Morphology and electrical properties of hybrid and sulphonated oxalic acid-doped polyaniline

作者：Rehim Mona Abdel^*; Youssef Ahmed; Hassan Ebtesam; Khatab Nagwa; Turky Gamal

来源：Synthetic Metals, 2010, 160(15-16): 1774-1779.

DOI：10.1016/j.synthmet.2010.06.019

• Conductive polymers
• Morphology
• Crystallinity

Polyaniline-polyethylene glycol2000 (PAni-PEG2000) hybrid and sulphonated polyaniline (SPAni) were prepared using oxalic acid as dopant and potassium permanganate as oxidant. The properties of these two conductive polymers were studied in comparison with pure polyaniline (PAni) prepared using the same conditions. The investigated polymers were characterized using FTIR. UV-vis, TGA, TEM, SEM, XRD and their electrical conductivities were also investigated. The morphology of pure polymer was found to be flat ribbon-like form, while presence of polyethylene glycol led to the formation of separate nanospheres. The three polymer samples have different degrees of crystallinity, the highest degree is for SPAni. Unexpectedly, electrical conductivity is in the order SPAni > PAni-PEG2000 > PAni, aging of PAni increases gradually the conductivity of the polymer from 0.0056 to 0.023 S cm(-1) and the increase of temperature gradually decreases the conductivity.

• 出版日期2010-8