Fabrication and Characterization of HA/CNT Bioceramics

2006 ◽  
Vol 532-533 ◽  
pp. 201-204 ◽  
Author(s):  
Yan Hua Meng ◽  
Chak Yin Tang ◽  
Chi Pong Tsui
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Ceramic Matrix ◽  
Ceramic Composites ◽  
Biological Properties ◽  
Strengthening Effect ◽  
Hot Press ◽  
Press Method ◽  
Fabrication And Characterization

A new kind of Hydroxyapatite (HA) composites was fabricated using a hot-press method in which carbon nanotubes (CNTs) were introduced to the HA ceramic matrix to improve the mechanical properties of the resulting composites. The CNTs were treated using a mixture of nitric acid and sulfuric acid. A homogeneous dispersion of the CNTs in the HA matrix was achieved through dispersing them in the solution of surfactant. The bioactivity of the samples was tested. The microstructures of HA/CNT ceramic composites and the sample surfaces after immersion in SBF were characterized by SEM. The results showed that the introduction of the CNTs into HA ceramic matrix could produce positive strengthening effect without impairing the biological properties of the HA ceramic.

Fabrication and Characterization of Biocomposite Using Grewia Optiva Fibre (i.e. Bhimal) Reinforced Polyvinyl Alcohol (PVA)

2015 ◽  
Vol 1105 ◽  
pp. 51-55 ◽  
Author(s):  
K.M. Gupta ◽  
Kishor Kalauni
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Natural Fibre ◽  
Fabrication Method ◽  
View Point ◽  
Engineering Material ◽  
Fibre Composites ◽  
Grewia Optiva ◽  
Fabrication And Characterization

Bhimal fibres are quite a newer kind of bio-degradable fibres. They have never been heard before in literatures from the view point of their utility as engineering material. These fibres have been utilized for investigation of their properties. Characterization of this fibre is essential to determine its properties for further use as reinforcing fibre in polymeric, bio-degradable and other kinds of matrix. With this objective, the fabrication method and other mechanical properties of Bhimal-reinforced-PVA biocomposite have been discussed. The stress-strain curves and load-deflection characteristics are obtained. The tensile, compressive, flexure and impact strengths have been calculated. The results are shown in tables and graphs. The results obtained are compared with other existing natural fibre biocomposites. From the observations, it has been concluded that the tensile strength of Bhimal-reinforced-PVA biocomposite is higher than other natural fibre composites. Hence these can be used as reinforcement to produce much lighter weight biocomposites.

Fabrication and characterization of HfC/SiC nanomultilayered films with enhanced mechanical properties

Vacuum ◽  
2016 ◽  
Vol 128 ◽  
pp. 230-233 ◽  
Author(s):  
Wei Li ◽  
Jia Meng ◽  
Ping Liu ◽  
Haoming Du ◽  
Ke Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fabrication And Characterization

Fabrication and Characterization of Carbon Nanotubes/Fluorhydroxyapatite Composites

2018 ◽  
Vol 18 (6) ◽  
pp. 4040-4046 ◽  
Author(s):  
Li Shi ◽  
Yu Bai ◽  
Yu-Long Bai ◽  
Wen Ma ◽  
Juan Su
Keyword(s):  
Carbon Nanotubes ◽  
Fabrication And Characterization

scholarly journals Fabrication and Characterization of Wrapped Metal Yarns-based Fabric Temperature Sensors

Polymers ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1549
Author(s):  
Qian Yang ◽  
Xi Wang ◽  
Xin Ding ◽  
Qiao Li
Keyword(s):  
Mechanical Properties ◽  
Body Temperature ◽  
Heat Source ◽  
Human Body ◽  
Temperature Sensors ◽  
Temperature Sensitive ◽  
Maximum Strain ◽  
Human Body Temperature ◽  
Fabrication And Characterization

Textile temperature sensors are highly in demanded keep a real-time and accurate track of human body temperature for identification of healthy conditions or clinical diagnosis. Among various materials for textile temperature sensors, temperature-sensitive metal fibers have highest precision. However, those metal fibers are mechanically too weak, and break constantly during the weaving process. To enhance the mechanical strength of the metal fibers, this paper proposes to make wrapped metal fibers using wrapping technology, and characterize the effect of wrapped metal yarns on both mechanical properties and sensing behaviors. The wrapped yarns were woven into fabrics, forming the fabric temperature sensors. Results show that strength and maximum strain of the wrapped yarns are 2.69 and 1.82 times of pure Pt fibers. The response time of fabric temperature sensors using wrapped yarns was observed as 0.78 s and 1.1 s longer compared to that using Pt fibers when front and back sides contacted heat source, respectively. It is recommended that the wrapping method should be implemented for the protection of Pt fibers in fabric temperature sensors.

scholarly journals Polymethyl Methacrylate-Based Bone Cements Containing Carbon Nanotubes and Graphene Oxide: An Overview of Physical, Mechanical, and Biological Properties

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1469 ◽  
Author(s):  
Sanaz Soleymani Eil Bakhtiari ◽  
Hamid Reza Bakhsheshi-Rad ◽  
Saeed Karbasi ◽  
Mohamadreza Tavakoli ◽  
Mahmood Razzaghi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Polymethyl Methacrylate ◽  
Biological Properties ◽  
Bone Diseases ◽  
Bone Cements ◽  
Bone Fixation ◽  
Primary Bone ◽  
Carbon Based

Every year, millions of people in the world get bone diseases and need orthopedic surgery as one of the most important treatments. Owing to their superior properties, such as acceptable biocompatibility and providing great primary bone fixation with the implant, polymethyl methacrylate (PMMA)-based bone cements (BCs) are among the essential materials as fixation implants in different orthopedic and trauma surgeries. On the other hand, these BCs have some disadvantages, including Lack of bone formation and bioactivity, and low mechanical properties, which can lead to bone cement (BC) failure. Hence, plenty of studies have been concentrating on eliminating BC failures by using different kinds of ceramics and polymers for reinforcement and also by producing composite materials. This review article aims to evaluate mechanical properties, self-setting characteristics, biocompatibility, and bioactivity of the PMMA-based BCs composites containing carbon nanotubes (CNTs), graphene oxide (GO), and carbon-based compounds. In the present study, we compared the effects of CNTs and GO as reinforcement agents in the PMMA-based BCs. Upcoming study on the PMMA-based BCs should concentrate on trialing combinations of these carbon-based reinforcing agents as this might improve beneficial characteristics.

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