Characterisation of mechanical and surface properties of novel biomimetic interpenetrating alumina-polycarbonate composite materials

Al-Jawoosh, Sara; Ireland, Anthony J; Su, Bo

doi:10.1016/j.dental.2020.09.016

Cited by 10 publications

(6 citation statements)

References 84 publications

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“…Other researchers have previously observed a similar relationship in alumina ceramic sintering [ 24 ]. In comparison, Al-Jawoosh et al indicated that the R a roughness parameter for the densely sintered alumina ceramic specimens was 0.6 µm [ 25 ]. As a consequence of the use of high pressure, the pores and cracks closing occurred and the material’s compaction increased.…”

Section: Resultsmentioning

confidence: 99%

Influence of Fabrication Method and Surface Modification of Alumina Ceramic on the Microstructure and Mechanical Properties of Ceramic–Elastomer Interpenetrating Phase Composites (IPCs)

et al. 2022

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The paper presents experimental results of the work conducted to improve the adhesion between alumina ceramics and urea-urethane elastomer in the interpenetrating phase composites (IPCs), in which these two phases are interpenetrating three-dimensionally and topologically throughout the microstructure. Measurements of the contact angle, surface roughness, and shear tests were used to evaluate the effectivity and select the quantity of a silane coupling agent and the ceramic fabrication method. The tests were conducted using samples of dense alumina ceramic obtained by three- or four-step methods. In the four-step process, hot isostatic pressing (HIP) was applied additionally. As a result of the coupling agent coat and HIP application, the ceramic substrate wettability by the elastomer was improved. The water contact angle was reduced from 80 to 60%. In the next step, porous ceramic preforms were fabricated using HIP sintering and a solution of silane coupling agent treated their surface. The composites were produced using vacuum-pressure infiltration of porous alumina ceramics by urea-urethane elastomer in liquid form. The influence of the coupling agent application on the microstructure and mechanical properties of the composites was estimated. The microstructure of the composites was identified using SEM microscopy and X-ray tomography. As a result of using the coupling agent, residual porosity decreased from 7 to 2%, and compressive strength, as well as stress at a plateau, increased by more than 20%, from 25 to 33 MPa and from 15 to 24 MPa, respectively, for the composites fabricated by infiltration ceramic preforms with 40% of porosity.

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Section: Resultsmentioning

confidence: 99%

Influence of Fabrication Method and Surface Modification of Alumina Ceramic on the Microstructure and Mechanical Properties of Ceramic–Elastomer Interpenetrating Phase Composites (IPCs)

et al. 2022

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“…In the process of fracture, the crack needs to pass through the interlayer interface and the interlayer phase. Therefore, the mechanical strength of laminated ceramics is determined by the bonding strength of the interlayer interface and the strength of the interlayer phase 20,93,95,202 . Among them, the bonding strength of interlayer interface is affected by the combination, arrangement, and number of layers of interlayer and base layer 89,203 .…”

Section: Performance Evaluation and Applicationmentioning

confidence: 99%

“…Therefore, the mechanical strength of laminated ceramics is determined by the bonding strength of the interlayer interface and the strength of the interlayer phase. 20,93,95,202 Among them, the bonding strength of interlayer interface is affected by the combination, arrangement, and number of layers of interlayer and base layer. 89,203 The strength of interlaminar phase is directly related to its composition, content, and sintering process.…”

Section: Mechanical Properties Of Bionic Toughened Ceramicsmentioning

confidence: 99%

Research and application of biomimetic modified ceramics and ceramic composites: A review

Li,

Guo,

Huang

et al. 2023

J Am Ceram Soc.

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Ceramic materials are widely used in engineering field because of their good physical and chemical properties. The poor mechanical properties of traditional ceramics seriously limit the development of ceramic materials and have attracted extensive attention since its birth. The development of high toughness, light weight, and functional ceramic materials has long been the pursuit of materials scientists. Since ancient times, nature has been the source of all kinds of human technological ideas, engineering principles, and major inventions. The functional structure of biology provides a good research object for the bionic design and preparation of ceramic materials. Therefore, it is necessary to summarize the functional structures and mechanisms in nature and biomimetic preparation technology. The purpose of this review is to provide guidance for the functionalized biomimetic design and efficient preparation of ceramic materials. Some typical functional examples in nature are introduced in detail, and several representative biomimetic preparation methods are listed. Finally, the performance and application status of biomimetic ceramics are summarized, and the future development direction of biomimetic ceramic materials is prospected.

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“…In extant studies, researchers have also experimented with different particles, aiming to identify those that would strengthen dental composite materials most effectively by modifying their mechanical properties [ 12 ]. For example, silicon nanoparticles in different weight ratios [ 2 ] or particles of aluminum trioxide [ 13 ], alumina-polycarbonate [ 14 ], and amorphous calcium phosphate [ 15 ] have been previously incorporated into the basic bisphenol A-glycidyl methacrylate (Bis-GMA) organic resin matrix. Based on their analyses, Kumarand co-workers concluded that adding gypsum particles to dental composites exerts a positive influence on its physicomechanical properties and optical characteristics, as well as on the degree of monomer-to-polymer conversion [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Development of Light-Polymerized Dental Composite Resin Reinforced with Electrospun Polyamide Layers

Maletin,

Ristić,

Nešić

et al. 2023

Polymers

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As the mechanical properties of resin-based dental composite materials are highly relevant in clinical practice, diverse strategies for their potential enhancement have been proposed in the extant literature, aiming to facilitate their reliable use in dental medicine. In this context, the focus is primarily given to the mechanical properties with the greatest influence on clinical success, i.e., the longevity of the filling in the patient’s mouth and its ability to withstand very strong masticatory forces. Guided by these objectives, the goal of the present study was to ascertain whether the reinforcement of dental composite resins with electrospun polyamide (PA) nanofibers would improve the mechanical strength of dental restoration materials. For this purpose, light-cure dental composite resins were interspersed with one and two layers comprising PA nanofibers in order to investigate the influence of such reinforcement on the mechanical properties of the resulting hybrid resins. One set of the obtained samples was investigated as prepared, while another set was immersed in artificial saliva for 14 days and was subsequently subjected to the same set of analyses, namely Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and differential scanning calorimetry (DSC). Findings yielded by the FTIR analysis confirmed the structure of the produced dental composite resin material. They also provided evidence that, while the presence of PA nanofibers did not influence the curing process, it strengthened the dental composite resin. Moreover, flexural strength measurements revealed that the inclusion of a 16 μm-thick PA nanolayer enabled the dental composite resin to withstand a load of 3.2 MPa. These findings were supported by the SEM results, which further indicated that immersing the resin in saline solution resulted in a more compact composite material structure. Finally, DSC results indicated that as-prepared as well as saline-treated reinforced samples had a lower glass transition temperature (Tg) compared to pure resin. Specifically, while pure resin had a Tg of 61.6 °C, each additional PA nanolayer decreased the Tg by about 2 °C, while the further reduction was obtained when samples were immersed in saline for 14 days. These results show that electrospinning is a facile method for producing different nanofibers that can be incorporated into resin-based dental composite materials to modify their mechanical properties. Moreover, while their inclusion strengthens the resin-based dental composite materials, it does not affect the course and outcome of the polymerization reaction, which is an important factor for their use in clinical practice.

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Characterisation of mechanical and surface properties of novel biomimetic interpenetrating alumina-polycarbonate composite materials

Cited by 10 publications

References 84 publications

Influence of Fabrication Method and Surface Modification of Alumina Ceramic on the Microstructure and Mechanical Properties of Ceramic–Elastomer Interpenetrating Phase Composites (IPCs)

Influence of Fabrication Method and Surface Modification of Alumina Ceramic on the Microstructure and Mechanical Properties of Ceramic–Elastomer Interpenetrating Phase Composites (IPCs)

Research and application of biomimetic modified ceramics and ceramic composites: A review

Development of Light-Polymerized Dental Composite Resin Reinforced with Electrospun Polyamide Layers

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