A COMPARATIVE STUDY OF STRUCTURAL AND MORPHOLOGICAL CHARACTERISTICS OF POLYPYRROLE WITH CHEMICAL OXIDATION BY IRON(III) CHLORIDE, MICROEMULSION POLYMERISATION BY AMMONIUM PERSULFATE AND MICROEMULSION POLYMERISATION BY FeCl3; [Satu Kajian Perbandingan Ciri-Ciri Struktur dan Morfologi Polipirol dengan Pengoksidaan Kimia oleh Besi (III) Klorida Pempolimeran Mikroemulsi oleh Ammonium Persulfat dan Pempolimeran Mikroemulsi oleh FeCl3]

• Published in: Malaysian Journal of Analytical Sciences
• Main Author: Das M.J.; Yusoff M.Z.M.; Kamil S.A.; Jawad Al-Taie A.H.; Yahya M.S.
• Format: Article
• Language: English
• Published: Malaysian Society of Analytical Sciences 2024
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85203253375&partnerID=40&md5=07332ba2e40b53a337d05fb8cd2e972c

Polypyrrole polymers are special polymers in which it has good conductivity of electricity for use in various fields due to its biocompatibility, thermal stability, easy to produce, etc. By use of various polymerisation methods like electro-chemical polymerisation, chemical polymerisation, microemulsion polymerisation, ultra-sonification polymerisation, vapour phase polymerisation, etc., pyrrole monomer is synthesised with various oxidants, dopants, surfactants, etc., to produce polypyrrole polymers. Two methods are widely used to produce polypyrrole one is chemical oxidation, and another is microemulsion polymerisation. There are few research papers on comparative studies of two methods and also between the two-oxidising agent used in the microemulsion method. The main objective is to compare both chemical oxidation by FeCl3 polymerisation with microemulsion by iron(III) chloride and recompare the microemulsion by ammonium persulfate (APS) with microemulsion by iron(III) chloride. Therefore, three samples were first created: 0.1 M chemical oxidation, where iron(III) chloride was used as oxidising agent and sodium dodecyl sulfate as dopant. The second sample was 0.1 M microemulsion where ammonium persulfate was used as oxidant, sodium dodecyl sulfate as dopant, amyl alcohol as stabiliser. The three samples were 0.1 M microemulsion, where the oxidant was iron(III) chloride, sodium dodecyl sulfate acted as dopant, and amyl alcohol as the co-dopant. The three samples were characterised by Fourier-transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), and energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and electrochemical impedance spectroscopy (EIS). The test result from EIS shows that the conductivity of 0.1 M chemical oxidation is 0.2211 S/cm, and that of. © 2024, Malaysian Society of Analytical Sciences. All rights reserved.