摘要
研究了由分子量为400的聚环氧乙烷(PEO400)、碱金属盐(NaI、LiClO_4或LiBF_4)与环氧树脂或不饱和聚酯树脂形成的互穿聚合物网络(IPN)的离子电导率与温度的关系,发现其1olσ-1/T符合Afrhenius公式,但在333K处直线斜率出现转折。这一现象可能与其中的PEO400-碱金属盐络合物具有某种有序结构有关。环氧树脂IPN的室温电导率达3×10^(-5)Scm^(-1),不饱和聚酯树脂IPN的室温电导率较低,(σ_(RT)=2×10^(-6)Scm^(-1)。然而,若在后者的聚酯大分子链中引入PEO400链段,增加它们与PEO400/LiClO_4络合物的相容性,则室温电导率与环氧树脂IPN相同,σ_(RT)=3×10^(-5)Scm^(-1)。
The condutance/temperature behaviour of two kind of the interpenetrating polymer network (IPN) consisting of epoxy or unsatured polyester resin and low molecular weight poly (ethylene oxid) (PEO400) complexes with Nal, LiClO4 or LiBF4 have been studied. The results showed that although all the systems were completely amorphous, the relationships of log a vs 1/T could be described by an Arrhenious-type relation, but their linear line slopes were all changed at about 333K except for that including higher content of polyester resin (more than 50 wt%).Furthermore, the relationships between the conductance of PEO400 complexes with NaI or LiClO4 and the temperature were also examined and were the same as that of those IPNs.These phenomena could be therefore attributed to some ordered structure of PE0400 complexes in amorphous state, which may be transfered at about 333K,
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1990年第3期50-54,共5页
Polymer Materials Science & Engineering
基金
国家自然科学基金
