eliminating bone defects have been created.

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Section: Introductionmentioning

confidence: 99%

Nitrogen Plasma Treatment of Composite Materials Based on Polylactic Acid and Hydroxyapatite

Khomutova,

Korzhova,

Bryuzgina

et al. 2024

Polymers

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“…The synthesis of metastable materials with the preservation of this state is provided. The control of phase transformations is achieved by eliminating or initiating solid-phase chemical interactions during material processing [25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Ti-Cu Multiphase Alloy by Spark Plasma Sintering: Mechanical and Corrosion Properties

Shichalin

Sakhnevich

Buravlev

et al. 2022

Metals

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To study the material based on the binary system Ti + Cu (50% atm), samples were produced from powders of commercially pure metals and additionally ground in a ball mill (final size about 12 µm) by spark plasma sintering. The following intermetallic phases were obtained in the materials: CuTi2, TiCu, and Ti3Cu4. The materials have a hardness of 363 and 385 HV (800 and 900 °C), a microhardness of 393 and 397 µHV, a density of 4.24 and 5.23 kg/m3, and resistance to corrosion in acids (weight gain + 0.002% after 24 h of testing according to ISO 16151 for a sample with 900 °C—the best result in comparison with steel 308, AA2024, CuA110Fe3Mn2). The hardness value varies due to the presence of pure metal agglomerates. The relationship between the temperature of spark plasma sintering and the characteristics of the material (material parameters improve with increasing temperature, segregation is reduced) is revealed.

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“…For WC alloys, the SPS method, compared to traditional sintering methods, demonstrates the smallest grain size, the highest hardness, the lowest fracture toughness [ 54 ]. The application of the SPS technology makes it possible to reduce the sintering temperatures by 200 °C, which preserves the WC grain size, uses alternative molds [ 55 ], and provides reactive synthesis [ 56 ]. Considerable experience has been accumulated in using traditional and modern methods of sintering WC-Co nanopowders produced by plasma chemical synthesis [ 57 ].…”

Section: Introductionmentioning

confidence: 99%

Spark Plasma Sintering of WC-Based 10wt%Co Hard Alloy: A Study of Sintering Kinetics and Solid-Phase Processes

et al. 2022

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The paper describes the method for producing WC-10wt%Co hard alloy with 99.6% of the theoretical density and a Vickers hardness of ~1400 HV 0.5. Experimental data on densification dynamics, phase composition, morphology, mechanical properties, and grain size distribution of WC-10%wtCo using spark plasma sintering (SPS) within the range of 1000–1200 °C are presented. The high quality of the product is provided by the advanced method of high-speed powder mixture SPS-consolidation at achieving a high degree of densification with minimal calculated grain growth at 1200 °C.

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Reactive Spark Plasma Synthesis of Porous Bioceramic Wollastonite

Cited by 30 publications

References 27 publications

Nitrogen Plasma Treatment of Composite Materials Based on Polylactic Acid and Hydroxyapatite

Nitrogen Plasma Treatment of Composite Materials Based on Polylactic Acid and Hydroxyapatite

Synthesis of Ti-Cu Multiphase Alloy by Spark Plasma Sintering: Mechanical and Corrosion Properties

Spark Plasma Sintering of WC-Based 10wt%Co Hard Alloy: A Study of Sintering Kinetics and Solid-Phase Processes

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