Effects of Hydroxyapatite Nanoparticles on Devitrification crystallization of Different kinds of Cryoprotectants
To study the effects of Hydroxyapatite (HA) nanoparticles on devitrification of different cryoprotectant solutions, the crystallization of Glycerol(60%,w/w) and PEG-600(50%,w/w) solutions with HA nanoparticles of different particle size(20nm、40nm、60nm）and concentrations（0.1%、0.5%）were observed under...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Refrigeration Magazines Agency Co., Ltd.
2013-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2013.04.018 |
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| Summary: | To study the effects of Hydroxyapatite (HA) nanoparticles on devitrification of different cryoprotectant solutions, the crystallization of Glycerol(60%,w/w) and PEG-600(50%,w/w) solutions with HA nanoparticles of different particle size(20nm、40nm、60nm）and concentrations（0.1%、0.5%）were observed under a cryomicroscope. Experimental results showed that the morphology of Glycerol and PEG-600 solutions is dendritic and spheric respectively, and both structures are not changed by adding nanoparticles. The ice fraction of Glycerol solution containing 0.5% HA with the particle size of 60nm is 1/7 of that of Glycerol solution without nanoparticles. The ice fraction of PEG-600 solution increased drastically between -64℃ and -52℃, and the ice fraction of PEG-600 solution containing 0.5% HA with the particle size of 40nm increased by 90%. Ice growth rate has two maximum normally, however, there is only one maximum in Glycerol solution containing 0.5% HA with the particle size of 40nm, PEG-600 solution with the particle size of 60nm, and PEG-600 solution without nanoparticles. |
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| ISSN: | 0253-4339 |