Electrical, mechanical, and thermal analysis of natural rubber/polyaniline-Dbsa composite

AUTOR(ES)

Silva, Michael Jonas da, Sanches, Aléx Otávio, Malmonge, Luiz Francisco, Malmonge, José Antonio

FONTE

Mat. Res.

DATA DE PUBLICAÇÃO

20/05/2014

RESUMO

A composite of natural rubber (NR) with polyaniline (PANI) was obtained by mixing an aqueous dispersion of dodecylbenzenesulfonic acid (DBSA)-doped PANI with NR latex in different concentrations. Films were obtained by the casting method and characterized by ultraviolet visible near-infrared (UV-Vis-NIR) spectroscopy, thermogravimetry/differential thermogravimetry (TG/DTG), stress-strain testing, differential scanning calorimetry (DSC), and DC electrical conductivity measurements. The UV-vis-NIR spectrum showed that PANI remained doped in the composite, and this improved the mechanical and electrical proprieties of NR films and afforded them good thermal stability up to ~200ºC. The percolation threshold did not follow the universal critical exponent, and in this case, conduction preferentially occurs by hopping and tunneling.

Documentos Relacionados

• Electrical, Thermal and Mechanical Properties of Epoxy/CNT/Calcium Carbonate Nanocomposites
• Determination of Microstructure, Mechanical, Electrical and Thermal Properties of The Directionally Solidified Al-Si-Co Ternary Alloy
• Mechanical, thermal, and barrier properties of methylcellulose/cellulose nanocrystals nanocomposites
• International Bibliography on Burns: Thermal, Electrical, Chemical, Radiation, Cold Injuries
• Electrical and thermal properties of PLA/CNT composite films