Citation: PENG Xinsheng, BA Hengfei, QIAO Ziwen, CHEN Donglin, WANG Fosong. VISCOELASTICITY AND IONIC CONDUCTIVITY OF TWO-COMPONENT EPOXY NETWORK CONTAINING LITHIUM PERCHLORATE*[J]. Chinese Journal of Polymer Science, ;1991, 9(2): 120-129. shu

VISCOELASTICITY AND IONIC CONDUCTIVITY OF TWO-COMPONENT EPOXY NETWORK CONTAINING LITHIUM PERCHLORATE*

PENG Xinsheng ^{**，巴恒飞，乔自文，陈东霖，王佛松} ,
BA Hengfei ,
QIAO Ziwen ,
CHEN Donglin ,
WANG Fosong

Received Date: 23 March 1990

Polymeric solid electrolyte system composed of triglycidyl ether of glycerol (TGEG), diglycidyl ether of polyethylene glycol (DGEPEG)and LiClO4 salt were synthesized. In this" system the electrolyte has a pecularity that not merely can the LiClO4 provide ionic carriers, but also catalyze the crosslinking reaction without adding an usual curing agent. The effect of salt content and degree of crosslinking on the viscoelasticity and ionic conductivity were studied. Both WLF and VTF equations were used to treat the experimental data in order to elucidate the mechanism of ionic conduction.It was found that the ionic conductivity of the system is carried out through the segmental motion mechanism.However,the data must be treated with care.For example,in evaluating WLF parameters,the contribution concerned with ionic carrier generation with temperature to the conductivity must be differentiated from that concerned with segmental motion.Besides,the temperature range suitable to WLF equation must also be considered.For VTF equation,it might be inapplicable if the temperature is too low and close to the glass transition temperature of the specimen.Further study is needed in order to have a quantitative information on the limitation of these equations.
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