2134/37778
Ana M. Rodrigues Rebelo
Ana M. Rodrigues
Rebelo
Yang Liu
Yang
Liu
Changqing Liu
Changqing
Liu
Karl-Herbert Schafer
Karl-Herbert
Schafer
Monika Saumer
Monika
Saumer
Guang Yang
Guang
Yang
Carbon nanotube-reinforced poly(4-vinylaniline)/polyaniline bilayer-grafted bacterial cellulose for bioelectronic applications
Loughborough University
2019
Bacterial cellulose
Poly(4-vinylaniline)/polyaniline bilayer
Carbon nanotubes,
Composite
Bioelectronic interface
Mechanical Engineering not elsewhere classified
2019-05-20 09:12:03
Journal contribution
https://repository.lboro.ac.uk/articles/journal_contribution/Carbon_nanotube-reinforced_poly_4-vinylaniline_polyaniline_bilayer-grafted_bacterial_cellulose_for_bioelectronic_applications/9545528
Microbial cellulose paper treated with polyaniline and carbon nanotubes (PANI/CNTs) can be attractive as
potential flexible capacitors in terms of further improvements
to the conductivity and thermal resistance. The interactions
between PANI and CNTs exhibit new electrochemical features
with increased electrical conductivity and enhanced capacity.
In this study, PANI/CNTs was incorporated into a flexible
poly(4-vinylaniline)-grafted bacterial cellulose (BC/PVAN)
nanocomposite substrate for further functionalization and
processability. PANI/CNTs coatings with a nanorod-like
structure can promote an efficient ion diffusion and charge
transfer, with a significant enhancement of the electrical
conductivity after CNTs reinforcement of 1 order of
magnitude up to (1.0 ± 0.3) × 10−1 S·cm−1
. An escalating
improvement of the double charge capacity (∼54 mF) of the grafted BC nanocomposites was also detected through
electrochemical analysis. The multilayered electrical coatings also reinforce the thermal resistance, preventing anticipated
thermal degradation of the BC substrate. The cell viability and differentiation assays using neural stem cells (SVZ cells) testified
to the cytocompatibility of the grafted BC nanocomposites, while inducing neuronal differentiation over 7 days of culture with a
neurite that was 77 ± 24.7 μm long. This is promising for meeting the requirements in the construction of high-performance
bioelectronic devices that can actively interface biologically, providing a friendly environment for cells while tuning the device
performance.