| 醇类保护剂对猪软骨低温膨胀过程的DSC研究 |
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| 引用本文： | 余华星,李代禧,胥义,周国燕,刘立,翟振,张燕.醇类保护剂对猪软骨低温膨胀过程的DSC研究[J].制冷学报,2015(3):97-101. |
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| 作者姓名： | 余华星 李代禧 胥义 周国燕 刘立 翟振 张燕 |
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| 作者单位： | 上海理工大学医疗器械与食品学院;上海理工大学医疗器械与食品学院;上海理工大学医疗器械与食品学院;上海理工大学医疗器械与食品学院;上海理工大学医疗器械与食品学院;上海理工大学医疗器械与食品学院;上海理工大学医疗器械与食品学院 |
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| 基金项目： | 国家自然基金(50906056)资助项目。 |
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| 摘 要： | 在对关节软骨进行低温保存时,由于冰晶的生长而造成的热膨胀效应是其低温断裂的主要原因。本论文采用非等温热分析仪和修正的Avrami动力学方程,考察了分别添加不同浓度的四种醇类低温保护剂时,猪关节软骨低温保存过程中热力学及结晶动力学参数的变化。研究表明,软骨结晶峰随降温速率的增大而变宽,从而导致结晶越不完善;在-60~0℃温度范围,只有添加4.5 mol/L 1,2-丙二醇时,其Avrami指数为4.156,冰晶以均相三维球晶方式生长。且与其他保护剂相比,1,2-丙二醇保护效果最好。同时降温速率对结晶及热膨胀不同的影响结果也说明,低温损伤并不完全是由冰晶生长所决定,还与其胞外基质的缓冲作用有关。
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| 关 键 词： | 关节软骨 DSC热分析 低温保护剂 结晶动力学 |
Effects of Cryoprotectant on Thermal Expansion of Articular Cartilage during Freezing Process by DSC Method |
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| Yu Huaxing,Li Daixi,Xu Yi,Zhou Guoyan,Liu Li,Zhai Zhen and Zhang Yan.Effects of Cryoprotectant on Thermal Expansion of Articular Cartilage during Freezing Process by DSC Method[J].Journal of Refrigeration,2015(3):97-101. |
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| Authors: | Yu Huaxing Li Daixi Xu Yi Zhou Guoyan Liu Li Zhai Zhen and Zhang Yan |
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| Affiliation: | Institute of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology;Institute of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology;Institute of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology;Institute of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology;Institute of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology;Institute of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology;Institute of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology |
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| Abstract: | |
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| Keywords: | articular cartilage DSC thermo analysis cryoprotectant crystallization kinetics |
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