A
double
network
structure
with
metal
ions
was
created
to
enhance
the
mechanical
stability
of
hydrogels
and
increase
their
low
conductivity.
For
this
purpose,
P(AM_AcOr_Gelatin)
hydrogel
synthesized
by
combining
gelatin,
a
biocompatible
polymer,
N-δ-acryloyl-ornithine
(AcOr),
an
amino
acid
derivative,
acrylamide
(AM).
Because
acid-based
monomer
added
charged
groups
network,
exhibited
improved
conductivity
motion
sensitivity
properties
compared
polyacrylamide
(PAM)
hydrogels.
Furthermore,
we
altered
introducing
Fe3+
Cu2+
ions,
resulting
in
formation
P(AM_AcOr_Gelatin)-Fe3+
P(AM_AcOr_Gelatin)-Cu2+
The
containing
had
coordination
bonds
between
AcOr.
Additionally,
there
were
other
noncovalent
present,
further
increased
(approximately
95%
improvement)
stretchability
(more
than
double).
resistance
changed,
depending
on
bending
position
strain
applied
layer.
results
demonstrated
that
layer
good
sensitivity,
enhanced
gauge
factor
(GF)
approximately
1.7
(at
250%
strain)
ranging
from
3355
4387
μS·cm–1.
Green Chemistry,
Год журнала:
2024,
Номер
26(9), С. 5022 - 5102
Опубликована: Янв. 1, 2024
This
tutorial
review
provides
a
comprehensive
and
authoritative
summary
on
the
exciting
research
activities
in
fields
of
poly(ionic
liquid)s
(PILs),
covering
their
synthesis
applications
number
areas.
Conductive
hydrogels
have
attracted
copious
attention
owing
to
their
grateful
performances,
such
as
similarity
biological
tissues,
compliance,
conductivity
and
biocompatibility.
A
diversity
of
conductive
been
developed
showed
versatile
potentials
in
biomedical
applications.
In
this
review,
we
highlight
the
recent
advances
hydrogels,
involving
various
types
functionalities
well
applications
fields.
Furthermore,
current
challenges
reasonable
outlook
are
also
given.
It
is
expected
that
review
will
provide
potential
guidance
for
advancement
next-generation
hydrogels.
Advances in Colloid and Interface Science,
Год журнала:
2024,
Номер
331, С. 103244 - 103244
Опубликована: Июнь 26, 2024
Ionic
liquids
(ILs)
play
a
crucial
role
in
the
design
of
novel
materials.
The
ionic
nature
ILs
provides
numerous
advantages
drug
delivery,
acting
as
green
solvent
or
active
ingredient
to
enhance
solubility,
permeability,
and
binding
efficiency
drugs.
They
could
also
function
structuring
agent
development
nano/micro
particles
for
including
micelles,
vesicles,
gels,
emulsion,
more.
This
review
summarize
IL-based
gel
structures
with
their
advanced
delivery
applications.
first
part
focuses
on
formulation
applications
delivery.
second
offers
comprehensive
overview
recent
gel.
It
aims
offer
new
perspectives
attract
more
attention
open
up
avenues
biomedical
gels.
Hydrogel-based
sensors
have
been
widely
studied
for
perceiving
the
environment.
However,
simplest
type
of
resistive
still
lacks
sensitivity
to
localized
strain
and
other
extractable
data.
Enhancing
their
expanding
functionality
perceive
multiple
stimuli
simultaneously
are
highly
beneficial
yet
require
optimal
material
design
proper
testing
methods.
Herein,
we
report
a
elastic,
sponge-like
hydrogel
its
derived
multimodal
iontronic
sensor.
By
unidirectional
freeze
casting
poly(vinyl
alcohol)
(PVA)
with
electrospun
cellulose
nanofibers
(CNF),
hierarchical
structure
aligned
PVA
channels
supported
by
interlaced
CNF
tangles
is
created.
The
ensures
both
efficient
mass
transport
good
elasticity,
enhancing
reversible
compressibility
ionic
conductivity.
Combining
this
sponge
impedance-based
measurement
methods
allows
development
capable
detecting
local
strain,
position,
object-in-contact.
Integrating
these
sensing
capabilities,
two-dimensional
small
motion
monitor,
3D
input
interface,
identification
gripper
demonstrated.
This
study
provides
simple
approach
versatile
sensors.
ACS Applied Electronic Materials,
Год журнала:
2023,
Номер
5(10), С. 5651 - 5660
Опубликована: Сен. 22, 2023
The
development
of
wearable
electronic
devices
requires
stretchable,
highly
conductive,
self-recovery,
and
ideally
environmentally
resistant
sensors.
Hydrogels
are
ideal
candidates
for
fabricating
flexible
sensors
due
to
their
stretchability
unique
ionic
conduction
pathways.
However,
the
intrinsic
incompatibility
conductive
elastic
networks
in
hydrogels
high
hydrophilicity
hydrogel
network
led
difficulties
obtaining
with
strong
mechanical
properties,
conductivity,
rapid
self-recovery
ability,
antiswelling
properties.
Based
on
single-core
multidentate
coordination
strategy,
coordinated
chitosan/poly(acrylic
acid)/Al3+
(CPAL)
were
prepared
Al3+
as
a
metal
center
amino
group
chitosan
(CS)
carboxyl
poly(acrylic
acid)
(PAA)
atoms.
obtained
exhibit
excellent
tensile
stress/strain:
1.11
±
0.04
MPa/2472.79
99.27%,
capability
(mechanical
properties
fully
recovered
10
min),
antifatigue
property,
good
conductivity
(1.09
0.02
S/m),
property.
Furthermore,
based
CPAL
demonstrated
multiplex
mode
sensing.
It
was
worth
noting
that
could
not
only
use
Morse
code
table
realize
mechanical-information
visualization
but
also
detect
human
condition
multiple
dimensions,
including
temperature,
electromyographic
(EMG),
electrocardiogram
(ECG).
In
this
work,
we
reported
strategy
provided
pathway
hydrogel-based
sensors,
showing
great
potential
devices.
