Conductive polymer nanocellulose aerogels and use as strain sensor
View Patent ↗The present disclosure provides an aerogel comprising conductive polymers and cellulose nanofibrils (CNF). The present disclosure also provides a sensor comprising the aerogels of the present invention.
1. An aerogel composition comprising:
a conductive polymer; and
cellulose nanofibrils (CNF), wherein the CNF is present in the composition at from 10% to 90% (w/w).
2. The composition of claim 1 , wherein the conductive polymer is an acidic conductive polymer.
3. The composition of claim 1 , wherein the conductive polymer comprises a mixture of poly(3,4-ethylene dioxythiophene) (PEDOT) and poly(styrene sulfonate) (PSS).
4. The composition of claim 3 , wherein the mixture comprises a ratio of PEDOT to PSS of 1:1 to 1:10 (w/w).
5. The composition of claim 3 , wherein the mixture comprises a ratio of PEDOT to PSS of about 1:2.5 (w/w).
6. The composition of claim 1 , wherein the CNF is present in the composition at from 25% to 75% (w/w).
7. The composition of claim 1 , wherein the conductive polymer comprises a mixture of poly(3,4-ethylene dioxythiophene) (PEDOT) and poly(styrene sulfonate) (PSS) in a ratio of about 1:2.5 (w/w), and the CNF is present in the composition at about 70% (w/w).
8. A sensor comprising:
a first polymer substrate having a first surface;
a conducting layer comprising an aerogel composition of claim 1 , wherein the conducting layer is deposited on the first surface of the first polymer substrate and having a first end and a second end;
a first electrode at the first end of the conductive layer;
a second electrode at the second end of the conductive layer; and
a second polymer substrate deposited on the conducting layer.
9. The sensor of claim 8 , wherein the first polymer substrate and second polymer substrate is polydimethylsiloxane (PDMS).