RT Journal Article
T1 Extruded polyaniline/EVA blends: Enhancing electrical conductivity using gallate compatibilizers
A1 Dopico García, Mª Sonia
A1 Ares Pernas, Ana Isabel
A1 Lasagabaster Latorre, Aurora
A1 García Fonte, Xoan Xosé
A1 Arboleda Clemente, Laura
A1 Abad López, María José
AB The role played by alkyl gallate compatibilizers to enhance the conductivity of extruded polyaniline (PANI)–polyethylene-co-vinyl-acetate (EVA) composites was investigated. PANI doped with dodecylbenzensulfonic acid (DBSA) with 2 S cm−1 conductivity was synthetized via emulsion pathway. The achievement of doped emeraldine salt was confirmed by infrared and X-ray photoelectron spectroscopy.Two gallic acid compatibilizers, namely octyl gallate (OG) and lauryl gallate (LG) were studied by adding increasing amounts (0–20%) to the composite. Gallate compatibilizers enhanced the conductivity of the blend by one order of magnitude, achieving values similar to the pure polyaniline (1–2 S cm−1) using only 30% of PANI. Infrared spectral changes proved the formation of intermolecular hydrogen bonds between EVA and gallate esters and suggested additional interactions with PANI. These interactions improved the adhesion between PANI and EVA, thus explaining the better dispersion of the PANI observed by SEM and the increase in rheological viscosity and shear rate measurements.
PB Elsevier
SN 0379-6779
YR 2014
FD 2014
LK https://hdl.handle.net/20.500.14352/35353
UL https://hdl.handle.net/20.500.14352/35353
LA eng
NO Supplementary data associated with this article can be found, in the online version, at http://dx.doi.org/10.1016/j.synthmet. 2014.01.009.
NO Ministerio de Economía, Comercio y Empresa (España)
NO Xunta de Galicia
NO European Commission 
DS Docta Complutense
RD 21 mar 2026