Bioinspired Antiswelling Hydrogel Sensors with High Strength and Rapid Self-Recovery for Underwater Information Transmission
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 29, 2025
Hydrogel-based
sensors
typically
demonstrate
conspicuous
swelling
behavior
in
aqueous
environments,
which
can
severely
compromise
the
mechanical
integrity
and
distort
sensing
signals,
thereby
considerably
constraining
their
widespread
applicability.
Drawing
inspiration
from
multilevel
heterogeneous
structures
biological
tissues,
an
antiswelling
hydrogel
sensor
endowed
with
high
strength,
rapid
self-recovery,
low
ratio
was
fabricated
through
a
water-induced
phase
separation
coordination
cross-linking
strategy.
A
dense
architecture
developed
by
integration
of
"rigid"
quadridentate
carboxyl-Zr4+
bonds
"soft"
hydrophobic
unit-rich
regions
featuring
π-π
stacking
cation-π
interactions
into
hydrogels.
This
unique
structural
design
facilitated
progressive
breaking
cross-links
within
network
to
under
external
loads,
effectively
dissipating
energy
imparting
hydrogels
exceptional
characteristics,
evidenced
strength
1.42
MPa,
complete
self-recovery
3
min.
Simultaneously,
dynamic
synergistically
conferred
augmented
elastic
retractive
forces
on
enhancing
density,
providing
prominent
capabilities
water
(with
only
-2.49%),
solutions
diverse
pH
(1-9),
seawater.
Moreover,
manifested
favorable
strain-sensitivity
(gauge
factor
up
2.45)
frequency
response
virtue
collaborative
contribution
ions
(Cl-
Zr4+).
Consequently,
were
utilized
assemble
underwater
capacity
transmit
information
using
Morse
code.
bioinspired
methodology
achieved
desired
mechanical,
swelling-resistant,
performance
hydrogels,
contributing
innovative
insights
toward
advancement
technology.
Язык: Английский
Soft Thermoplastic Polyurethane/Silver Nanowire Membranes with Low Hysteresis for Large Strain Sensing and Joule Heating
Chunfa Ye,
Tianyu Cang,
Jixiang Zhu
и другие.
ACS Applied Polymer Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 17, 2024
Язык: Английский
Lignin-Mediated Dual Conductive Hydrogels with High Conductivity, Antibacterial Activity and Biocompatibility for Chronic Wound Repair
Jianhong Lin,
Mengyao Chen,
Wei Zhao
и другие.
Gels,
Год журнала:
2025,
Номер
11(4), С. 283 - 283
Опубликована: Апрель 11, 2025
In
recent
years,
conductive
polymer
hydrogels
based
on
polypyrrole
(PPy)
combined
with
electrical
stimulation
(ES)
have
emerged
as
a
promising
approach
for
chronic
wound
repair.
However,
in
practical
applications,
PPy
often
exhibits
limitations
such
poor
water
dispersion,
weak
inherent
conductivity
and
lack
of
biological
functionality.
To
address
these
challenges,
this
study
proposes
an
innovative
design
hydrogel
that
employs
natural
biopolymer,
lignin
sulfonate
(Lgs),
both
dispersant
dopant
PPy,
while
incorporating
silver
nanoparticles
(Ag
NPs)
to
confer
the
antibacterial
properties.
The
results
showed
dispersion
was
significantly
improved,
high
2.82
±
0.04
mS/cm
through
double
conduction
mechanism
Ag
NPs.
exhibited
activity
against
Escherichia
coli
(E.
coli)
Staphylococcus
aureus
(S.
aureus),
rate
could
exceed
90%.
vitro
tests
demonstrated
good
biocompatibility,
adhesion
ability
(7.97
0.56
kPa)
hemostatic
ability.
Furthermore,
vivo
animal
experiments
ES
achieved
93.71
2.46%
closure
within
14
days,
which
can
accelerate
healing,
promote
collagen
deposition
epithelial
tissue
regeneration.
These
findings
demonstrate
developed
serve
effective
platform
ES-assisted
Язык: Английский
Self-healable, Temperature-Sensitive, pH-Sensitive Ti3C2TX MXene Hydrogel as an Epidermal Sensor
Journal of Electronic Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 10, 2025
Язык: Английский
Hydrophobic association hydrogel with toughness, high stretch, and sensitivity for flexible sensing
Journal of Applied Polymer Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 12, 2024
Abstract
Polypyrrole
(PPy),
as
a
highly
conductive
polymer,
is
limited
in
application
due
to
the
difficulty
of
uniform
dispersion
hydrogels.
To
improve
compatibility
PPy
with
hydrogels,
xanthan
gum
(XG)
employed
an
emulsifier
homogeneously
disperse
pyrrole
(Py)
water.
XG
used
template
for
situ
polymerization,
and
coated
on
form
nanoparticles
(PX)
core‐shell
structure,
enabling
be
dispersed
uniformly
water
long
time.
PX
are
combined
pure
hydrophobic
association
hydrogel
(HA)
HA/PX
nanocomposite
hydrogel.
The
2%
hydrogels
exhibiting
high
toughness
(equivalent
5.1
MJ/m
3
)
sensitivity
(GF
=
11.07
600%–1400%
strain
range)
prepared
by
combining
dynamic
cross‐linking
sites,
well
hydrogen
bonding
between
cross‐linked
network.
test
results
show
that
sensor
has
excellent
sensing
durability
(800
cycles
100%
strain)
ability
accurately
detect
human
joint
movements
voice
recognition
handwriting
recognition.
new
method
preparation
flexible
electronic
materials,
which
great
promise
field
sensors.
Язык: Английский