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Morphological and Structural Analysis of Polyaniline and Poly( o -anisidine) Layers Generated in a DC Glow Discharge Plasma by Using an Oblique Angle Electrode Deposition Configuration

机译:直流辉光放电等离子体中生成的聚苯胺和聚邻氨基苯甲酸层的形态和结构分析

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This work is focused on the structural and morphological investigations of polyaniline and poly( o -anisidine) polymers generated in a direct current glow discharge plasma, in the vapors of the monomers, without a buffer gas, using an oblique angle-positioned substrate configuration. By atomic force microscopy and scanning electron microscopy we identified the formation of worm-like interlinked structures on the surface of the polyaniline layers, the layers being compact in the bulk. The poly( o -anisidine) layers are flat with no kind of structures on their surfaces. By Fourier transform infrared spectroscopy we identified the main IR bands characteristic of polyaniline and poly( o -anisidine), confirming that the polyaniline chemical structure is in the emeraldine form. The IR band from 1070 cm ?¢????1 was attributed to the emeraldine salt form of polyaniline as an indication of its doping with H + . The appearance of the IR band at 1155 cm ?¢????1 also indicates the conducting protonated of polyaniline. The X-ray diffraction revealed the formation of crystalline domains embedded in an amorphous matrix within the polyaniline layers. The interchain separation length of 3.59 ???? is also an indicator of the conductive character of the polymers. The X-ray diffraction pattern of poly( o -anisidine) highlights the semi-crystalline nature of the layers. The electrical conductivities of polyaniline and poly( o -anisidine) layers and their dependence with temperature are also investigated.
机译:这项工作的重点是使用倾斜角位基板结构,在直流辉光放电等离子体中,在没有缓冲气体的情况下,在单体的蒸气中,在直流辉光放电等离子体中生成的聚苯胺和聚邻氨基苯甲酸聚合物的结构和形态研究。通过原子力显微镜和扫描电子显微镜,我们确定了在聚苯胺层表面上形成蠕虫状的相互连接的结构,这些层在整体上是致密的。聚(邻茴香胺)层是平坦的,其表面上没有任何结构。通过傅立叶变换红外光谱,我们确定了聚苯胺和聚邻茴香胺的主要红外波段特征,证实了聚苯胺的化学结构为翡翠形式。 1070cm -1处的IR谱带归因于聚苯胺的翡翠盐形式,表明其掺杂有H +。在1155cm -1处IR带的出现还表明聚苯胺的质子化。 X射线衍射揭示了嵌入聚苯胺层内的无定形基质中的晶畴的形成。链间分离长度为3.59 ????也是聚合物导电特性的指标。聚(邻-茴香胺)的X射线衍射图突出了层的半结晶性质。还研究了聚苯胺和聚(邻-茴香胺)层的电导率及其对温度的依赖性。

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