Measurement scheme to detect α relaxation time of glass-forming liquid  

作　　者：Xing-Yu Zhao Li-Na Wang Hong-Mei Yin Heng-Wei Zhou Yi-Neng Huang 赵兴宇;王丽娜;尹红梅;周恒为;黄以能(National Laboratory of Solid State Microstructures,School of Physics,Nanjing University,Nanjing 210093,China;Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters,College of Physical Science and Technology,Yili Normal University,Yining 835000,China)

机构地区：[1]National Laboratory of Solid State Microstructures,School of Physics,Nanjing University,Nanjing 210093,China [2]Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters,College of Physical Science and Technology,Yili Normal University,Yining 835000,China

出　　处：《Chinese Physics B》2019年第8期276-281,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.11664042)

摘　　要：A measurement scheme for detecting theαrelaxation time(τ)of glass-forming liquid is proposed,which is based on the measured ionic conductivity of the liquid doped with probing ions by low-and middle-frequency dielectric spectroscopy and according to the Nernst-Einstein,Stokes-Einstein,and Maxwell equations.The obtainedτvalues of glycerol and propylene carbonate by the scheme are consistent with those obtained by traditional dielectric spectroscopy,which confirms its reliability and accuracy.Moreover,theτof 1,2-propanediol in a larger temperature range is compared with existing data.A measurement scheme for detecting the α relaxation time(τ) of glass-forming liquid is proposed, which is based on the measured ionic conductivity of the liquid doped with probing ions by low-and middle-frequency dielectric spectroscopy and according to the Nernst–Einstein, Stokes–Einstein, and Maxwell equations. The obtained τ values of glycerol and propylene carbonate by the scheme are consistent with those obtained by traditional dielectric spectroscopy, which confirms its reliability and accuracy. Moreover, the τ of 1,2-propanediol in a larger temperature range is compared with existing data.

关 键 词：αrelaxation IONIC CONDUCTIVITY GLASS-FORMING liquid DIELECTRIC spectroscopy 

分 类 号：TQ171.1[化学工程—玻璃工业]