Ultrastretchable
and Self-Healing Double-Network Hydrogel for 3D Printing and Strain
Sensor
Sijun Liu
Lin Li
10.1021/acsami.7b07445.s001
https://acs.figshare.com/articles/journal_contribution/Ultrastretchable_and_Self-Healing_Double-Network_Hydrogel_for_3D_Printing_and_Strain_Sensor/5242405
On the basis of the thermoreversible
sol–gel transition behavior of κ-carrageenan in water,
a double-network (DN) hydrogel has been fabricated by combining an
ionically cross-linked κ-carrageenan network with a covalently
cross-linked polyacrylamide (PAAm) network. The κ-carrageenan/PAAm
DN hydrogel demonstrated an excellent recoverability and significant
self-healing capability (even when notched). More importantly, the
warm pregel solution of κ-carrageenan/AAm can be used as an
ink of a three-dimensional (3D) printer to print complex 3D structures
with remarkable mechanical strength after UV exposure. Furthermore,
the κ-carrageenan/PAAm DN hydrogel exhibited a great strain
sensitivity with a gauge factor of 0.63 at the strain of 1000%, and
thus, the hydrogel can be used as sensitive strain sensors for applications
in robotics and human motion detection.
2017-07-14 00:00:00
DN
3 D structures
covalently cross-linked polyacrylamide
Strain Sensor
motion detection
hydrogel
3 D Printing
ionically cross-linked κ- carrageenan network
strain sensors
UV exposure
gauge factor
κ- carrageenan
pregel solution
strain sensitivity
Self-Healing Double-Network Hydrogel
self-healing capability