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Glass with a low-melting temperature belonging to the P2O5–CaO–Na2O system, applied as a coating on technical ceramics (alumina, zirconia) and traditional ceramics (porcelain stoneware) 属于P2O5–CaO–Na2O系统的低熔融温度玻璃,用作工业陶瓷(氧化铝、氧化锆)和传统陶瓷(陶瓷石)的涂层
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2024-03-01 DOI: 10.1016/j.bsecv.2023.07.003
Luis Antonio Díaz , Marta Suárez , Jose Florindo Bartolomé , Sonia Lopez-Esteban , Belén Cabal , Arnaldo Moreno , María del Carmen Bordes , Adolfo Fernández , Carlos Pecharromán , José Serafin Moya

This article investigates the development and potential applications of low-melting point lead-free glasses. Their importance is due to strong market demands to comply with the strict international regulations against the use of lead. In this work, a preliminary study of the existing interactions of a low-melting-temperature glass belonging to the P2O5–CaO–Na2O system when it is deposited on different ceramic substrates, both traditional (porcelain stoneware) and technical (alumina and zirconia), has been carried out. The ionic diffusion through the studied interfaces, the phases present, the composition of the glassy phase and the surface morphology of the coating have been studied by Field Emission Scanning Electron Microscopy (FESEM), with coupled EDX microanalysis. The chemical resistance of the different glassy coatings obtained is also evaluated. The results showed that these new lead-free low-melting-temperature glassy coatings are chemically and mechanically compatible, and promising candidates for applications and markets in a broad range of fields.

本文探讨了低熔点无铅玻璃的开发和潜在应用。低熔点无铅玻璃之所以重要,是因为市场强烈要求遵守禁止使用铅的严格国际法规。在这项工作中,我们对属于 P2O5-CaO-Na2O 系统的低熔点玻璃沉积在不同陶瓷基底(传统陶瓷(炻瓷)和技术陶瓷(氧化铝和氧化锆))上时的现有相互作用进行了初步研究。通过场发射扫描电子显微镜(FESEM)和耦合 EDX 显微分析,研究了通过所研究界面的离子扩散、存在的相、玻璃相的组成和涂层的表面形态。此外,还对不同玻璃涂层的耐化学性进行了评估。结果表明,这些新型无铅低温熔融玻璃涂层在化学和机械方面都具有良好的兼容性,有望在广泛的领域中得到应用和市场。
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引用次数: 0
The role of tin and iron in the production of Spanish copper red glass from the 19th to the 20th century 锡和铁在 19 至 20 世纪西班牙红铜玻璃生产中的作用
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2024-03-01 DOI: 10.1016/j.bsecv.2023.07.005
Mingyue Yuan , Jordi Bonet , Hiram Castillo-Michel , Marine Cotte , Nadine Schibille , Bernard Gratuze , Trinitat Pradell

Little is known about the materials used in the manufacture of red window glass in the 19th and the first decade of the 20th century. Here, we have studied fragments from eight Spanish glasses from the 19th and 20th centuries. The red glasses consist of a single layer of red glass on a colourless glass substrate. The chemical composition, oxidation state, nature of colourants and crystalline precipitates were determined by a selection of microanalytical techniques. In the study, we have found that the red colour of the glass is due to the presence of Cu0 nanoparticles, the red glass layer has lower calcium content than the substrate glasses, which we found favours copper being present in the glass predominantly in Cu+. They also contain tin and iron while lead, described in historical and modern documentation, was absent. Tin must have been added to the glass as a Sn2+ compound and acted as a reducing agent for copper. Iron is also a well-known reducing agent, but does not act as such in the red glasses studied here. However, it may have facilitated the reduction of copper to Cu0 by promoting its incorporation into the glass as Cu+ rather than Cu2+.

人们对 19 世纪和 20 世纪头十年制造红玻璃窗所用的材料知之甚少。在这里,我们研究了 19 世纪和 20 世纪的八种西班牙玻璃碎片。这些红色玻璃由无色玻璃基底上的单层红色玻璃组成。化学成分、氧化状态、着色剂和结晶沉淀物的性质是通过精选的微分析技术确定的。在研究中,我们发现玻璃的红色是由于 Cu0 纳米粒子的存在,红色玻璃层的钙含量低于基底玻璃,我们发现这有利于铜在玻璃中主要以 Cu+ 的形式存在。它们还含有锡和铁,而历史和现代文献中描述的铅却不存在。锡一定是以 Sn2+ 化合物的形式添加到玻璃中,作为铜的还原剂。铁也是一种众所周知的还原剂,但在本文研究的红玻璃中并不具有还原作用。不过,铁可能促进了铜以 Cu+ 而不是 Cu2+ 的形式融入玻璃中,从而促进了铜还原成 Cu0。
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引用次数: 0
Investigation of the use of nano-titanium dioxide particles synthesized by reflux method as a whitener agent in standard porcelain tiles 回流法合成的纳米二氧化钛颗粒在标准瓷砖中用作增白剂的研究
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2023.05.001
Neslihan Tamsu Selli , Neslihan Basaran , Ömer Kesmez

The effects of adding zircon and synthesized TiO2 nanoparticles (NPs) to standard porcelain tiles on mechanical and optical properties were studied. The obtained TiO2 nanoparticles had an average particle size of 7.47 nm. The optical properties of TiO2 NPs were characterized by using UV–visible spectrophotometer. The synthesized TiO2 NPs and commercial zircon were added to standard porcelain tile composition at a rate of 1%, 2% and 4% by weight. Phase analyzes of the samples were made with XRD, and microstructure analyzes were made with SEM/EDS. Optical dilatometer test was used for sintering studies and densification behaviour was observed with water absorption test. The optical behaviour of the samples was analyzed using spectrophotometric measurements (CIELab method). As a result of this test, it was observed that nano-sized titanium oxide can be used as a whitening agent in porcelain tiles. In addition, the additives made to porcelain tiles also contributed to the increase in mechanical properties.

研究了在标准瓷片中添加锆石和合成的二氧化钛纳米粒子(NPs)对机械和光学性能的影响。获得的二氧化钛纳米粒子的平均粒径为 7.47 nm。使用紫外-可见分光光度计对 TiO2 NPs 的光学特性进行了表征。将合成的 TiO2 NPs 和商用锆石以 1%、2% 和 4% 的重量比例添加到标准瓷片成分中。用 XRD 对样品进行相分析,用 SEM/EDS 对样品进行微观结构分析。在烧结研究中使用了光学膨胀仪测试,并通过吸水测试观察了致密化行为。使用分光光度法(CIELab 方法)分析了样品的光学特性。测试结果表明,纳米级氧化钛可用作瓷质砖的增白剂。此外,瓷片添加剂也有助于提高机械性能。
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引用次数: 0
Evaluation of the photocatalytic activity of ZnO nanorods and nanoflowers grown from seed layers deposited by spin coating 由旋涂沉积的种子层生长的ZnO纳米棒和纳米花的光催化活性评估
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2023.06.003
Antonia del Rocío López Guemez , Adrián Cordero García , José Luis Cervantes López , Hermicenda Pérez Vidal , Laura Lorena Díaz Flores

The increase in pollution, using photocatalytic materials to degrade organic pollutants remains in force. ZnO is the most used semiconductors for photocatalytic applications. The oriented growth of nanostructures on substrates or seed layers (SL) improves the physical and chemical properties compared to the bulk-grown material. In this work, the photocatalytic efficiency of ZnO nanorods and nanoflowers was evaluated, obtained by hydrothermal growth (HG) over SL deposited by the spin-coating technique (SCT). The characterizations results showed two types of growth: 1D nanostructures with a dimension in the range of 400–1000 nm and diameters of 70–100 nm, and 1D microstructures with approximate 5–11 μm length and diameters of 1–2 μm. However, in the 7 SL system, micro prisms were generated, which led to the formation of 3D nanostructures (micro flowers) of ZnO with a maximum of 6 μm in diameter. The system with 1D and 3D ZnO nanostructures, grown in 7 SL, was the most efficient methylene blue degradation. Achieving 100% transformation in 120 min, with a rate constant of 2.98 × 10−2 min−1. The results show that the SCT deposit combined with the sol–gel method and HG produces 1D and 3D structures with high potential in photocatalytic degradation.

随着污染的加剧,使用光催化材料降解有机污染物的趋势依然存在。氧化锌是光催化应用中使用最多的半导体。与批量生长的材料相比,在基底或种子层(SL)上定向生长的纳米结构能改善其物理和化学特性。在这项研究中,通过在旋涂技术(SCT)沉积的种子层上进行水热生长(HG),评估了氧化锌纳米棒和纳米花的光催化效率。表征结果显示了两种生长类型:尺寸在 400-1000 纳米范围内、直径为 70-100 纳米的一维纳米结构,以及长度约为 5-11 微米、直径为 1-2 微米的一维微结构。然而,在 7 SL 系统中,产生了微棱镜,从而形成了最大直径为 6 μm 的三维纳米氧化锌结构(微花)。在 7 SL 中生长出一维和三维氧化锌纳米结构的系统对亚甲基蓝的降解效率最高。在 120 分钟内实现了 100% 的转化,速率常数为 2.98 × 10-2 min-1。结果表明,SCT 沉积与溶胶-凝胶法和 HG 相结合,可产生一维和三维结构,在光催化降解方面具有很高的潜力。
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引用次数: 0
LIX Congreso Nacional de la Sociedad Española de Cerámica y Vidrio 西班牙陶瓷和玻璃协会 LIX 全国大会
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2024.02.001
Amador C. Caballero
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引用次数: 0
Influencia del polvo de vidrio en el comportamiento ambiental, térmico y mecánico del hormigón que contiene ceniza de cascarilla de arroz 玻璃粉对含稻壳灰混凝土的环境、热和力学性能的影响
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2023.06.004
Óscar Felipe Arbeláez Pérez , Vanessa Senior-Arrieta , Andrés Felipe Rúa Suárez , Jeferson Carvajal Jaramillo , Cristian Arley Lasso Cerón

A large amount of waste glass (WG) and rice husk ash (CCA) is produced yearly. This paper evaluated the effect of incorporating waste glass in concrete prepared with rice husk ash (RHA) as a partial substitute for cement, considering differences in the mechanical and thermal behavior of concrete based on the proportions of WG and CCA. A 5% replacement of cement by ashes of rice husk and waste glass was considered in this work. Concrete samples were prepared with several RHA:WG ratios namely 1:0, 1:1, 1:2, and 1:3 (RHA + WG = 5%). For these concrete samples, the mechanical, thermal, and environmental properties were evaluated, the latter measured in CO2 emissions. Results showed that workability (i.e. slump) and density increased as long as WG content increased. The value of compressive strength of 1:3 mixture was 14% higher than the 1:0 concrete mixture. Moreover, the thermal conductivity was increased by 380% and CO2 emissions were dropped by 5.5%, in comparison to 1:0 concrete mixture. The incorporation of WG improves mechanical and thermal properties and reduces the environmental impact of rice husk ash concrete.

每年都会产生大量废玻璃(WG)和稻壳灰(CCA)。本文评估了在用稻壳灰(RHA)作为水泥的部分替代品配制的混凝土中掺入废玻璃的效果,同时考虑了基于 WG 和 CCA 比例的混凝土机械性能和热性能的差异。本研究考虑了稻壳灰和废玻璃灰替代 5% 水泥的情况。混凝土样品的制备采用了几种 RHA 与 WG 的比例,即 1:0、1:1、1:2 和 1:3(RHA + WG = 5%)。对这些混凝土样品进行了力学、热学和环境性能评估,后者以二氧化碳排放量来衡量。结果表明,只要 WG 含量增加,工作性(即坍落度)和密度就会增加。1:3 混合物的抗压强度值比 1:0 混凝土混合物高 14%。此外,与 1:0 混凝土混合物相比,导热系数提高了 380%,二氧化碳排放量减少了 5.5%。掺入 WG 可改善稻壳灰混凝土的机械和热性能,减少对环境的影响。
{"title":"Influencia del polvo de vidrio en el comportamiento ambiental, térmico y mecánico del hormigón que contiene ceniza de cascarilla de arroz","authors":"Óscar Felipe Arbeláez Pérez ,&nbsp;Vanessa Senior-Arrieta ,&nbsp;Andrés Felipe Rúa Suárez ,&nbsp;Jeferson Carvajal Jaramillo ,&nbsp;Cristian Arley Lasso Cerón","doi":"10.1016/j.bsecv.2023.06.004","DOIUrl":"10.1016/j.bsecv.2023.06.004","url":null,"abstract":"<div><p>A large amount of waste glass (WG) and rice husk ash (CCA) is produced yearly. This paper evaluated the effect of incorporating waste glass in concrete prepared with rice husk ash (RHA) as a partial substitute for cement, considering differences in the mechanical and thermal behavior of concrete based on the proportions of WG and CCA. A 5% replacement of cement by ashes of rice husk and waste glass was considered in this work. Concrete samples were prepared with several RHA:WG ratios namely 1:0, 1:1, 1:2, and 1:3 (RHA +<!--> <!-->WG =<!--> <!-->5%). For these concrete samples, the mechanical, thermal, and environmental properties were evaluated, the latter measured in CO<sub>2</sub> emissions. Results showed that workability (<em>i.e.</em> slump) and density increased as long as WG content increased. The value of compressive strength of 1:3 mixture was 14% higher than the 1:0 concrete mixture. Moreover, the thermal conductivity was increased by 380% and CO<sub>2</sub> emissions were dropped by 5.5%, in comparison to 1:0 concrete mixture. The incorporation of WG improves mechanical and thermal properties and reduces the environmental impact of rice husk ash concrete.</p></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"63 1","pages":"Pages 85-95"},"PeriodicalIF":3.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0366317523000316/pdfft?md5=3fd9160d38a058920589e8da733921af&pid=1-s2.0-S0366317523000316-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135363822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating correlations between translucency and wear resistance in lithium silicate-based dental glass-ceramics 硅酸锂基牙科材料透光性与耐磨性的相关性研究
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2023.02.004
Fernando Rodríguez-Rojas, Óscar Borrero-López, Estíbaliz Sánchez-González, José D. Ríos, Fernando Guiberteau

Lithium silicate-based glass-ceramics are widely employed dental materials, showing superior aesthetics (determined by translucency) but poorer wear resistance under severe contact conditions than alternative, artificial crown materials. This work investigates possible correlations between the level of translucency and resistance to wear (in vitro) under sliding contact against hard zirconia antagonists in commercial lithium disilicate and zirconia-reinforced lithium silicate dental glass-ceramics. Wear rates are quantified, and mechanisms responsible for material removal are analyzed. Results are discussed in terms of the materials’ microstructure and mechanical properties within the framework of a fracture mechanics model. Finally, implications for materials selection in dentistry are briefly discussed.

硅酸锂基玻璃陶瓷是一种广泛使用的牙科材料,与其他人工牙冠材料相比,硅酸锂基玻璃陶瓷显示出卓越的美感(由半透明度决定),但在严重接触条件下的耐磨性较差。这项研究调查了商用二硅酸锂和氧化锆增强型硅酸锂牙科玻璃陶瓷在与硬氧化锆拮抗剂滑动接触时的半透明程度和耐磨性(体外)之间可能存在的相关性。对磨损率进行了量化,并分析了材料去除的机制。在断裂力学模型的框架内,根据材料的微观结构和机械性能对结果进行了讨论。最后,简要讨论了牙科材料选择的意义。
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引用次数: 0
Glass–crystalline materials with high iron oxide concentration: Phase composition, redox ratio and magnetic properties 高浓度氧化铁的玻璃晶体材料:相组成、氧化还原比率和磁性能
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2023.04.001
Ruzha Harizanova , Irena Mihailova , Zara Cherkezova-Zheleva , Daniela Paneva , Milena Georgieva , Dimitar Tzankov , Georgi Avdeev , Christian Rüssel

The synthesis of glass–crystalline materials in the system Na2O/CaO/SiO2/Fe2O3 with high concentrations of Fe2O3 (20, 25 and 30 mol%) by applying the melt-quenching technique is reported. The melts spontaneously crystallize during pouring and the formation of magnetite (Fe3O4), hematite (α-Fe2O3) and ɛ-Fe2O3, as identified by X-ray diffraction (XRD) is observed. The microstructure and the elemental composition of the prepared materials are further investigated by scanning electron microscopy (SEM) and two different morphological types of Fe-containing crystals – needle-like and dendrite-shaped are detected. Mössbauer spectroscopy showed the presence of Fe3+ and Fe2+, as well as the existence of iron ions both in tetrahedral and octahedral coordination and the precipitation of hematite, ɛ-Fe2O3 and magnetite. The magnetic measurements on the prepared samples reveal ferrimagnetic properties with well defined hysteresis curves, although due to relatively small volume fraction of the iron-rich crystalline phases, the net magnetic moment is quite low compared to the bulk values for magnetite.

报告采用熔体淬火技术在高浓度 Fe2O3(20、25 和 30 mol%)的 Na2O/CaO/SiO2/Fe2O3 体系中合成了玻璃晶体材料。经 X 射线衍射 (XRD) 鉴定,观察到熔体在浇注过程中自发结晶,并形成磁铁矿(Fe3O4)、赤铁矿(α-Fe2O3)和ɛ-Fe2O3。扫描电子显微镜(SEM)进一步研究了制备材料的微观结构和元素组成,发现了两种不同形态的含铁晶体--针状和树枝状。摩斯鲍尔光谱显示存在 Fe3+ 和 Fe2+,以及四面体和八面体配位的铁离子,并析出赤铁矿、ɛ-Fe2O3 和磁铁矿。对制备的样品进行的磁性测量显示了具有明确磁滞曲线的铁磁特性,尽管由于富铁结晶相的体积分数相对较小,净磁矩与磁铁矿的体积值相比相当低。
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引用次数: 0
Characteristics of ceramic-like coatings obtained by plasma electrolyte oxidation on different Ti alloys 不同钛合金表面等离子体电解质氧化制备类陶瓷涂层的特性
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2023.04.002
Mariana Correa Rossi , Rafael Formenton dos Santos , Pedro Akira Bazaglia Kuroda , Conrado Ramos Moreira Afonso

Plasma electrolyte oxidation was used to modify the surface of different Ti alloys: c.p. Ti (α hcp structure), Ti–15Nb (α′ + β structure) and Ti–33Nb–33Zr (stable β cubic structure) and the influence of elements and microstructure in the TiO2-based ceramic layer formed as well as the surface properties was analyzed. The XRD patterns confirmed the presence of TiO2 (anatase and rutile) in the c.p. Ti. For Ti–15Nb (wt.%) indicated the presence the same oxides also of pentoxide niobium (Nb2O5). For Ti–33Nb–33Zr (wt.%) indicated just the presence of rutile as the stable oxide one at room temperature and dioxide zirconium (ZrO2). In addition, the formation of calcium carbonate CaCO3 and calcium phosphate Ca3(PO4)2 was detected in all 3 materials. The ceramic-like layer was more homogeneous for c.p. Ti and Ti–15Nb and more irregular hole like-pores for Ti–33Nb–33Zr. Bioactive ions used were detected in all alloys and the roughness for Ti–15Nb was higher compared to c.p. Ti. and Ti–33Nb–33Zr. The contact angle for the three samples was higher than 100°.

采用等离子电解质氧化法改性了不同钛合金的表面:c.p. Ti(α hcp 结构)、Ti-15Nb(α′ + β 结构)和 Ti-33Nb-33Zr (稳定的 β 立方结构),并分析了形成的基于 TiO2 的陶瓷层中的元素和微观结构以及表面特性的影响。X 射线衍射图证实了在 c.p. Ti 中存在 TiO2(锐钛型和金红石型)。对于 Ti-15Nb(重量百分比),表明存在相同的氧化物和五氧化二铌(Nb2O5)。对于 Ti-33Nb-33Zr(重量百分比),只表明存在金红石(室温下稳定的氧化物)和二氧化锆(ZrO2)。此外,在这三种材料中都检测到了碳酸钙 CaCO3 和磷酸钙 Ca3(PO4)2。在 c.p. Ti 和 Ti-15Nb 中,陶瓷样层更均匀,而在 Ti-33Nb-33Zr 中,陶瓷样层更多的是不规则的孔洞。在所有合金中都检测到了所使用的生物活性离子,与 c.p. Ti 和 Ti-33Nb-33Zr 相比,Ti-15Nb 的粗糙度更高。三种样品的接触角均大于 100°。
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引用次数: 0
Enhancing bone tissue regeneration with rGO-coated Si-Ca-P bioceramic scaffold 氧化石墨烯包被硅钙磷生物陶瓷支架促进骨组织再生
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2024-01-01 DOI: 10.1016/j.bsecv.2023.05.002
Patricia Mazón , Jeevithan Elango , José Eduardo Maté-Sánchez de Val , Piedad N. De Aza

Ceramic-based bone graft substitutes have been extensively studied for bone tissue engineering, due to their biocompatibility and osteoconductivity. Additionally, several studies have shown how graphene and its derivatives, due to their unique properties, can strongly promote cell adhesion, by enhance cellular adherence, proliferation, and osteoblast differentiation, and how graphene-based materials can promote spontaneous osteoblastic differentiation. The aim of this study was the use of a calcium silicophosphate ceramic, previously prepared in our laboratory, that presents excellent in vitro bioactivity, optimizing its operation by rGO coating. After coating with rGO any significant differences were observed in diffraction peaks from starting calcium silicophosphate ceramic, and SEM analysis showed a rough and undulating surface that favored a high specific surface area for promoting cell adhesion, proliferation and differentiation of cells. It could be confirmed by in vitro cell cultured with ahMSCs, showing adhesion and growing for cells with interconnected filaments extending over the surface, covering it after 7 days.

陶瓷基骨移植替代物因其生物相容性和骨传导性,已被广泛研究用于骨组织工程。此外,一些研究还表明,石墨烯及其衍生物因其独特的性质,可以通过增强细胞粘附、增殖和成骨细胞分化,以及石墨烯基材料如何促进成骨细胞自发分化,从而强烈促进细胞粘附。本研究的目的是使用我们实验室之前制备的硅磷酸钙陶瓷,这种陶瓷具有极佳的体外生物活性,通过涂覆 rGO 可以优化其操作。涂覆 rGO 后,与最初的硅磷酸钙陶瓷相比,衍射峰出现了明显差异,扫描电镜分析表明,陶瓷表面粗糙起伏,具有较高的比表面积,有利于促进细胞粘附、增殖和分化。这一点可通过体外培养 ahMSCs 得到证实,培养 7 天后,细胞粘附并生长,表面延伸出相互连接的细丝,并覆盖在表面。
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引用次数: 0
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