Effect of phosphoric acid on the properties of magnesium oxychloride cement as a biomaterial
Magnesium oxychloride cement (MOC) has been used in civil engineering for more than 100years, but its application has been limited by its poor water resistance. This property, however, could be exploited in the formulation of a resorbable orthopaedic biomaterial. In this study, H3PO4 was added to co...
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| Veröffentlicht in: | Cement and concrete research 2014-02, Vol.56, p.69-74 |
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| creator | Tan, Yanni Liu, Yong Grover, Liam |
| description | Magnesium oxychloride cement (MOC) has been used in civil engineering for more than 100years, but its application has been limited by its poor water resistance. This property, however, could be exploited in the formulation of a resorbable orthopaedic biomaterial. In this study, H3PO4 was added to control the degradation process of MOC to provide a predictable and clinically appropriate resorption time. The effects of H3PO4 on the phases, microstructures, mechanical properties, hydration and degradation of MOC have been evaluated. The results revealed that the crystalline phases in MOC before and after adding H3PO4 were the same, but that the needle-like phase 5 (5Mg(OH)2·MgCl2·8H2O) crystals were formed more extensively in MOC with H3PO4 than that in MOC without H3PO4. Furthermore, the addition of H3PO4 was shown to retard the hydration process. H3PO4 did significantly improve the water resistance of MOC though its addition resulting in a reduction in compressive strength. |
| doi_str_mv | 10.1016/j.cemconres.2013.11.001 |
| format | Article |
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This property, however, could be exploited in the formulation of a resorbable orthopaedic biomaterial. In this study, H3PO4 was added to control the degradation process of MOC to provide a predictable and clinically appropriate resorption time. The effects of H3PO4 on the phases, microstructures, mechanical properties, hydration and degradation of MOC have been evaluated. The results revealed that the crystalline phases in MOC before and after adding H3PO4 were the same, but that the needle-like phase 5 (5Mg(OH)2·MgCl2·8H2O) crystals were formed more extensively in MOC with H3PO4 than that in MOC without H3PO4. Furthermore, the addition of H3PO4 was shown to retard the hydration process. H3PO4 did significantly improve the water resistance of MOC though its addition resulting in a reduction in compressive strength.</description><identifier>ISSN: 0008-8846</identifier><identifier>EISSN: 1873-3948</identifier><identifier>DOI: 10.1016/j.cemconres.2013.11.001</identifier><identifier>CODEN: CCNRAI</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; Biomaterials ; Biomedical materials ; Buildings. 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This property, however, could be exploited in the formulation of a resorbable orthopaedic biomaterial. In this study, H3PO4 was added to control the degradation process of MOC to provide a predictable and clinically appropriate resorption time. The effects of H3PO4 on the phases, microstructures, mechanical properties, hydration and degradation of MOC have been evaluated. The results revealed that the crystalline phases in MOC before and after adding H3PO4 were the same, but that the needle-like phase 5 (5Mg(OH)2·MgCl2·8H2O) crystals were formed more extensively in MOC with H3PO4 than that in MOC without H3PO4. Furthermore, the addition of H3PO4 was shown to retard the hydration process. H3PO4 did significantly improve the water resistance of MOC though its addition resulting in a reduction in compressive strength.</description><subject>Applied sciences</subject><subject>Biomaterials</subject><subject>Biomedical materials</subject><subject>Buildings. 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Public works</topic><topic>Cement concrete constituents</topic><topic>Cements</topic><topic>Compressive strength (C)</topic><topic>Degradation</topic><topic>Degradation (C)</topic><topic>Exact sciences and technology</topic><topic>Hydration</topic><topic>Hydration (A)</topic><topic>Magnesium</topic><topic>Materials</topic><topic>MgO (D)</topic><topic>Microstructure (B)</topic><topic>Phases</topic><topic>Properties and test methods</topic><topic>Properties of anhydrous and hydrated cement, test methods</topic><topic>Surgical implants</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tan, Yanni</creatorcontrib><creatorcontrib>Liu, Yong</creatorcontrib><creatorcontrib>Grover, Liam</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Cement and concrete research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tan, Yanni</au><au>Liu, Yong</au><au>Grover, Liam</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of phosphoric acid on the properties of magnesium oxychloride cement as a biomaterial</atitle><jtitle>Cement and concrete research</jtitle><date>2014-02-01</date><risdate>2014</risdate><volume>56</volume><spage>69</spage><epage>74</epage><pages>69-74</pages><issn>0008-8846</issn><eissn>1873-3948</eissn><coden>CCNRAI</coden><abstract>Magnesium oxychloride cement (MOC) has been used in civil engineering for more than 100years, but its application has been limited by its poor water resistance. This property, however, could be exploited in the formulation of a resorbable orthopaedic biomaterial. In this study, H3PO4 was added to control the degradation process of MOC to provide a predictable and clinically appropriate resorption time. The effects of H3PO4 on the phases, microstructures, mechanical properties, hydration and degradation of MOC have been evaluated. The results revealed that the crystalline phases in MOC before and after adding H3PO4 were the same, but that the needle-like phase 5 (5Mg(OH)2·MgCl2·8H2O) crystals were formed more extensively in MOC with H3PO4 than that in MOC without H3PO4. Furthermore, the addition of H3PO4 was shown to retard the hydration process. H3PO4 did significantly improve the water resistance of MOC though its addition resulting in a reduction in compressive strength.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.cemconres.2013.11.001</doi><tpages>6</tpages></addata></record> |
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| ispartof | Cement and concrete research, 2014-02, Vol.56, p.69-74 |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Applied sciences Biomaterials Biomedical materials Buildings. Public works Cement concrete constituents Cements Compressive strength (C) Degradation Degradation (C) Exact sciences and technology Hydration Hydration (A) Magnesium Materials MgO (D) Microstructure (B) Phases Properties and test methods Properties of anhydrous and hydrated cement, test methods Surgical implants |
| title | Effect of phosphoric acid on the properties of magnesium oxychloride cement as a biomaterial |
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