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Preparation of High Percentage α-Calcium SulfateHemihydrate via a Hydrothermal Method
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences. (Material in Medicine)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences. (Material in Medicine)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences. (Material in Medicine)
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2017 (English)In: Journal of Biomaterials and Nanobiotechnology, ISSN 2158-7027, E-ISSN 2158-7043, Vol. 8, 36-49 p.Article in journal (Refereed) Published
Abstract [en]

α-calciumα-calcium sulfate hemihydrate ( -HH) is known to be suitable for application as bone void filler. High percentage ofα( -HH) is known to be suitable for application as bone void filler. High percentage ofα α -HHbone void filler. High percentage ofα -HH is obviously needed for medical applica-tions, especially for implantation. Three commercially available calcium sulfate di-·2H2O) with different sizes and surface morphologies were usedhydrates (DH, CaSO4·2H2CaSO4·2H2O)α-HH via a hydrothermal method.as starting materials to synthesize high percentageα-HHThe median particle sizes of the three types of DH were 946.7 µm, 162.4 µm and 62.4µm, respectively. They were named as DH-L, DH-M and DH-S in this paper. Theparticle size distribution, morphology and phase composition of the raw materialswere evaluated before synthesis. SEM results revealed that DH-L consisted of irregu-lar large particles, while DH-M and DH-S were composed of plate-like particles withsome small ones. High percentage HH can be obtained with proper synthesis para-meters by hydrothermal method, specifically, 105˚C/90 min for DH-L (achieving98.8% HH), 105˚C/30 min for DH-M (achieving 96.7% HH) and 100˚C/45 min forDH-S (achieving 98.4% HH). All the synthesized HH were hexagonal columns, de-α -phase HH. The particle size and morphology of start-α -phasemonstrating that they wereing material (DH) have significant influences on not only the rate of phase transitionα -HH.α -HH. Calcium sulfate dihydrate cementsbut also the morphology of the synthesizedα -HH. The highest compressive strength of cal-α -HH.were prepared by the synthesizedcium sulfate dihydrate cement was 17.2 MPa. The results show that the preparationα -HHα -HH is feasible via a hydrothermal method and the process canof high percentagebe further scaled up to industrial scale production.

Place, publisher, year, edition, pages
2017. Vol. 8, 36-49 p.
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Medical Materials
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URN: urn:nbn:se:uu:diva-330144DOI: 10.4236/jbnb.2017.81003OAI: oai:DiVA.org:uu-330144DiVA: diva2:1144591
Available from: 2017-09-26 Created: 2017-09-26 Last updated: 2017-11-29

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