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首页> 外文期刊>Journal of Applied Polymer Science >Polymerization of polyaniline under various concentrations of ammonium peroxydisulfate and hydrochloric acid by ultrasonic irradiation
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Polymerization of polyaniline under various concentrations of ammonium peroxydisulfate and hydrochloric acid by ultrasonic irradiation

机译：超声辐射通过多种浓度的铵过氧硫酸铵和盐酸聚合聚苯胺

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摘要

Effects of various molar ratios of monomer (aniline), oxidant (ammonium peroxydisulfate), and dopant (hydrochloric acid) on the polymerization of polyaniline (PANI) were investigated using direct ultrasonic irradiation technique. The effects of varying molar ratio of dopant and oxidant on the structural stability, morphology, and electrical conductivity of the prepared PANI were studied. Firstly, a scheme derived from electrical conductivity point of view, by varying the molar ratio of ammonium peroxydisulfate (APS). As the molar ratio of APS to aniline (ANI) varied from 0.1 to 1.25, the conductivity of PANI reached a maximum of 0.24 S/cm at a ratio of 1. Thereafter, by fixing the optimized molar ratio of APS and aniline the molar ratio of hydrochloric acid (HCl) was varied. The conductivity of PANI increased with an increase of HCl concentration and reached a maximum of 0.5 S/cm at an HCl concentration of 2 M. Finally, the formation mechanism for polymerization of PANI were discussed using Fourier transform infrared spectra, ultraviolet-visible spectra, nuclear magnetic resonance spectroscopy, and X-ray diffraction spectroscopy. The final product is in protonated form, possessing structural stability and electrically conductive.
机译：采用直接超声辐照技术研究了单体（苯胺）、氧化剂（过硫酸铵）和掺杂剂（盐酸）的不同摩尔比对聚苯胺（PANI）聚合的影响。研究了不同掺杂剂和氧化剂摩尔比对制备的聚苯胺结构稳定性、形貌和导电性的影响。首先，从导电性的角度出发，通过改变过硫酸铵（APS）的摩尔比，提出了一种方案。当APS与苯胺（ANI）的摩尔比在0.1到1.25之间变化时，PANI的电导率在1的摩尔比下达到最大值0.24 S/cm。然后，通过固定APS和苯胺的最佳摩尔比，改变盐酸（HCl）的摩尔比。PANI的电导率随着HCl浓度的增加而增加，在HCl浓度为2m时达到最大值0.5s/cm。最后，利用傅里叶变换红外光谱、紫外可见光谱、核磁共振光谱和X射线衍射光谱讨论了PANI聚合的形成机理。最终产物为质子化形式，具有结构稳定性和导电性。

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