Synthesis and properties of amphiphilic poly(ethylene oxide)-grafted cardo poly(aryl ether sulfone) copolymers
作者:Qiang Zhang、Suobo Zhang、Weihui Bi
DOI:10.1016/j.polymer.2011.10.006
日期:2011.11
7°, 20° lower than those of poly(aryl ether sulfone) membranes (82–86°), indicating that the PEO side chains improved the hydrophilicity of the membranes. Wide-angle X-ray diffraction results indicated that the PES-g-PEO membranes possessed an amorphous structure, that is, crystallization of the PEO side chains did not occur. The Li-ion conductivity reached 2.26 × 10−4 S/cm at room temperature, much
通过“接枝”技术合成了一系列具有刚性聚(芳醚砜)骨架和柔性PEO侧链的梳型两亲共聚物(PES-g-PEO)。通过控制单体的进料比,制备了具有一定PEO侧链含量的高分子量共聚物,并将其用于形成坚韧而柔软的膜。PES-g-PEO膜显示出高的热稳定性(T d > 230°C)和良好的机械性能。PES-g-PEO膜的水接触角在60.5°至66.7°的范围内,比聚(芳基醚砜)膜(82-86°)的水接触角低20°,表明PEO侧链提高了亲水性。膜。X射线广角衍射结果表明,PES-g-PEO膜具有无定形结构,即没有发生PEO侧链的结晶。锂离子电导率 在室温下达到2.26×10 -4 S / cm,比纯PEO基体系的电导率(10 -6 S / cm)高得多,这是由于锂离子电导率之间存在无定形PEO侧链。 PES骨架,可提供有效的锂离子转运途径。