Poly(aniline)/poly(methylmethacrylate) films obtained from waterborne latex nanoparticles

Abstract

This paper presents the characterization of poly(aniline) (PANI) and poly(methyl methacrylate) (PMMA) coatings obtained by mixing PANI with PMMA aqueous dispersions (latex particles). These dispersions were characterized by using dynamic light scattering for sizing, zeta-potential analysis and thermal analysis. PMMA and PANI/PMMA dispersions show negative charged particles with zeta potential greater than |40| mV, a zeta-average diameter of 64 nm for pure PMMA and a bi-modal particle-size distribution centered at 45 and 120 nm for a mixture with 25% w/w of PANI. Films obtained by casting were characterized by using scanning electron microscopy and they show a conductivity increase upon PANI content reaching a value of 1 mS cm -1 for a film with 25% w/w of PANI. In addition, Raman spectroscopy have shown the presence of the conducting form of PANI in the films and cyclic voltammetry experiments corroborated that they are electroactive in both acid and neutral solutions.

Characterization of Copolymer Based in Polyurethane and Polyaniline (PU/PANI)

“…The SEM micrograph of PU reveals a smooth continuous phase; some bumps appear on the micrograph, due to that the picture was taken from the fractured part of the polymer. Also, it can be seen the PANI form a homogeneous network, that which is a characteristic that causes the plastificant (NMP) during the synthesis, and it coincided with that reported by Nabid et al [33] who also appreciated that the PANI surface presented a fibrial morphology with the extraction of NMP due to THF. Figure 4(c) displays the morphology of IPN with PANI contents of 30%.…”