Strain Sensitivity of Carbon Nanotubes Modified Cellulose
Paper i proceeding, 2011

Nanostructured cellulose was modified by different concentration and volume of dispersed multi-walled carbon nanotube (MWCNT) and double-walled carbon nanotube (DWCNT) solutions and its electrical properties were studied. The resulting flexible cellulose films have an electrical conductivity sensitive to changes in CNT concentration and immersion time in solution. The conductivity increases with increasing immersion time and volume and concentration of dispersed solutions; the conductivity for bacterial cellulose (BC) pellicles modified with DWCNT was increased from 0.034 S cm-1 to 0.15 S cm-1 and for BC pellicles modified with MWCNT it was increased from 0.12 S cm-1 to 1.6 S cm-1 when the immersion time was increased from 24 h to 72 h. These results are significantly higher than in previously reported work [1]. The effect of strain on the resistance during application of tensile force is shown for a simple strain gauge employing cellulose with incorporated DWCNTs. The electrical resistance of the films displays a high sensitivity to strain. It seems that this sensitivity depends on the modifying conditions, where BC pellicles which are modified in a dispersed solution with a higher concentration of CNTs show larger changes in resistance with the changes in fractional extension

sensor

conductive cellulose

carbon nanotubes

Författare

Farshad Toomadj

Chalmers, Teknisk fysik, Elektronikmaterial och system

Sadia Farjana

Chalmers, Teknisk fysik, Elektronikmaterial och system

Anke Sanz-Velasco

Chalmers, Teknisk fysik, Elektronikmaterial och system

Olga Naboka

Chalmers, Teknisk fysik, Elektronikmaterial och system

Per Lundgren

Chalmers, Teknisk fysik, Elektronikmaterial och system

Katia Rodriguez

Wallenberg Wood Science Center (WWSC)

Guillermo Toriz Gonzalez

Chalmers, Kemi- och bioteknik, Polymerteknologi

Paul Gatenholm

Wallenberg Wood Science Center (WWSC)

Chalmers, Kemi- och bioteknik, Polymerteknologi

Peter Enoksson

Chalmers, Teknisk fysik, Elektronikmaterial och system

Wallenberg Wood Science Center (WWSC)

Procedia Engineering: 25th Eurosensors Conference; Athens; Greece; 4 September 2011 through 7 September 2011

1877-7058 (ISSN)

Vol. 25 1353-1356

Ämneskategorier

Materialteknik

Kemiteknik

Elektroteknik och elektronik

Styrkeområden

Transport

Produktion

Materialvetenskap

DOI

10.1016/j.proeng.2011.12.334

Mer information

Senast uppdaterat

2018-08-24