Download or read book Synthesis and Characterization of Porous Hydroxyapatite and Hydroxyapatite Coatings written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A technique is developed to construct bulk hydroxyapatite (HAp) with different cellular structures. The technique involves the initial synthesis of nanocrystalline hydroxyapatite powder from an aqueous solution using water-soluble compounds and then followed by spray drying into agglomerated granules. The granules were further cold pressed and sintered into bulks at elevated temperatures. The sintering behavior of the HAp granules was characterized and compared with those previously reported. Resulting from the fact that the starting HAp powders were extremely fine, a relatively low activation energy for sintering was obtained. In the present study, both porous and dense structures were produced by varying powder morphology and sintering parameters. Porous structures consisting of open cells were constructed. Sintered structures were characterized using scanning electron microscopy and x-ray tomography. In the present paper, hydroxyapatite coatings produced by magnetron sputtering on silicon and titanium substrates will also be presented. The mechanical properties of the coatings were measured using nanoindentation techniques and microstructures examined using transmission electron microscopy.
Download or read book Synthesis and Characterization of Porous Magnesium and Strontium doped Hydroxyapatite Coating on Titanium Discs by Geomimetic Thermal Spray written by 劉育誠 and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Porous Hydroxyapatite Ceramics for Batch and Column Treatment of Fluoride impacted Ground Water written by Anisha Nijhawan and published by . This book was released on 2019 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroxyapatite written by Yoshiki Oshida and published by Momentum Press. This book was released on 2014-12-01 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evidence-based literature reviews can provide foundation skills in research-oriented bibliographic inquiry, with an emphasis on such review and synthesis of applicable literature. Information is gathered by surveying a broad array of multidisciplinary research publications written by scholars and researchers. This book is based on a review of about 2,000 carefully selected articles about hydroxyapatite (HA) materials from about 150 peer-review journals in both engineering and medical areas and presents itself as a typical example of evidence-based learning (EBL). HA is very unique material which has been employed equally in both engineering and medical and dental fields. In addition, the name “apatite” comes from the Greek word απατw, which means to deceive. What is actually happening inside the apatite crystal structure is based on the unique characteristics of ion exchangeability. Because of this, versatility of HA has been recognized in wide ranges, including bone-grafting substitutes, various ways to fabricate HAs, HA-based coating materials, HA-based biocomposites, scaffold materials, and drug-delivery systems. This book covers all these interesting areas involved in HA materials science and technology.
Download or read book Microplasma Sprayed Hydroxyapatite Coatings written by Arjun Dey and published by CRC Press. This book was released on 2015-03-19 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been enormous growth in the use of medical implants. However, in the case of hip replacement, loosening of metallic prosthesis fixed with polymethylmethylacrylate bone cement has resulted in painstaking revision surgery, which is a major problem for the patient, surgeon, and biomedical technology itself. In fact, global recognition of thi
Download or read book Synthesis and Characterization of Hydroxyapatite Coatings for Medical Applications written by Cong Fu and published by . This book was released on 2016 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Hydroxyapatite (HA, Ca10(PO4)6(OH)2) is the major mineral component of tooth and bone. Due to high biocompatibility and bioactivity, it has been widely used as coatings and additives in bone/dental implants. This thesis investigated preparing hydroxyapatite coatings on metal substrates through an electrochemical synthesis method. The coating was observed to carry negative surface charge. The giant electric polarization is enhanced along the c-axis of the oriented crystal domains, and is a result of a field-induced composition gradient developed during the synthesis. The polarized hydroxyapatite coatings were developed as medical implants. Chemical, mechanical and electrical properties were studied to improve biological response. In-vitro tests demonstrated polarized hydroxyapatite could promote mineralization, cell adhesion, and cell proliferation. To prevent possible post-surgery infections, hydroxyapatite coating was further investigated as a drug delivery vehicle. Electrical properties were significantly improved by preparing a fully dense B-type carbonated hydroxyapatite coating with caxis crystal orientation. Drug loading and release were well controlled by adjusting the coating's surface charge. Besides, a novel electrochemical approach was developed to prepare hydroxyapatite composite coatings with ionic species. Cationic and anionic molecules demonstrate distinct loading and release behaviors. The release from the composite coatings is governed by a combination of diffusion through the coating and ion exchange. Finally, a two-stage electrochemical method was designed to prepare hydroxyapatite coatings that are simultaneously bioactive and antimicrobial. Metallic silver nanoparticles can be formed through electrochemical reduction on the HA coating surface. The amount of silver nanoparticles is directly proportional to the time used for electrochemical reduction under constant current density. Mineralization tests show that the bioactivity of hydroxyapatite was not affected by silver deposition. This study provides an alternative to improve the antibacterial ability of hydroxyapatite coating without using antibiotics"--Pages vii-viii.
Download or read book Handbook of Ionic Substituted Hydroxyapatites written by Abdul Samad Khan and published by Woodhead Publishing. This book was released on 2019-11-16 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Ionic Substituted Hydroxyapatites provides scientists and researchers with comprehensive information on the synthesis processes of hydroxyapatite, also explaining the application of substituted hydroxyapatite. The book's content is very structured and explanatory, starting with a detailed overview of biological apatite in bones and teeth, as well as a presentation of the analytical tools for hydroxyapatite. Bioceramics and the relative modern and emerging processing techniques are covered, as is 3-D printing, which has gained increasing importance within biomedical materials and in the use of hydroxyapatite in tissue engineering. Finally, the advantages and disadvantages of using ionic substitutions in clinical application are presented. Students and researchers in disciplines, such as Material Science, Ceramics, and Bioengineering will find this book to be very helpful in their work. It will also be a valuable resource for practitioners and surgeons in orthopedics, perio/implantology and maxillo-facial disciplines, and professionals working in R&D in ceramics and pharmaceuticals. Provides responses to the lack of scientific information about hydroxyapatites for biomedical applications Solves researchers’ issues regarding phase changes with respect to substituted ions and how these substitutions can alter/improve the properties of stoichiometric hydroxyapatite Explains modern clinical applications and the effects of apatites within biomedical applications Includes both the advantages and disadvantages of using ionic substitutions in clinical application
Download or read book Design and Applications of Hydroxyapatite Based Catalysts written by Doan Pham Minh and published by John Wiley & Sons. This book was released on 2022-06-15 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential reference for researchers and experts in industry highlighting the rapidly growing field of hydroxyapatite-based catalysts and their application in various chemical processes. Hydroxyapatite (Ca10(PO4)6(OH)2) is the main mineral component of human and animal bones. It is largely applied in the field of biomaterials due to its biocompatibility. Recently, hydroxyapatite-based materials have especially gained a lot of attention by researchers in catalysis, as they are versatile and have shown precious properties of a good catalyst and catalyst support such as excellent ion-exchange capacity, high porosity, very low water solubility, controlled basicity/acidity, and good thermal stability at high temperatures. Design and Applications of Hydroxyapatite-Based Catalysts gives a detailed overview of the synthesis, characterization, and use of hydroxyapatite-based materials in catalysis. It covers synthetic hydroxyapatites (from pure chemicals or waste), natural apatites and materials from eggshells and animal bones. The application of hydroxyapatite-based catalysts in selective oxidation, deoxygenation, selective hydrogenation, dehydrogenation reactions, organic synthesis, as well as reforming processes and production of energy carriers is reviewed. Moreover, electrocatalysis and photocatalysis using hydroxyapatite-based materials are discussed. Kinetic and mechanism studies of various chemical pro-cesses over hydroxyapatite-based catalysts are also presented. This is the first book solely dedicated to hydroxyapatite-based materials and their use in catalysis. Covers synthesis and characterization, surface and structure studies, kinetic and mechanism aspects, and various applications in heterogeneous catalysis, electrocatalysis, and photocatalysis. Aimed at further stimulating research in the field Design and Applications of Hydroxyapatite-Based Catalysts is an indispensable source-of-information for researchers in academia and industry working in catalysis.
Download or read book Characterization of Porous Hydroxyapatite Components Fabricated by Starch Consolidation written by and published by . This book was released on 2008 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Synthesis Characterization and Cell Seeding of a Collagen hydroxyapatite Porous Composite for the Treatment of Osseous Defects written by Kim Rachel Patterson and published by . This book was released on 1997 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroxyapatite Coatings for Biomedical Applications written by Sam Zhang and published by CRC Press. This book was released on 2013-05-14 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydroxyapatite coatings are of great importance in the biological and biomedical coatings fields, especially in the current era of nanotechnology and bioapplications. With a bonelike structure that promotes osseointegration, hydroxyapatite coating can be applied to otherwise bioinactive implants to make their surface bioactive, thus achieving faster healing and recovery. In addition to applications in orthopedic and dental implants, this coating can also be used in drug delivery. Hydroxyapatite Coatings for Biomedical Applications explores developments in the processing and property characterization and applications of hydroxyapatite to provide timely information for active researchers and newcomers alike. In eight carefully reviewed chapters, hydroxyapatite experts from the United States, Japan, Singapore, and China present the latest on topics ranging from deposition processes to biomedical applications in implants and drug delivery. This book discusses: Magnetron sputtering and electrochemical deposition The modification of hydroxyapatite properties by sol–gel deposition to incorporate other elements found in natural bones, such as zinc, magnesium, and fluorine The use of pure hydroxyapatite in drug delivery applications The growth or self-assembly of hydroxyapatite on shape memory alloy Hydroxyapatite composite coatings—with carbon nanotubes, titanium dioxide (TiO2), and others—on the titanium alloy Offering valuable insights and a wealth of data, including numerous tables and figures, this is a rich source of information for research on hydroxyapatite coatings. Each chapter also covers material that provides an accessible stepping stone for those who are new to the field.
Download or read book Submicron Porous Materials written by Paolo Bettotti and published by Springer. This book was released on 2017-02-21 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the latest research on porous materials at the submicron scale and inspires readers to better understand the porosity of materials, as well as to develop innovative new materials. A comprehensive range of materials are covered, including carbon-based and organic-based porous materials, porous anodic alumina, silica, and titania-based sol-gel materials. The fabrication, characterization, and applications of these materials are all explored, with applications ranging from sensors, thermoelectrics, catalysis, energy storage, to photovoltaics. Also of practical use for readers are chapters that describe the basics of porous silicon fabrication and its use in optical sensing and drug delivery applications; how thermal transport is affected in porous materials; how to model diffusion in porous materials; and a unique chapter on an innovative spectroscopic technique used to characterize materials' porosity. This is an ideal book for graduate students, researchers, and professionals who work with porous materials.
Download or read book Bioceramics 14 written by Sharon Brown and published by Trans Tech Publications Ltd. This book was released on 2001-11-30 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioceramics has evolved into a major field of study having important implications for humankinds future health and wellbeing. Volume is indexed by Thomson Reuters CPCI-S (WoS). The Bioceramics-14 monograph contains more than 160 papers with representations from over 20 countries. The topics range from totally inert, load-bearing materials, such as alumina, zirconia, silicon nitride and diamond to bioreactive materials such as calcium phosphates and bioglasses. The latter have great potential for aiding grafting, bone repair, drug-delivery, and implant-fixation to living tissues.
Download or read book Hydroxyapatite written by Valeri S. Gshalaev and published by Nova Biomedical Books. This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydroxyapatite is the most widely accepted biomaterial for the repair and reconstruction of bone tissue defects. It has all the characteristic features of biomaterials, such as, biocompatible, bioactive, osteoconductive, non-toxic, non- inflammatory and non-immunogenic properties. In this book, the authors present current research in the study of the synthesis, properties and applications of hydroxyapatites. Topics discussed include nanodimensional and nanocrystalline hydroxyapatite and other calcium orthophosphates; application of biomimetic nanocrystalline apatites in drug delivery and tissue engineering; polymer matrix mediated synthesis of nano hydroxyapatite crystals; osteointegration of titanium porous implants with carbon nanocoating and hydroxyapatite particles into the pores; hydroxyapatite thin film prepared by sputtering technique for medical applications; and hydroxyapatite application in dentistry and maxillofacial surgery.
Download or read book Hydroxyapatite HAp for Biomedical Applications written by Michael Mucalo and published by Elsevier. This book was released on 2015-03-06 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydroxyapatite in the form of hydroxycarbonate apatite is the principal mineral component of bone tissue in mammals. In Bioceramics, it is classed as a bioactive material, which means bone tissue grows directly on it when placed in apposition without intervening fibrous tissue. Hydroxyapatite is hence commonly used as bone grafts, fillers and as coatings for metal implants. This important book provides an overview of the most recent research and developments involving hydroxyapatite as a key material in medicine and its application. Reviews the important properties of hydroxyapatite as a biomaterial Considers a range of specific forms of the material and their advantages Reviews a range of specific medical applications for this important material
Download or read book Hydroxyapatite and Related Materials written by Paul W. Brown and published by CRC Press. This book was released on 2017-12-14 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Audience Applied biomathematicians, orthopedists, clinical orthopedists.
Download or read book Handbook on Synthesis Strategies for Advanced Materials written by A. K. Tyagi and published by Springer Nature. This book was released on 2022-01-04 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents state-of-the-art coverage of synthesis of advanced functional materials. Unconventional synthetic routes play an important role in the synthesis of advanced materials as many new materials are metastable and cannot be synthesized by conventional methods. This book presents various synthesis methods such as conventional solid-state method, combustion method, a range of soft chemical methods, template synthesis, molecular precursor method, microwave synthesis, sono-chemical method and high-pressure synthesis. It provides a comprehensive overview of synthesis methods and covers a variety of materials, including ceramics, films, glass, carbon-based, and metallic materials. Many techniques for processing and surface functionalization are also discussed. Several engineering aspects of materials synthesis are also included. The contents of this book are useful for researchers and professionals working in the areas of materials and chemistry.
