TY - GEN
T1 - Cryogenic Characteristics and Relaxation Polarization Mechanism of NaCl Aqueous Solutions
AU - Song, Xiaoyuan
AU - Zhong, Lisheng
AU - He, Jiaxi
AU - Qiu, Minchen
AU - Gao, Jinghui
AU - Yu, Qinxue
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/10
Y1 - 2019/10
N2 - In this paper, the crystallization and relaxation of NaCl aqueous solutions at low temperatures were studied by differential scanning calorimetry (DSC) analysis and dielectric analysis. From DSC analysis, the three-phase composite ice structural model consisting of pure ice, salty ice, and amorphous ice after the liquid-solid phase transition of NaCl aqueous solution under low temperature is established. The conversion rate of pure ice decreases monotonically with the increase of solution concentration. From dielectric analysis, the relaxation time of water molecules in composite ice decreases significantly at first and then increases slightly with increasing concentration, while the relaxation activation energy increases significantly at first and then decreases slightly. This is due to the damaging effect of ions on hydrogen bonds between water molecules and the interaction between anions and cations. This study can provide theoretical support and experimental basis for cryopreservation technology of biomaterials controlled by electromagnetic field.
AB - In this paper, the crystallization and relaxation of NaCl aqueous solutions at low temperatures were studied by differential scanning calorimetry (DSC) analysis and dielectric analysis. From DSC analysis, the three-phase composite ice structural model consisting of pure ice, salty ice, and amorphous ice after the liquid-solid phase transition of NaCl aqueous solution under low temperature is established. The conversion rate of pure ice decreases monotonically with the increase of solution concentration. From dielectric analysis, the relaxation time of water molecules in composite ice decreases significantly at first and then increases slightly with increasing concentration, while the relaxation activation energy increases significantly at first and then decreases slightly. This is due to the damaging effect of ions on hydrogen bonds between water molecules and the interaction between anions and cations. This study can provide theoretical support and experimental basis for cryopreservation technology of biomaterials controlled by electromagnetic field.
KW - Bio-dielectrics
KW - NaCl solution
KW - dielectric properties
KW - ice crystallization
KW - relaxation polarization
UR - https://www.scopus.com/pages/publications/85081649317
U2 - 10.1109/CEIDP47102.2019.9009649
DO - 10.1109/CEIDP47102.2019.9009649
M3 - 会议稿件
AN - SCOPUS:85081649317
T3 - Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
SP - 721
EP - 724
BT - 2019 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2019 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2019
Y2 - 20 October 2019 through 23 October 2019
ER -