Polyaniline synthesized with functionalized sulfonic acids for blends manufacture
AUTOR(ES)
Cardoso, Mara Joelma Raupp, Lima, Martha Fogliato Santos, Lenz, Denise Maria
FONTE
Materials Research
DATA DE PUBLICAÇÃO
2007-12
RESUMO
Polyaniline (PAni), an electronic conductive polymer, has poor mechanical properties, such as low tensile, compressive and flexural strength that render PAni a non-ideal material to be processed for practical applications. Desired properties of polyaniline can be enhanced by mixing it with a polymer that has good mechanical properties. In this work, PAni was synthesised using functionalized sulfonic acids like camphorsulfonic acid (CSA) and dodecilbenzene sulfonic acid (DBSA) in order to promote PAni doping and improve its solubility, making possible conductive blends manufacture. The different forms of PAni were characterized by infra-red spectroscopy, thermal analysis, scanning electron microscopy and conductivity measurements. A conductive blend composed of PAni/DBSA and lower density polyethylene (LDPE) was obtained via solubilization method and its thermal, morphological and electrical properties were investigated. Concentrations as low as 5 wt. (%) of PAni was able to lead to electrical conductivities of PAni/LDPE blends in the range of 10-3 S.cm-1, showing great potential to be used in antistatic packing, electromagnetic shielding, anti-corrosion shielding or as a semiconductor.
Documentos Relacionados
- Sustainable and Reusable Sulfonic Acid-Functionalized Task-Specific Ionic Liquid Catalysts for Multicomponent Reactions. A Review
- Rheological behavior of acrylic paint blends based on polyaniline
- Characterization of conducting polyaniline blends by Resonance Raman Spectroscopy
- AC electrical conductivity of Cr-doped polyaniline/poly(vinyl alcohol) blends
- SULFONIC ACID-FUNCTIONALIZED LUS-1: AN EFFICIENT CATALYST FOR ONE-POT SYNTHESIS OF 2,4-DIAMINO PYRIMIDINE-5-CARBONITRILE DERIVATIVES