ACS Applied Polymer Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 23, 2024
As
a
high-performance
polymer
material,
conductive
hydrogels
are
widely
employed
in
the
fields
of
motion
monitoring,
electronic
skin,
and
energy
storage
devices,
which
rely
on
flexible
materials,
including
hydrogel,
elastomer,
composite
hydrogel.
However,
preparing
hydrogel
with
excellent
mechanical
properties
is
great
challenge.
Inspired
by
structure
crocodile
trilayer
was
prepared.
The
three
layers
were
Ecoflex
poly(acrylamide-2-hydroxyethyl
methacrylate)
(PAAm-HEMA)
graphene/2-hydroxyethyl
methacrylate
(G/PHEMA)
respectively.
Covalent
bonds
generated
photochemical
reaction
between
elastomer
Eco
P(AAm-HEMA)
also
formed
G/PHEMA
chemical
N,N′-methylenebis(2-propenamide),
worked
as
cross-linking
agent;
hydrogen
bonding
these
two
formed.
These
physical
interactions
provided
firm
prevented
interlayer
slippage
under
an
external
force.
G/PHEMA-P(AAm-HEMA)-Eco
possessed
high
fracture
stress
elongation
at
break
up
to
2.1
MPa
1305%,
conductivity
0.028
S/m
attributed
incorporation
graphene
network
Based
electrical
conductivity,
this
applied
sensor
detect
human
signals.
results
indicate
that
represents
promising
paving
way
for
innovative
applications
next-generation
devices.
ACS Applied Polymer Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 9, 2025
Conductive
hydrogels,
widely
recognized
as
flexible
sensor
materials
for
health
monitoring,
pose
a
research
challenge
in
selecting
suitable
frameworks
and
designing
multifunctional
composites
that
balance
conductivity,
transparency,
self-healing,
mechanical
properties.
In
this
work,
simple
efficient
plant-template
method
(corn
husk)
is
used
to
generate
textured
hydrogel
(PPA)
with
PEI
PVA
the
transparent
framework,
without
additional
cross-linking
agents.
The
resulting
exhibits
high
conductivity
(8.56
S/m),
excellent
transparency
(94%
@
550
nm
nontextured
variant),
remarkable
stretchability
(627.1%).
Additionally,
PPA
self-healing
capabilities,
achieving
maximum
efficiency
of
94.68%.
To
enhance
AgNWs
are
applied
surface
using
rod
coating
method,
forming
PPA@RCA
12.39
S/m.
This
improvement
attributed
interactions
between
silver-based
nanomaterials
(AgNWs,
AgNPs),
Li+,
PEI/PVA
framework
PPA@RCA.
wearable
strain
based
on
features
gauge
factor
3.35
instantaneous
response
characteristics
(response
time
195
ms),
exhibiting
exceptional
sensitivity
repeatability
across
diverse
ranges
external
stimuli.
Therefore,
ultrahigh-conductive
hydrogel,
produced
through
strategy,
demonstrates
significant
potential
applications
tablet
capacitive
pens,
writing
devices,
smart
wearables,
monitoring.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 28, 2025
Personal
health
management
drives
the
development
of
intelligent
hydrogel
dressings,
which
pursue
optical
transparency,
stretchability,
and
conductivity
are
required
to
perceive
specific
environmental
stimuli
by
dynamic
structure,
shape,
or
color
memory.
However,
incorporation
weak
perceptive
elements
black
conductive
polymers
limits
fabrication
these
hydrogels.
Herein,
we
propose
smart
hydrogels
with
inscribable
memorizing-forgetting
transparency
behavior
in
situ
degrading
immobilizing
polydopamine-doped
polypyrrole
(PDA-PPy)
nanodots
into
an
interpenetrating
poly(NIPAm-co-acrylic
acid)
copolymer/polyacrylamide
(PNAc/PAM)
network.
These
not
only
optically
transparent
(∼64.99%),
stretchable
(∼1052%),
self-adhesive
(21-105
kPa),
highly
(∼0.8
S/m),
but
also
can
temperature
changes
via
structure
shifts,
enables
temperature-induced
reversible
control.
Especially,
temperature-dependent
transparent-opaque
transition
kinetics
tuned
protonation
-COOH
groups
at
pH
<
pKa,
utilizing
achieve
inscribed
programmed
memory
for
information
memorizing-forgetting-recalling
based
on
a
pH-engraved
evolution
response
changes.
be
used
as
efficient
near-infrared
(NIR)
light-controlled
drug
release
carriers
realize
on-demand
release,
serve
soft
sensor
recognize
different
body
postures
movement
behaviors
high
strain
sensitivity
(gauge
factor,
GF
=
5.98),
broad
working
(5-500%),
rapid
(139
ms),
excellent
sensing
reliability
(≈1000
cycles
50%
strain).
Gels,
Год журнала:
2025,
Номер
11(4), С. 232 - 232
Опубликована: Март 23, 2025
Human–machine
interfacing
(HMI)
has
emerged
as
a
critical
technology
in
healthcare,
robotics,
and
wearable
electronics,
with
hydrogels
offering
unique
advantages
multifunctional
materials
that
seamlessly
connect
biological
systems
electronic
devices.
This
review
provides
detailed
examination
of
recent
advancements
hydrogel
design,
focusing
on
their
properties
potential
applications
HMI.
We
explore
the
key
characteristics
such
biocompatibility,
mechanical
flexibility,
responsiveness,
which
are
essential
for
effective
long-term
integration
tissues.
Additionally,
we
highlight
innovations
conductive
hydrogels,
hybrid
composite
materials,
fabrication
techniques
3D/4D
printing,
allow
customization
to
meet
demands
specific
HMI
applications.
Further,
discuss
diverse
classes
polymers
contribute
conductivity,
including
conducting,
natural,
synthetic,
polymers,
emphasizing
role
enhancing
electrical
performance
adaptability.
In
addition
material
examine
regulatory
landscape
governing
hydrogel-based
biointerfaces
applications,
addressing
considerations
clinical
translation
commercialization.
An
analysis
patent
insights
into
emerging
trends
shaping
future
technologies
human–machine
interactions.
The
also
covers
range
neural
interfaces,
soft
haptic
systems,
where
play
transformative
Thereafter,
addresses
challenges
face
issues
related
stability,
scalability,
while
perspectives
continued
evolution
technologies.
