摘要
采用三羟甲基丙烷（ＴＭＰ）作交联剂与聚乙二醇（ＰＥＯ－１５４０）和甲苯二异氰酸酯（ＴＤＩ）反应，得到了具有较好力学性能的交联型聚醚聚氨酯（ＰＥＵ），该聚合物与ＬｉＣｌＯ４的结合物具有较高的室温电导率（σ３０℃＝１．８７×１０￣（－４）Ｓ／ｃｍ）。采用全反射红外光谱（ＡＴＲ－ＩＲ）对聚合物的结构进行了表征。对聚合物的组成、不同ＴＤＩ类型及络合盐浓度对聚合物力学性能及其络合物电导率的影响进行了探讨。低度交联聚合物的络合物，其电导率与温度的关系符合建立在自由体积理论上的ＶＴＦ方程，表明络合物中离子的传导主要是在无定形区域进行，与自由体积有关。
Crosslinked poly(ether urethane)(PEU)with good mechanical properties was synthesized from poly(ethylene glycol)(PEO-1540),toluene diisocyanate(TDI)and trimethylol propane(TMP) as crosslinking agent.The polymer structure was characterized by ATR-IR.The complex of the polymer with LiClO4 shows high ionic conductivity at room temperature(σ30 c=1.87×10￣(-4)S/cm).The effects of the polymer composition.The different isomers of TDI and the concentration of LiClO4 on its conductivity of the polymer complex and mechanical properties of the polymer was studied.For the slight crosslinked complex, the dependence of ionic conductivity on the temperature is adaptable to VTF equation.This result indicated that ionic carrier transportation in the complex is carried out in amorphous phase and is in close relationship with free volume of the systems.
出处
《高分子材料科学与工程》
CSCD
北大核心
1994年第5期103-108,共6页
Polymer Materials Science & Engineering
基金
国家自然科学基金
关键词
聚醚
聚氨酯
金属盐络合物
导电
s:poly(ether urethane)
solid polymer electrolyte
ionic conductivity
mechanical properties
salt complex.
