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2022

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vol. 20 /

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Ahmad Al-Hamdan, Ahmad Al-Falah, Fawaz Al-Deri, and Ibrahim Al-ghoraibi
Synthesis and Characterisation of Poly(2-Formylpyrrole) (PFPy) by Acids Catalysis and Study of Its Particles’ Size
0195–0205 (2022)

PACS numbers: 61.05.cp, 68.37.Hk, 68.37.Ps, 78.30.Jw, 79.60.Fr, 82.35.-x, 82.80.Pv

In this paper, poly(2-formyl pyrrole) (PFPy) is synthesized using hydrochloric acid as catalyst in alcohol. PFPy is dark-green very fine powder. Then, the polymer forms glass substrate in the reaction mixture. The resulting polymer is characterized by FTIR, EDX and XPS to determine the polymer structure. The polymer is scanned by scanning electron microscope (SEM), and its film is investigated by atomic force microscope (AFM) for its morphological properties. We found the polymer consisting of spherical particles with a rough surface (with average diameters of 430 nm), and they form clusters. We propose a method for calculation of particles’ size depending on the crystals’ size (by means of the Scherrer equation) and percentage of crystallization of polymer from XRD analysis. The average particles’ size is of 336.7 nm. The particles’ size in this method may be closer to reality because the XRD analysis includes a large number of particles, and it is not optional as based on the SEM and AFM characterization.

Key words: polymerization, acid catalysis, XRD, particles’ size, polyformyl pyrrole.

https://doi.org/10.15407/nnn.20.01.195

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