纳米低温保护剂玻璃化过程中热学性质的DSC 研究.pdf

文档介绍：纳米低温保护剂玻璃化过程中热学性质的 DSC 研究

徐海峰郝保同刘连军唐临利刘宝林

(上海理工大学生物系统热科学研究所上海 200093)

摘要本文利用差示扫描量热仪(DSC)对含有羟基磷灰石(HA)纳米颗粒的丙三醇
溶液玻璃化过程中的主要热学性质进行了测定。其中包括玻璃化与反玻璃化温度的测定,玻
璃化过程中比热的测定。结果表明加入 HA 纳米颗粒后的丙三醇溶液的反玻璃化温度(Td)
表现出明显的上升趋势,当溶液浓度高于 50%时玻璃化温度(Tg)也稍有升高;加入纳米颗
粒后溶液在整个玻璃化过程中比热明显减小,并且减小程度与 HA 颗粒浓度及粒径大小均表
现出一定的非线性关系。
关键词纳米颗粒玻璃化反玻璃化比热 DSC

THERMAL PROPERTIES OF NANO-CRYOPROTECTANT
SOLUTIONS DURING VITRIFICATION EXAMINED WITH DSC


Xu Haifeng Hao Baotong Liu Lianjun Tang Linli Liu Baolin
(Institute of Biothermal Science, University of Shanghai for Science and technology, shanghai 200093, china)

错误!未找到引用源。Abstract To study the effects of the nanoparticles on thermodynamic
parameter of PVP cryoprotectant solutions, the DSC were used to measure the vitrification
temperature , devitrification temperature and the specific heat of the Glycerol solutions
with/without nanoparticiles in the paper. The result shows that devitrification temperature(Td) rises
significantly ; when the solution concentration is more than 50%, vitrification temperature has a
little rising tendency. The specific heat reduces by nanoparticles during the whole glass transtion
process, and the reduction is nonlinear relationship with nanoparticle concentration and size.
Keywords Nanoparticle Vitrification Devitrification Specific heat DSC



基金项目:国家自然科学基金(),教育部新