对含N-烷基咔唑环结构的聚芳醚酮(PPCzE、PPCzB和PPCzH)进行基本物理性能方面的表征,并与商业化酚酞基聚芳醚酮(PEK-C)进行比较.咔唑环结构的引入使聚合物在345 nm附近有强紫外光吸收并表现出发蓝光能力.由于疏水性烷基侧链的存在,聚合物薄膜的水接触角(87°～103°)大于PEK-C(76°),但同时烷基侧链所引起的聚合物链间距的增大导致聚合物的吸水率(0.65％～0.86％)高于PEK-C (0.56％).此外,聚合物表现出较好的尺寸稳定性(平均线膨胀系数6.4×10-5℃-1)和电绝缘性能(体积电阻率1016Ω·cm).聚合物的拉伸模量在1.9 ～2.0 GPa之间,拉伸强度在72.5～75.0 MPa之间以及断裂伸长率在6.5％～7.2％之间.高温条件下(≤225℃),PPCzE仍具有良好的拉伸性能.
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