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3,4-乙撑二氧噻吩(EDOT)以木质素磺酸(LS)作载体,通过化学氧化法聚合形成了聚(3,4-乙撑二氧噻吩)/木质素磺酸(PEDOT/LS)导电复合物.该导电复合物的结构与性能分别采用紫外可见分光光度计、红外光谱仪、zeta电位及粒度分析仪、原子力显微镜、X-射线光电子能谱仪、X-射线衍射仪、四探针测试仪、电泳仪,以及表面电阻仪来表征.结果表明,EDOT能在LS水溶液中氧化聚合,得到水分散性PEDOT/LS导电颗粒.该颗粒是一种聚电解质复合物,等量电荷配比的PEDOT/LS位于内核而富余的亲水性LS包在外层.LS与PEDOT两者之间存在较强的作用力,无法通过电泳分开.X-射线衍射仪结果表明该复合物是无定型的.当LS与EDOT单体质量比从0.7∶1升高至3.0∶1时,复合物的粒径从673 nm降低至348 nm,涂膜表面变得均匀,同时表面电阻从1.9 kΩ/sq上升至87.2 kΩ/sq.用PEDOT/LS配置得到的抗静电剂,可以使玻璃片表面电阻从1012Ω/sq减小至107Ω/sq.
The 3,4-ethylenedioxythiophene (EDOT) was polymerized by chemical oxidation using lignosulfonic acid (LS) as carrier to form poly (3,4-ethylenedioxythiophene) / lignosulfonic acid (PEDOT / LS) conductive composites.The structures and properties of the conductive composites were characterized by UV-visible spectrophotometer, infrared spectroscopy, zeta potential and particle size analyzer, atomic force microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, Probe tester, electrophoresis apparatus and surface resistance meter.The results show that EDOT can be oxidatively polymerized in LS aqueous solution to obtain water-dispersible PEDOT / LS conductive particles.The particles are a polyelectrolyte complex, the equivalent charge The proportioning PEDOT / LS is located in the core while the surplus hydrophilic LS package is in the outer layer. There is a strong force between LS and PEDOT, which can not be separated by electrophoresis. X-ray diffractometry results show that the complex is absent When the mass ratio of LS to EDOT monomer was increased from 0.7: 1 to 3.0: 1, the particle size of the composite decreased from 673 nm to 348 nm, the surface of the coating film became uniform and the surface resistance increased from 1.9 kΩ / sq to 87.2 kΩ / sq. With the antistatic agent PEDOT / LS configured, the surface of the glass sheet Resistance decreases from 1012Ω / sq to 107Ω / sq.