摘要
利用 FT- IR和计算机技术对合成的聚氧化乙烯聚氨酯 (PEU)或硬段聚氨酯 (HD) /Na Cl O4体系中的离子存在状态进行了研究 ,并利用复阻抗谱分析、光学显微镜和 DSC对样品进行了表征 ,研究了不同条件下的离子存在状态及与体系中离子传导的关系。研究发现 ,当 [O]/[Na]为 12时 ,样品中已无盐的结晶存在 ,其有效离子数比例较高 ;样品的玻璃化温度最低、电导率最高。同时发现 ,羰基络合可以促进高氯酸钠的溶解 ,提高自由离子数比例 ,但羰基对离子传导起阻碍作用 ,导致样品的电导率降低。
Solid polymer electrolytes based on polyether urethane and salts were obtained by mixing polyurethane and salts. FT IR spectroscopy was used to study ionic association in polymer electrolytes. The electrolytes were characterized by FT IR spectroscopy, impedance analysis, optical micrographs and DSC. The IR spectra were dealt with computer. The results showed that different conditions such as temperature and salt concentration strong effect on ionic state and ionic conductivity. It was found that carbony cation interaction results in decrease of the ionic conductivity. The carbony cation interaction redounds to the salts′ solution. But it does′t help to the conductivity of ions. FT IR spectroscopy is an effective method to research the ionic estate in solid polymer electrolytes.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2002年第4期162-165,共4页
Polymer Materials Science & Engineering
