|
authors |
Goncalves, SSL; Rudnitskaya, A; Sales, AJM; Costa, LMC; Evtuguin, DV |
|
nationality |
International |
|
journal |
MATERIALS |
|
author keywords |
LignoBoost((R)) kraft lignin; potentiometric sensors; carbon nanotubes; impedance spectroscopy; transition metals |
|
keywords |
CARBON NANOTUBES; ELECTRODES; IMPEDANCE; SENSORS; FILMS |
|
abstract |
This study reports the synthesis of polyurethane-lignin copolymer blended with carbon multilayer nanotubes to be used in all-solid-state potentiometric chemical sensors. Known applicability of lignin-based polyurethanes doped with carbon nanotubes for chemical sensing was extended to eucalyptus LignoBoost((R)) kraft lignin containing increased amounts of polyphenolic groups from concomitant tannins that were expected to impart specificity and sensitivity to the sensing material. Synthesized polymers were characterized using FT-MIR spectroscopy, electrical impedance spectroscopy, scanning electron microscopy, thermogravimetric analysis, and differential scanning calorimetry and are used for manufacturing of all solid-state potentiometric sensors. Potentiometric sensor with LignoBoost((R)) kraft lignin-based polyurethane membrane displayed theoretical response and high selectivity to Cu (II) ions, as well as long-term stability. |
|
publisher |
MDPI |
|
isbn |
1996-1944 |
|
year published |
2020 |
|
volume |
13 |
|
issue |
7 |
|
digital object identifier (doi) |
10.3390/ma13071637 |
|
web of science category |
Materials Science, Multidisciplinary |
|
subject category |
Materials Science |
|
unique article identifier |
WOS:000529875600155
|
