Bone-like apatite layer formation on hydroxyapatite prepared by spark plasma sintering (SPS)
Hydroxyapatite (HA) compacts with high density and superior mechanical properties were fabricated by spark plasma sintering (SPS) using spray-dried HA powders as feedstock. The formation of bone-like apatite layer on SPS consolidated HA compacts were investigated by soaking the HA compacts in simula...
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| Veröffentlicht in: | Biomaterials 2004-08, Vol.25 (18), p.4127-4134 |
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| creator | Gu, Y.W. Khor, K.A. Cheang, P. |
| description | Hydroxyapatite (HA) compacts with high density and superior mechanical properties were fabricated by spark plasma sintering (SPS) using spray-dried HA powders as feedstock. The formation of bone-like apatite layer on SPS consolidated HA compacts were investigated by soaking the HA compacts in simulated body fluid (SBF) for various periods (maximum of 28 days). The structural changes in HA post-SBF were analyzed with scanning electron microscopy, grazing incidence X-ray diffraction and X-ray photoelectron spectroscopy. It was found that a layer consisting microcrystalline carbonate-containing hydroxyapatite was formed on the surface of HA compacts after soaking for 24
h. The formation mechanism of apatite on the surface of HA compacts after soaking in SBF was attributed to the ion exchange between HA compacts and the SBF solution. The increase in ionic concentration of calcium and phosphorus as well as the increase in pH after SBF immersion resulted in an increase in ionic activity product of apatite in the solution, and provided a specific surface with a low interface energy that is conducive to the nucleation of apatite on the surface of HA compacts. |
| doi_str_mv | 10.1016/j.biomaterials.2003.11.030 |
| format | Article |
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h. The formation mechanism of apatite on the surface of HA compacts after soaking in SBF was attributed to the ion exchange between HA compacts and the SBF solution. The increase in ionic concentration of calcium and phosphorus as well as the increase in pH after SBF immersion resulted in an increase in ionic activity product of apatite in the solution, and provided a specific surface with a low interface energy that is conducive to the nucleation of apatite on the surface of HA compacts.</description><identifier>ISSN: 0142-9612</identifier><identifier>EISSN: 1878-5905</identifier><identifier>DOI: 10.1016/j.biomaterials.2003.11.030</identifier><identifier>PMID: 15046903</identifier><language>eng</language><publisher>Netherlands: Elsevier Ltd</publisher><subject>Apatites - chemistry ; Biocompatible Materials - chemical synthesis ; Biocompatible Materials - chemistry ; Body Fluids - chemistry ; Bone Substitutes - chemical synthesis ; Bone Substitutes - chemistry ; Calcium phosphate ; Chemical Precipitation ; Crystallization - methods ; Dissolution ; Durapatite - chemistry ; Gases - chemistry ; Hot Temperature ; Hydrogen-Ion Concentration ; Hydroxyapatite ; Materials Testing ; Molecular Conformation ; Precipitation ; Simulated body fluid ; Spark plasma sintering ; Surface Properties</subject><ispartof>Biomaterials, 2004-08, Vol.25 (18), p.4127-4134</ispartof><rights>2003 Elsevier Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c469t-e8dcd57493601bc4ef4a8ea97322d12ae665458f4b12e0e4a6de8ce02ac54dd3</citedby><cites>FETCH-LOGICAL-c469t-e8dcd57493601bc4ef4a8ea97322d12ae665458f4b12e0e4a6de8ce02ac54dd3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.biomaterials.2003.11.030$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3548,27922,27923,45993</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15046903$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Gu, Y.W.</creatorcontrib><creatorcontrib>Khor, K.A.</creatorcontrib><creatorcontrib>Cheang, P.</creatorcontrib><title>Bone-like apatite layer formation on hydroxyapatite prepared by spark plasma sintering (SPS)</title><title>Biomaterials</title><addtitle>Biomaterials</addtitle><description>Hydroxyapatite (HA) compacts with high density and superior mechanical properties were fabricated by spark plasma sintering (SPS) using spray-dried HA powders as feedstock. The formation of bone-like apatite layer on SPS consolidated HA compacts were investigated by soaking the HA compacts in simulated body fluid (SBF) for various periods (maximum of 28 days). The structural changes in HA post-SBF were analyzed with scanning electron microscopy, grazing incidence X-ray diffraction and X-ray photoelectron spectroscopy. It was found that a layer consisting microcrystalline carbonate-containing hydroxyapatite was formed on the surface of HA compacts after soaking for 24
h. The formation mechanism of apatite on the surface of HA compacts after soaking in SBF was attributed to the ion exchange between HA compacts and the SBF solution. The increase in ionic concentration of calcium and phosphorus as well as the increase in pH after SBF immersion resulted in an increase in ionic activity product of apatite in the solution, and provided a specific surface with a low interface energy that is conducive to the nucleation of apatite on the surface of HA compacts.</description><subject>Apatites - chemistry</subject><subject>Biocompatible Materials - chemical synthesis</subject><subject>Biocompatible Materials - chemistry</subject><subject>Body Fluids - chemistry</subject><subject>Bone Substitutes - chemical synthesis</subject><subject>Bone Substitutes - chemistry</subject><subject>Calcium phosphate</subject><subject>Chemical Precipitation</subject><subject>Crystallization - methods</subject><subject>Dissolution</subject><subject>Durapatite - chemistry</subject><subject>Gases - chemistry</subject><subject>Hot Temperature</subject><subject>Hydrogen-Ion Concentration</subject><subject>Hydroxyapatite</subject><subject>Materials Testing</subject><subject>Molecular Conformation</subject><subject>Precipitation</subject><subject>Simulated body fluid</subject><subject>Spark plasma sintering</subject><subject>Surface Properties</subject><issn>0142-9612</issn><issn>1878-5905</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkV9r1TAYh4Mo7jj9ChK8kHnRmjdN09Q7N_9MGChsl0JIk7eas7apSY_Yb78czhG92yCQBJ43vx95CHkFrAQG8u227HwYzYLRmyGVnLGqBChZxR6RDahGFXXL6sdkw0DwopXAT8izlLYs35ngT8kJ1EzIllUb8v08TFgM_hapmc3iF6SDWTHSPsQc4cNE8_q5uhj-rH-JOeJsIjrarTTl0y2dB5NGQ5Of9q2mH_Ts-tv1m-fkSZ8b4ovjfkpuPn28ubgsrr5-_nLx_qqwucVSoHLW1Y1oK8mgswJ7YRSatqk4d8ANSlmLWvWiA44MhZEOlUXGja2Fc9UpeX14do7h1w7TokefLA6DmTDskm6gaWpVNfeCXAGwtn0QyLgUcC8IjQLZwh58dwBtDClF7PUc_WjiqoHpvVW91f9b1XurGkBnq3n45TFl143o_o0eNWbgwwHA_Mu_PUadrMfJovMR7aJd8A_JuQPNHrrc</recordid><startdate>20040801</startdate><enddate>20040801</enddate><creator>Gu, Y.W.</creator><creator>Khor, K.A.</creator><creator>Cheang, P.</creator><general>Elsevier Ltd</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>7QQ</scope><scope>JG9</scope><scope>7SR</scope><scope>7TB</scope><scope>F28</scope><scope>7X8</scope></search><sort><creationdate>20040801</creationdate><title>Bone-like apatite layer formation on hydroxyapatite prepared by spark plasma sintering (SPS)</title><author>Gu, Y.W. ; Khor, K.A. ; Cheang, P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c469t-e8dcd57493601bc4ef4a8ea97322d12ae665458f4b12e0e4a6de8ce02ac54dd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Apatites - chemistry</topic><topic>Biocompatible Materials - chemical synthesis</topic><topic>Biocompatible Materials - chemistry</topic><topic>Body Fluids - chemistry</topic><topic>Bone Substitutes - chemical synthesis</topic><topic>Bone Substitutes - chemistry</topic><topic>Calcium phosphate</topic><topic>Chemical Precipitation</topic><topic>Crystallization - methods</topic><topic>Dissolution</topic><topic>Durapatite - chemistry</topic><topic>Gases - chemistry</topic><topic>Hot Temperature</topic><topic>Hydrogen-Ion Concentration</topic><topic>Hydroxyapatite</topic><topic>Materials Testing</topic><topic>Molecular Conformation</topic><topic>Precipitation</topic><topic>Simulated body fluid</topic><topic>Spark plasma sintering</topic><topic>Surface Properties</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gu, Y.W.</creatorcontrib><creatorcontrib>Khor, K.A.</creatorcontrib><creatorcontrib>Cheang, P.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Materials Research Database</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>MEDLINE - Academic</collection><jtitle>Biomaterials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gu, Y.W.</au><au>Khor, K.A.</au><au>Cheang, P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Bone-like apatite layer formation on hydroxyapatite prepared by spark plasma sintering (SPS)</atitle><jtitle>Biomaterials</jtitle><addtitle>Biomaterials</addtitle><date>2004-08-01</date><risdate>2004</risdate><volume>25</volume><issue>18</issue><spage>4127</spage><epage>4134</epage><pages>4127-4134</pages><issn>0142-9612</issn><eissn>1878-5905</eissn><abstract>Hydroxyapatite (HA) compacts with high density and superior mechanical properties were fabricated by spark plasma sintering (SPS) using spray-dried HA powders as feedstock. The formation of bone-like apatite layer on SPS consolidated HA compacts were investigated by soaking the HA compacts in simulated body fluid (SBF) for various periods (maximum of 28 days). The structural changes in HA post-SBF were analyzed with scanning electron microscopy, grazing incidence X-ray diffraction and X-ray photoelectron spectroscopy. It was found that a layer consisting microcrystalline carbonate-containing hydroxyapatite was formed on the surface of HA compacts after soaking for 24
h. The formation mechanism of apatite on the surface of HA compacts after soaking in SBF was attributed to the ion exchange between HA compacts and the SBF solution. The increase in ionic concentration of calcium and phosphorus as well as the increase in pH after SBF immersion resulted in an increase in ionic activity product of apatite in the solution, and provided a specific surface with a low interface energy that is conducive to the nucleation of apatite on the surface of HA compacts.</abstract><cop>Netherlands</cop><pub>Elsevier Ltd</pub><pmid>15046903</pmid><doi>10.1016/j.biomaterials.2003.11.030</doi><tpages>8</tpages></addata></record> |
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| source | MEDLINE; ScienceDirect Journals (5 years ago - present) |
| subjects | Apatites - chemistry Biocompatible Materials - chemical synthesis Biocompatible Materials - chemistry Body Fluids - chemistry Bone Substitutes - chemical synthesis Bone Substitutes - chemistry Calcium phosphate Chemical Precipitation Crystallization - methods Dissolution Durapatite - chemistry Gases - chemistry Hot Temperature Hydrogen-Ion Concentration Hydroxyapatite Materials Testing Molecular Conformation Precipitation Simulated body fluid Spark plasma sintering Surface Properties |
| title | Bone-like apatite layer formation on hydroxyapatite prepared by spark plasma sintering (SPS) |
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