摘要
以聚醚聚氨酯、高氯酸钠和硬段模型化合物为组分 ,制备了一系列新型的聚合物固体电解质。利用FT- IR、DSC、TG及复阻抗谱分析对该体系进行了表征。结果表明 ,当盐浓度保持恒定时 ,硬段模型化合物对所研究体系的形态、离子 -聚合物间相互作用、玻璃化转变温度、软段热分解温度和离子导电特性均有显著的影响。随着硬段模型化合物含量的增加 ,体系中钠离子与醚氧基团间的络合程度增加 ,玻璃化转变温度和软段热分解温度上升 ,聚氨酯硬段的聚集体出现。所有这些均导致该固体电解质的电导率下降。
A series of novel solid polymer electrol yt es consisting of poly(ether urethane), NaClO 4 and hard-segment model-compoun d (HD) have been prepared. Their properties as solid ion conductors were charact erized by FT-IR, DSC, TG and impedance analysis. The results indicated that, wh en the salt concentration kept a certain value, hard-segment model-compound si gnificantly influences the morphology, ion-polymer interaction, T g, soft -segment thermal decomposition temperature and ionic conductive properties of t he system investigated. With increasing the content of hard-segment model-comp ound, the coordination degree between sodium cation and the ether oxygen group i ncreases, T g of the system and thermal decomposition temperature of polyur ethane soft-segment raises apparently, hard-segment aggregates form, all these led to the decrease of ionic conductivity of the system.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2003年第2期176-179,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目 ( 5 990 30 0 4)
