Effects of Polyaniline Doped by Different Acids on Thermal Stability of Epoxy Resin
Polyaniline(PANI) nanofibers were firstly prepared by rapid mixture method, EP/PANI nanocomposite was obtained by in-situ adding the PANI nanofibers to epoxy resin(EP). Scanning electron microscopy(SEM) proves that the type of doped acids has a little effect on the morphologies of PANI, and the PANI doped by different acids present nanofiber structures with the diameter of about 50 nm. The thermal behaviour of EP/PANI nanocomposites were investigated in detail by using a dynamic rate mode of thermogravimetric analyser (TGA) in inert atmosphere, and the results show that the PANI nanofibers obviously improve thermal stability of pure EP. Compared with EP/PANI doped by nitric acid or sulfuric acid, EP/PANI doped by phosphoric acid has best thermal stability.
Guojun Zhang and Jessica Xu
Q. M. Jia et al., "Effects of Polyaniline Doped by Different Acids on Thermal Stability of Epoxy Resin", Advanced Materials Research, Vols. 160-162, pp. 1405-1408, 2011