纳米微粒对低温保护剂溶液玻璃化性质的影响  

EFFECTS OF NANOPARTICLES ON THE VITRIFICATION OF CRYOPROTECTIVE AGENT SOLUTIONS

作　　者：高志新[1] 郝保同[1] 刘宝林[1] 徐海峰[1] 周国艳[1] 

机构地区：[1]上海理工大学生物系统热科学研究所,上海200093

出　　处：《低温物理学报》2011年第2期107-111,共5页Low Temperature Physical Letters

基　　金：国家自然科学基金(批准号:50776060);教育部新世纪优秀人才计划(批准号:07-0559)资助的课题~~

摘　　要：利用差示扫描量热仪(DSC)研究了加入羟基磷灰石(HA)纳米微粒对低温保护剂溶液玻璃化的影响,实验得到了不同粒径和不同质量浓度的HA纳米微粒加入PVP溶液的玻璃化转变温度与反玻璃化温度.实验结果表明加入纳米微粒能显著的影响低温保护剂溶液的玻璃化性质.且随着纳米微粒质量分数的增加,溶液的玻璃化转变温度与反玻璃化温度均显著降低.40nmHA纳米微粒对溶液的反玻璃化温度影响最显著,溶液的玻璃化稳定性也最低.In order to investigate the effects of Nanoparticles on the vitrification of Cryprotective agent solutions at cryogenic temperatures,the vitrification and devitrification temperature of these solutions with different particle size and concentrations of HA nanoparticles were measured by differential scanning calorimeter （DSC）.Experimental results indicate that the vitrification can be significantly affected by nanoparticles.And with the mass fraction of nanometer particles increasing,the vitrification and devitrification temperature of solutions significantly reduced.The effects of 40nmHA nanoparticles are the most obvious.And the vitrification stability of solutions is the minimum.

关 键 词：纳米微粒 玻璃化 反玻璃化 DSC 

分 类 号：Q813[生物学—生物工程]